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Biodegradable multilayer implant for administering drug substances into vitreal cavity of eye Implant layers are presented in the form of congruent ellipsoids of rotation consisting of polymers and/or copolymers of glycosaminoglycans, lactic acid and polyvinylpyrrolidone; all drug-saturated layers are alternated with drug-unsaturated layers, while solubility of each implant layer is provided by hydrolysis of cross linkage and directly proportional to their number. |
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Implant for posterior pole revascularisation in patients with glaucoma Implant for the revascularisation of a posterior pole of eyeball is a porous composite of polyethylene tetraphthalate or polycarbonate track-etched membranes with the improved medical-biological properties. Improving the medical-biological properties of the track-etched membranes requires additional plasma processing of cyclohexane. |
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Adjustment and face fitting system Group of inventions refers to face protection devices. A device comprises a closed space above a specified face region having a functional portion and a face adjoining portion, which are coupled together by means of one coupling segment or a number of coupling segments. One coupling segment or at least one of the number of the coupling segments is an adjustable coupling segment, which enables adjusting the side position of the face fitting portion in relation to the functional portion in the direction parallel with the user's facial surface. |
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Method for surgical goniopuncture following non-penetrating deep sclerectomy Invention can be used for performing a goniopuncture of trabeculo-Descemet's membrane following a non-penetrating deep sclerectomy (NPDS) if observing disturbed transparency of a cornea or fluid flow of an anterior chamber. The trabeculo-Descemet's membrane is micro-perforated from an angle of the anterior chamber within a projection of a postoperative intrascleral cavity by means of a non-traumatic boomerang needle 10-0, needle bend 3/8. The needle is pricked into the cornea at 3-3.5 mm from a limb with its distal end delivered towards an opened portion of the Descemet's membrane. A needle tip is brought through the cornea and further and advanced along a trajectory aligned with its flexion; the needle tip perforates the trabeculo-Descemet's membrane. |
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Method of treating partial dacryostenosis Nasolachrymal canal is intubated with a perforated silicone tube with a hole diameter 23G; the holes are staggered at 3 or 4 mm from each other. A distal end of the tube is blocked, whereas a proximal one is fixed in a projection of semilunar fold. A medicinal gel is introduced into a tube lumen every 7 days during the whole period of intubation - up to 3 months. |
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Anaesthetising patients with chronic pain syndrome undergoing a cyclophotocoagulation surgery involves the intravenous administration of the hormonal preparation dexamethasone in a dose of no more than 8 mg followed by the anxiolytic droperidol in a dose of no more than 2.5 mg 5 minutes prior to the operation before the peribulbar anaesthesia. A peripheral block in the form of the peribulbar anaesthesia involving administration of no more than 6 ml of a local anaesthetic follows. At the moment the surgical procedure starts, benzodiazepin, e.g. diazepam, is administered in a dose of no more than 5 mg. |
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Method of treating keratoconus Method involves removing an epithelial layer, exposing a cornea by saturating it through multiple instillations of 0.1% riboflavin followed by the ultraviolet exposure. After the epithelial layer has been removed, a ring made of an ultraviolet-protected contact lens is applied on a surface of the eyeball perilimbally. An outer diameter of the ring covers the limb by no more than 2 mm, whereas an inner diameter of the ring is equal to a basic diameter of the keratoconus. The whole duration of the ultraviolet exposure involves additional instillations of riboflavin on the cornea every 3-4 minutes. The exposure is characterised by wavelength 365 nm, power 3.0 mWt/cm2 at 50 mm for 30 minutes with the ring to be removed after the exposure is completed. |
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System and methods for dynamic actuator of pneumatically operated valve Group of inventions refers to surgery. A surgical console comprises a pneumatically operated valve; the first port and the second port connected to the valve configured to feed compressed gas into each of the first port and the second port alternatively; a pressure sensor connected to the ports; and a controller connected to the valve and pressure sensor. The controller is configured to control the time of open and closed state of a valve passage in accordance with the working cycle of the valve. The time of the open state of the valve corresponds to the first port open time, whereas the time of the close state of the valve corresponds to the first port close time. The controller is also configured to receive a measured port pressure differential and to calculate the port pressure differential in accordance with the pressure sensor data, and to modify the working cycle of the valve depending on the difference of the measured or calculated pressure differential and the desired mean pressure differential for reducing a difference of these values. What is disclosed is a method for the valve adjustment. |
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Method of surgical treatment of congenital glaucoma Conjunctival flap is formed. Surface sclera and deep triangular flaps are formed with base to limbus with exposure of ciliary body. 2 scleral channels are formed on each side of triangular flap, perpendicular to them. External end of sclera channels must project beyond bed of surface sclera flap. Two collagen drainages "xenoplast" 0.8-1.2 mm thick, 1.0-1.5 mm wide, 4.0-5.0 mm long, are sutured to formed sclera bed. Length of collagen drainages must not exceed length of sclera flap. Anterior eye chamber is opened by cut along limbus. Iridectomy is performed. Anterior chamber is fully filled with viscoelastic. Ends of two drainages are introduced into anterior chamber, with formation of window in trabeculo-Descemet's membrane. Root of iris must not overlap ends of drainages. Surface sclera flap is laid into place and fixed with sutures. |
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Method of treating amblyopia in children Invention refers to medicine, particularly to ophthalmology, and can be used in treating amblyopia in children. One 10-minute procedure involves alternating 1-2-minute exposure to green-range laser speckle structures at wavelength 0.5-0.65 mcm and red-range laser speckle structures at wavelength 0.63-0.7 mcm. Laser fluence is (4-8)×10-5 W/cm2. That is combined with autoscan exposure to a travelling magnetic field from temporal lobes to an occipital region by bitemporal method at a scan frequency of 90-180 Hz. A field density is 30-45 mT. The procedures are daily for 10 days. |
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Method of removing silicone oil from anterior eye chamber on eyes with silicone oil tamponade Invention relates to medicine, namely to ophthalmology, and can be used for the removal of silicone oil from the anterior eye chamber. 2 paracenteses are performed. An irrigation cannula of the phacoemulsifier is introduced into one of the paracenteses. Supply of physiological solution is realised. Removal of silicone takes place passively (by gravity) through the second paracentesis. |
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Invention relates to medicine, namely to ophthalmology, and can be used for the treatment of a primary open-angle cataract at the background of pseudoexfoliation syndrome in a combination with the cataract. Normalisation of the intra-ocular pressure is carried out by the instillation of b-adrenoblockers and/or carboanhydrase inhibitors. Selective laser trabeculoplasty is performed. Phacoemulsification of the cataract with the implantation of an intraocular lens is performed to the patient the following day after exposure to laser. In the course of performing the phacoemulsification of the cataract washing out pseudoexfoliative particles and pigment granules from the angle of the anterior eye chamber is realised. |
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Method of creating lachrymal passage in children with simultaneous installation of lacoprosthesis Simultaneous formation of tunnel and installation of lacoprosthesis are carried out. For this purpose disposable intravenous catheter of 20G calibre with guide needle inside, preliminarily modernised, namely by cutting off vanes case, is used. Remaining flexible catheter in form of cylindrical tube is used as lacoprosthesis with placement of guide needle inside it and providing 1.5-2.0 mm protrusion of needle beyond distal end of lacoprosthesis during work. Tunnel formation is realised by puncturing soft tissues with guide needle with access to lachrymal bone. After that, lachrymal bone is punctured under endoscopic endonasal control with further movement of needle with lacoprosthesis into nasal cavity. After that, guide needle is brought out, lacoprosthesis is lowered into common nasal meatus until proximal end of lacoprosthesis, formed in form of "hat" is installed into zone of internal angle of optic fissure. |
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Intraocular pressure regulation Invention refers to medicine, particularly to ophthalmic surgery and concerns intraoperative intraocular pressure regulation (IPR). That is ensured by using a microsurgical system comprising a surgical cartridge, a surgical unit and a computer. The cartridge comprises an infusion chamber containing an irrigation fluid. The pressure is generated and maintained in the microsurgical system by a pressure generator hydraulically connected to the above surgical cartridge and comprising a compressed gas source. The device also comprises an electromagnetic proportional valve and a gas line hydraulically connecting the compressed gas source, proportional valve and surgical cartridge. The surgical unit gets hydraulically connected to the surgical cartridge by an infusion fluid line. The required IPR is specified. The pressure is maintained in the above infusion chamber by gas pressure-fed from the above compressed gas source into the surgical cartridge. The irrigation fluid is supplied into the surgical unit in the infusion fluid line. The irrigation fluid flow is measured in the infusion fluid line; a signal corresponding to the measured irrigation fluid flow is injected into the computer. The estimate IOP is calculated in the computer in response to the received signal. The computer is used to regulate compressed gas pressure by injecting the second signal from the computer onto the proportional valve to maintain the estimate IOP equal to the required IOP. |
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Ophthalmic troacar valve cannula Invention refers to medicine. A cannula is attached to an overcap to prevent the overcap turn about the cannula. The cap has a seal. The seal can be formed in the overcap or comprise a plate fixed between the cannula and overcap. The cannula and overcap can latch permanently together by tenoning so that the cannula and overcap cannot be separated without damaging the cannula or overcap. The cannula can be inserted into the seal slot to provide the fluid outflow from the eye cavity through the cannula. The cannula can contain a twisted portion for friction engagement of a drain canal. |
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Mg komarova's procedure for glaucoma management in different crystalline lens conditions Patient suffering glaucoma is examined. Conditions of an angle of an anterior chamber (AAC) and a crystalline lens are assessed. If a total opening of the AAC and the presence of the native crystalline lens (V0 glaucoma) have been detected, a single-stage phacoemulsification with an intraocular lens (IOL) implantation combined with a non-penetrating deep sclerectomy (NDSE) is performed. If the examination shows the total opening of the AAC in the presence of pseudophakia (V1 glaucoma) or double "piggyback" IOLs (V11 glaucoma), a micro by-passing is performed. If the detected total opening of the AAC is combined with the presence of the phakic IOLs (V10 glaucoma), the phakic IOL removal, the PE with the IOL implantation, and the NDSE are performed within the single-stage intervention. If observing a partial opening of the AAC and the presence of the native crystalline lens (Y0 glaucoma), the PE with the IOL implantation is performed. If the patient has the partial opening of the AAC accompanied by complicated pseudophakia (Y1 glaucoma) or complicated "piggyback" pseudophakia (Y11 glaucoma), the intervention involves a reparative surgery and the above NDSE. The partial opening of the AAC combined with the phakic IOL (Y10 glaucoma) requires the single-stage phakic IOL removal, PE with the IOL implantation. |
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Diagnostic technique and method of therapy of drug-induced dry eye syndrome Invention aims at treating drug-induced dry eye syndrome (DI-DES). Treating DI-DES implies taking the past medical history, measuring tear production and eye xerosis values reduced and increased respectively in relation to the norm. Unpreserved ocular hypotensive medications are prescribed in the patient. Unpreserved artificial tears are also applied. The lachrymal fluid is analysed by a multicytokine technique. If the analysis shows increased concentrations of proinflammatory cytokines - interleukin-6, interleukin-8, interleukin-12, Th-1 - interleukin-2, interferon-gamma, and Th-2 - interleukin-4, by min 30% in relation to the patient's age norm, a chronic immune ocular inflammation is detected. That requires transpalpebral Blepharogel-1 phonophoresis and 1% hydrocortisone ointment phonophoresis on the sub-mastoidal region from both sides; the therapeutic course is 8-10 daily procedures. |
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Method of testing laser device Disclosed is a method of testing a laser device, designed for carrying out eye operations. The laser device is fitted with a contact element which is transparent for laser radiation and has a mating surface for bringing into close contact with the eye to be treated. When carrying out the testing method, a test object is placed on the mating surface, said test object being transparent for laser radiation at least in a region corresponding to the treatment region of said object. Laser radiation is then transmitted into the test object resting on the mating surface while simultaneously changing the focus position according to a given test pattern in order to form visible structures in the test object. |
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Method of microinvasive non-penetrating deep sclerectomy at open angle glaucoma Conjunctival 2 mm long is cut made parallel to limb at 4 mm distance from it. Surface trapezoidal flap is cut out with large 3 mm basis near limb and with smaller 2 mm basis and height 4 mm is cut out from side of eye equator. Deep layers of sclera are excised together with peripheral layers of cornea and external wall of Schlemm's canal with exposure of zone of trabecula and Descemet's membrane. Straps of sclera are removed from lateral sides of surface flap near its basis with length 2 mm and width 0.3 mm. Two 2 mm long cuts are made in direction to limb from side of apex of truncated surface scleral flap, separating truncated surface scleral flap into three equal straps. Medium scleral strap is tucked under remaining part of truncated surface scleral flap in direction to its basis and sutured to it by interrupted suture from internal side, after which laying of truncated surface scleral flap on its place is carried out without application of suture. |
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Vitreous body (VB) is removed after three ports, PCL [posterior cortical layer] of VB is excised, perfluorogranic compound (PFOC) is introduced, endolasercoagulation of retina and change of PFOC for silicon oil are carried out. Ablation of VB is started from its periphery near eyeball wall, in area of VB base and continued on the entire area of VB base. Ablation of cortical layers is started from periphery of eyeball and continued towards central retina parts. |
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Invention is intended for correction of post-operative mild-degree hypermetropia after phacoemulsification (PE) or laser extraction (LE) of cataract with implantation of intraocular lens (IOL) with inaccuracy of calculation of intraocular lens power. After drop anaesthesia disperse-cohesive viscoelastic is introduced into front eye chamber. 180 degree turn of IOL inside capsular bag is realised in such a way, that back convex surface of IOL, contacting before with back capsule of crystalline lens, contacts with front capsule. Viscoelastic is removed, after finishing correction anti-inflammatory drops and drops with antibiotic are instilled. |
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Retinal derivatives and methods of thereof application for treatment of vision impairment Invention relates to pharmaceutical compositions, in particular to pharmaceutical composition, recovering visual pigment in case of insufficiency of endogenic 11-cis-retinal, which contains effective quantity of retinal derivatives and pharmaceutically acceptable carrier, where retinal derivative is converted into retinal, capable of forming functional complex opsin/retinal, where retinal derivative represents ester of 9-cis-retinyl of formula |
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Method of surgical treatment of upper eyelid ptosis with absence of levator function in children Preliminary marking in the area of the eyelid and forehead is performed. Skin minicuts are made in accordance with the marking: two cuts in the area of the eyelid and two cuts in the superciliary area, one cut in the central zone of the forehead. Tunnels are successively formed through the cuts with the simultaneous passing of a suspending material. A disposable needle 18G is used for spinal anaesthesia. Formation of the tunnels and passing of the suspending material are carried out under the orbicular muscle on the anterior surface of the tarsal plate and further along the levator. Ends of the suspending material are brought into the cut on the forehead skin. The upper eyelid is pulled to place its edge on the upper limbus. After that the ends of the suspending material are fixed to the frontal muscle. A polypropylene thread is used as the suspending material. |
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Method involves a vitrectomy, a detachment and a removal of a posterior hyaloids of a vitreous body, and a retinal laser endocoagulation. After transparency of the vitreal cavity structures is recovered, a fluorescein angiography (FAG) is performed. If the FAG findings enable visualising hyperfluorescence close to a vascular arcade and a macular area, the retinal laser endocoagulation is performed in this area at wave length 532 nm, pulse length 0.1 s, spot diameter 100 mcm, power 70-100 mWt, in a number of 100-200 coagulates. If the hyperfluorescence is found to be outside the vascular arcades, then the retinal laser endocoagulation is performed in this area at wave length 532 nm, pulse length 0.2 s, spot diameter 200-400 mcm, power 150-250 mWt, in a number of 400-500 coagulates. |
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Method of combined laser treatment of primary narrow angle glaucoma Method includes carrying out selective laser trabeculopasty Nd-YAG by laser radiation. The radiation with a wavelength of 532 nm is used. The diameter of laser applicate spot is 400 mcm, they are applied on the circumference of 180 degrees at an equal distance from each other, focusing the laser ray on the zone of the trabecula. Laser iridectomy is preliminarily performed by Nd-YAG-laser with a wavelength of 1064 nm, power of 1.5-2.5 mJ, the number of pulses is 1-4. Selective laser trabeculoplasty is carried out with the power of 0.7-1.2 mJ, the number of pulses is 50-60. |
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Method for hybrid phacoemulsification in narrow rigid pupil and iris-lens synechias Nucleus of lens is fragmented completely by femtosecond laser light at power 7,000-8,500 nJ; that is followed by making a corneal flap incision, dilating the pupil mechanically, and separating the synechias. A continuous circular capsulorhexis is performed, and the fragmented crystalline substance is emulsified. If observing degree II nuclear density, the nucleus is fragmented on 8 segments, while degrees III and IV requires fragmenting the nucleus on 8 segments in a combination with the circular incision in the centre 3 mm in diameter. |
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Device for operation with microsurgical injectors Invention relates to field of medicine. Device for operation with microsurgical injectors consists of two horizontal plates, connected by means of vertical plates. Holes in upper horizontal plate are made vertically through with digital marking of each hole, showing size of microparticles and depth of their introduction into microwound. Cylindrical hollows, vertically coaxial to holes in upper horizontal plate are made in lower horizontal plate. Vertical rods, made with possibility of vertical rigid fixation of microparticles, introduced into microsurgical injector to specified level by pusher of microsurgical injector, are installed on the bottom of cylindrical hollows in the centre. |
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Method for surgical management of clinical outcome of retinal venous thrombosis Method involves performing a vitrectomy with removing a posterior hyaloids of a vitreous body, and a laser retinal endocoagulation at wave length 532 nm, emitting power 120-200 mWt, pulse length 0.1-0.2 s, spot diameter 150-200 mcm. A chorioretinal venous anastomosis (CRVA) is induced by exposing the branches of the central vein of the retina to the third-order laser light at wave length 532 nm in a number of 4 coagulated, emitting power 500 mWt, pulse length 1 sec and spot diameter 50 mcm. The vitrectomy is preceded by the intramuscular injections of 12.5% etamylate 4ml and the intravenous administration of 0.5% tranexamic acid 1 g 25-30 minutes before. That is followed by the droplet intravenous administration of an infusion solution containing 0.1% perlinganit 10 ml in 0.9% normal saline 100 ml at an initial rate of 5 mcg/min. The area to be exposed to laser is specified at least in 3 diameters of the disk from the optic disk. The third-order laser applications are applied on the branches of the central vein of the retina in a number from 2 to 4 at wave length 532 nm, emitting power 300-400 mWt, exposure 0.5 s, spot diameter 500 mcm in two points in the proximal and distal direction from the CRVA induction point. Immediately before the CRVA induction, a salt-water infusion flow is increased until the central retinal artery starts pulsating. The surgical management is completed by plugging the vitreal cavity with 20% air-gas mixture SF6. |
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Method for surgical correction of compound irregular hypermetropic corneal astigmatism Eye cornea is exposed to excimer laser at wave length 193-222 nm. A pulse energy is 0.8-2.1 mJ; a laser spot diameter is 0.5-1.5 mm; a pulse length is 5-8 ns; a pulse repetition rate is 30-500 Hz. A regular surface and a transient surface are formed in an optical area by a sequential removal of the corneal segments in layers. The regular surface of the optical area (OA) is formed as a dome-shaped ellipsoid of rotation with a negative conical constant from minus 0.1 to minus 0.4. An optical axis of the ellipsoid is displaced so that the OA centre is aligned with the position of the centre of a maximum irregularity on an anterior segment analysis. The OA diameter is specified in accordance with a diameter of the maximum irregularity segment determined by a height map on the anterior segment analysis. A transient area surface (TAS) is formed in the form of a portion of the dome-shaped outer surface (DSOS) of a toroidal ring. An outer edge of the TAS is coupled with an unexposed corneal segment. An inner edge of the TAS is coupled with an outer edge of an optical surface. A TAS width makes 0.04-0.2 from an exposure diameter. |
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Method for retrobulbar anaesthesia in oncological eye diseases with use of b-ray applicator Catheter is inserted into the retrobulbar space and used to introduce 2% lidocaine 1 ml and 0.5% marcaine 1 ml 15-20 minutes before applicator anchoring. The catheter is left in the retrobulbar space for 1-7 days. 10-15 minutes before removing the applicator, 2% lidocaine 0.5-1 ml and 0.5% marcaine 0.5-1 ml are introduced through the catheter. 4-6 hours after anchoring and removing the applicator, 2% lidocaine 1 ml and 0.5% marcaine 1 ml are introduced respectively additionally. |
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Method for hypermature cataract phacoemulsification Anterior capsulotomy is performed by exposing to femtosecond laser light at pulse strength 6,200-6,500 nanojoules, 4.5-5.0 mm in diameter. The fragmentation is preceded by forming a canal of 1.8-2.2 mm in diameter and 90-95% deep from the lens depth. The nucleus of lens is fragmented as small as possible from the centre to the periphery. |
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Method for evaluating sharpness of ophthalmic cutting instrument Swine isolated post-mortem eye is fixed in a titanium eye holder; a normal ophthalmotonous pressure is simulated by varying a degree of eye gripping with eye holder petals. A test cutting instrument is placed into an opening of a platform mounted above the eye holder that is preceded by mounting a weight piece pad onto the top of a cutting instrument holder; a cutting instrument blade is aligned with an eye cornea. The weight pieces are placed onto the pad by gradually increasing their total weight. When the blade is exposed to a force exceeding a corneal resistant force, it cuts out. Total weight of the weight pieces, cut and pad is determined to measure a penetration force. |
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Diffraction structure with phase shift of centre and far zone for ocular implant Group of inventions refers to medicine. An ocular implant comprises: a diffraction multifocal intraocular lens (IOL implant) configured to provide long-range, short-range and medium-range foci; a set of haptic elements coupled with the diffraction multifocal IOL implant and configured to localise the diffraction multifocal IOL implant inside the eye. The diffraction multifocal IOL implant has a thin edge making it possible to make the incision smaller. The diffraction multifocal IOL implant comprises a bifocal diffraction zone only providing the long-range and short-range foci, a refraction zone of centre and far zone, and an outer refraction zone. A phase of the outer refraction zone matches with a phase of a bifocal diffraction zone, and a phase of the refraction zone of centre and far zone is phase-shifted from the bifocal diffraction zone within 1/8 to 1/16 of the wavelength to shift the phase of light energy so that the constructive interference between the refraction zone of the centre and far zone and the bifocal diffraction zone occurs in the long-range focus, and in the medium-range focus. A method for correcting visual deterioration in aphakia contains the stages: removing a natural crystalline lens; inserting the diffraction multifocal intraocular lens; arranging and fixing the diffraction multifocal IOL implant inside the eye by means of the set of haptic elements coupled with the diffraction multifocal IOL implant. |
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Optical system for ophthalmic surgical laser Group of inventions relates to medicine. A laser system for ophthalmic surgery, comprising: laser radiation source for generating a pulsed laser beam, an XY scanner for receiving the pulsed laser beam and for emitting an XY scanning beam in two directions across the Z axis, a Z scanner for receiving the XY scanning laser beam and for emitting an XYZ scanning beam additionally across the Z axis, wherein the Z scanner comprises a first group of lenses for emitting a beam having an intermediate focal plane and a group of movable lens for receiving the beam through the intermediate focal plane and for collimating the beam in a variable manner, and an objective lens for receiving the collimated beam from the Z scanner and for focusing the beam into a focal spot in a target region. |
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Invention refers to medicine. An irrigation device comprises a body in the form of a hollow open-ended envelope. The hollow open-ended envelope is shaped as an ellipsoid symmetrical to a long axis of symmetry. A flat-end part of the hollow envelope is open-ended, and its edges are incurved inside the envelope. The hollow open-ended envelope comprises a perforated ellipsoid connected by an irrigation tube to an irrigation fluid source. The hollow open-ended envelope is connected to a surface of the perforated ellipsoid by three supports mounted perpendicularly to the hollow open-ended envelope, while one of side surfaces of the hollow open-ended envelope has holes formed in an upper side sector of the surface. |
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Method for keratoprosthesis of burn and vascular leukomas (versions) According to the first version of the method, a blind-ended corneal incision is made of two thirds of its thickness. The leukoma is layered along its entire area to form lower and upper flaps. A through hole is cut out in the leukoma with a 3 mm bone trephine. The formed upper leukoma flap is turned away. Three pockets is cut out within the limb in the position of 12, 5 and 7 o'clock in line with a diameter of three arched elastic fixing members of the keratoprosthesis. The keratoprosthesis is laid on the lower leukoma flap. The elastic fixing elements are tucked into the formed limb pockets. The upper leukoma flap with the through hole is laid on an optical cylinder of the keratoprosthesis. The upper leukoma flap is fixed with separate interrupted polypropylene sutures 10.0. According to the second version of the method, a donor's blind-ended corneal incision is made of two thirds of its thickness. It is layered along its entire surface to form lower and upper flaps. A corneal trepanation area is marked with an 8 mm bone trephine. A hole is created in the centre of the cornea in the upper layered flap with the 3 mm bone trephine. The donor's corneal graft is cut out 8 mm in diameter. The lower flap is removed. The upper surface of the keratoprosthesis with three arched elastic fixing elements is covered with the upper donor's corneal flap. They are fixed with three interrupted polypropylene sutures 10.0. A keratoprosthesis and cornea complex is formed. The patient's leukoma trepanation area is marked with the 8 mm bone trephine. The patient's upper leukoma flap is cut out with the 8mm bone trephine. The upper flap is removed. Three pockets is cut out within the patient's limb in the position of 12, 5 and 7 o'clock in line with the diameter of the arched elastic fixing members of the keratoprosthesis. A hole is created in the patient's lower leukoma flap with the 3 mm bone trephine. The keratoprosthesis and cornea complex is laid with its lower surface facing the patient's lower leukoma flap. The optical cylinder of the keratoprosthesis is inserted into the hole of the patient's lower leukoma flap. The keratoprosthesis and cornea complex sutures are removed. The elastic fixing elements are tucked into the formed limb pockets in the position of 12, 5 and 7 o'clock. The keratoprosthesis and cornea complex and the patient's lower leukoma flap are fixed with separate interrupted polypropylene sutures 10.0. |
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Method for laser treatment of active retinopathy in premature newborns Method involves transpupillary pattern-mode laser coagulation of retina at emission wave length 577 nm. Threshold stages of retinopathy of prematurity (ROP) with extra-retinal proliferation expanding over 5 successive, circumferentially adjoining hour meridian require applying 300 and more laser coagulates on the avascular retina from an axle to the periphery within the pathological process. If observing the post-threshold stages of ROP accompanied by local retinal detachemtn on the periphery of 2-3 hour meridians, 300 or more coagulates in the form of matrix patterns 5×5 are applied on the avascular sites. Then, the coagulates in the form of matrix patterns 3×3 are applied on the avascularised site of the retina at 1-1.5 diameters of optic disk from the detachment point. |
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Method of intraocular correction of fixation point displacement in case of macular region pathology Invention relates to ophthalmic surgery and can be applied for the intraocular correction of the fixation point displacement in case of the macular region pathology. An intraocular lens (IOL), in the optic part zone of which applied are prisms without spaces in such a way that a light ray, falling perpendicular to the lens surface, falls on the optic surface of the prism and changes its course perpendicular to the surface with the gradation of distribution from 5 to 10 degrees from the foveola, in addition IOL is provided with a mark, determining the direction of refracted rays, with the angle of the light flow deviation being determined at the pre-operation stage by data of microperimetry, IOL position is determined by the mark depending on the direction of the light flow projection, and selection of IOL with a required angle of deviation is realised at the pre-operation stage by the data of microperimetry. |
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Lower lachrymal point is expanded. A probe is projected along a lower lachrymal duct all the way to the bone. A light guide is delivered through the expanded lower lachrymal duct all the way to the bone and fixed manually. A nasal cavity is visualised with an endoscope. Bone tissue of a lateral wall of the nasal cavity is burned through with endoscopically controlled laser light until the laser light appears in the nasal cavity. That implies using a diode laser at wave length 970 nm, emission power 6-7 Wt, in the continuous mode. An endoscopically controlled drain tube is inserted into the formed fistula through the nasal cavity by means of a plastic injector 10.01 mm long, 2 mm in diameter. The drain tube is 8.4 mm long. An external diameter of the cylindrical portion is 3 mm, whereas an internal diameter is 2 mm with the length of 6 mm. For the purpose of fixation in the lachrymal sac, an implanted end of the drain tube has deformable fletching elements 5 mm in diameter, 1 mm wide from each side, and 3.2-3.5 mm in flexion diameter. At the opposite side of the drain tube, there is a pad 5 mm in diameter fixed in the nasal cavity. Along the entire drain tube, there are grooves 0.25 mm wide, 8-8.1 mm long for additional outflow of the lachrymal fluid. |
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Instrument for measuring distances between keratotomic scars and corneal tunnel edges in cataract phacoemulsification in the patients suffered a radial keratotomy is made of stainless steel and contains a graduated scale. It also contains a plate in the form of a sphere sector 1.8-2.4 mm wide and 8.0 mm long, 0.3 mm thick, with a curvature radius of 8.0 mm having a matt surface provided with a holder attached at 100° to the plate plane. The graduated scale is provided on the inner edge of the plate facing the corneal centre and graduated at a pitch of 0.25 mm. In the centre of the graduated scale, there is a sector 1.8-2.4 mm wide limited by two graduations. |
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Device and method for material processing by focused electromagnetic radiation Group of inventions refers to medicine. A device for material processing by focused electromagnetic radiation comprises: an electromagnetic radiation source; optical components directing and focusing the radiation on or to the material; a unit for a pattern generation in an electromagnetic radiation beam; a partially reflecting surface mounted on a beam path in front of the focus of the focused radiation to project the above pattern thereon by at least a portion of the above optical components; at least one detector configured to receive the pattern image reflected by the above surface and to generate electrical signals corresponding to the above image, which comprises a focus position data; a computer configured to receive the above electrical signals and programmed to process the above image and to generate the electrical signal dependent on the focal position. The computer is configured to determine the image sizes as a spread variation function during the generation of the above electrical signal. Besides, the device additionally comprises a spread control element mounted on the beam path and configured to receive the above electrical signal generated by the computer, and to change the electromagnetic radiation spread according to the above signal. |
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Method of treating recurring pterygium of large sizes based on autoplasty Invention relates to medicine, namely to ophthalmology, and can be applied for treating recurring pterygium of large sizes based on autoplasty. Obtained technical result consists in reduction of defect size of bulbar conjunctiva, which provides possibility of effective treatment of recurring pterygium of large sizes based on autoplasty due to selection of required size of transplant, capable of covering conjunctival defect, obtained after dissection of pterygium body and head. After excision of pterygium body and separation of pterygium head bulbar conjunctiva in zone of pterygium excision on defect edge is sutured with blanket suture, after which thread is tightened, with formation of considerably smaller in size bulbar conjunctiva defect. From lower-external part of conjunctival fornix donor tissue for transplant formation is cut out. As donor tissue section of conjunctiva is applied. Size of transplant is calculated taking into account size of obtained conjunctival defect. Transplant is placed on sclera in place of pterygium body excision and fixed with uninterrupted suture to own bulbar conjunctiva. |
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Fistula is packed with the eye self-tissue. The Tenon's membrane is used as a packing tissue. The Tenon's membrane is taken from the fornix by excising the fragment. The fragment diameter exceeds the fistula diameter. The excised fragment is inserted from the outer side into the fistula. The fragment is sutured to the sclera. |
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Method involves opening and separating a conjunctiva, a sclera and a Tenon's space, crossing oculomotor rectus and oblique muscles, performing neurotomy, removing an eyeball, placing an implant or a prosthesis. The conjunctiva and Tenon's space are separated from the sclera by blunt dissection up to an attachment point of the oculomotor muscles, which are gripped at a tendon and crossed at the sclera. The oculomotor muscles are left in a tendon bed in a Tenon's sac. |
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Method of performing corneoscleral tunnel cut in cataract facoemulsification Performing a corneoscleral tunnel cut includes the cut with the diamond knife within the limits of the transparent cornea. The cut length is determined depending on the diameter of an intraocular lens planned for implantation. The cut is made on the tangent to the limbus without the separation of the conjunctiva and with the placement of the tunnel on 2/3 in the cornea and 1/3 in the sclera under the conjunctiva. In such a way the corneoscleral tunnel is formed in the form of a rectangle with the width of 2.5 mm and the depth of 2.0 mm. The extension of the tunnel cut is performed towards the subconjunctival edge. In performing the cut sutures are not applied. |
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Method of treating early manifestations of age-related macular retinal degeneration Transcranial influence by a travelling pulse magnetic field with the induction of 35 mT, inversion frequency from 1 to 16 Hz, reversion time of 1 minute, is carried out. Then the eye is exposed to laser radiation with a wavelength of 0.633 mcm, in a mode of continuous radiation with the outlet power of 2.4 mW. On the first day the exposure to the magnetic field lasts 5 minutes, to the laser radiation - 1 minute. On the second day the exposure lasts 6 and 2 minutes, respectively. On the third day it lasts 7 and 3 minutes, respectively. From 4 to 10 day the exposure lasts 8 and 4 minutes, respectively. The influence is realised on each eye alternately. |
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Invention refers to medicine, namely to ophthalmology, and can be used for assessing the effectiveness of pigment granule photothermolysis in trabecular membrane cells following laser trabeculoplasty. A method consists in detecting trabecular membrane pigmentation at least one month following the laser trabeculoplasty. A colorimetric analysis is used for the process of detection. That is ensured by performing a single photorecording of the trabecular membrane at 10x to 40x magnification. Both laser exposed and non-exposed sites are photorecorded. That is followed by evaluating the colorimetric analysis results R, G, B of these sites in Paint drawing editor to be compared. Pigmentation intensity variations of the trabecular membrane are evaluated. |
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Invention relates to medicine, namely to ophthalmological surgery, and can be applied at the microinvasive surgical treatment of recurrence of retinal detachment in the lower segment in the process vitreous cavity tamponade with silicon oil (SO) 1300 est. For this purpose a sutureless transconjunctival access into the vitreous cavity is carried out. The vitreous cavity is visualised with the evaluation of a character of retinal detachment. Then, a solution of triamcenolon acetonide is introduced for contrasting the epiretinal membranes and the vitreous body remains. The vitreous cavity is filled with air. Diathermocoagulation partial lower retinotomy are performed. The subretinal liquid is aspirated. Endolasercoagulation of the retina is carried out. The vitreous cavity is tamponed. In case of the presence of local fibrosis and spread of proliferative vitreoretinopathy (PVR) on 1-2 quadrants a 20% gas-air mixture SF6 or C4F8 is applied. In case of the presence of expressed epiretinal and subretinal fibrosis, cystic changes of the retina and spread of PVR on 3-4 quadrants for re-tamponade FSO is applied. |
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Ciliary body thickness of an operated eye is measured by ultrasonic biomicroscopy. Maximum permissible Emax and minimum sufficient Emin total energy of the laser exposure is determined by formula: wherein N is the ciliary body thickness of the operated eye. wherein N is the ciliary body thickness of the operated eye, N1=0.2574*N+0.2332. |
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Method for performing minimally invasive deep sclerectomy Conjunctival incision is made. A surface scleral flap is formed. A deep scleral flap is formed, and a ciliary body is exposed at its apex. The deep scleral flap is excised. The surface scleral flap is placed back. A hydrogel drain tube 2×3 is placed under the surface scleral flap into the formed intrascleral cavity backwards the scleral spur in parallel with the limb to fill the intrascleral bed. A distal end of the drain tube is immersed into a scleral coloboma between the ciliary body and sclera. The scleral flap is fixed with one interrupted suture in the centre. That is followed by making a corneal 3-o'clock paracentesis, which is used to fill an anterior chamber with RROVISK viscoelastic 0.2 ml by means of a cannula. Healaflow drainage implant 0.1-0.2 ml is administered by means of the cannula into the subconjunctival space. The conjunctival incision is sealed with uninterrupted suture. |
Another patent 2551001.