SU1599003A1 - Method of correction of myopia - Google Patents

Abstract

The invention relates to medicine, namely to ophthalmology. The aim of the invention is to increase the refractive effect. This goal is achieved by continuing corneal incisions in the retrorolimbal zone under the limbus to the sclera. 2 Il.

Description

The invention relates to medicine, namely to ophthalmology, and can be used in the surgical correction of myopia of medium and high degrees.

The aim of the invention is to increase the refractive effect.

FIG. 1 shows the scheme of the operation; in fig. 2 shows an apparatus for carrying out the method.

The proposed method is carried out as follows (Fig. 1).

After the cornea 1 has been laid out according to the conventional method, a micrometric knife with a depth of 80% of the cornea thickness produces non-perforating radial incisions of 2 corneas from the limbus to the central optical zone. The micro-expander expands the edges of the notch 2 and installs the working part of the device at the bottom of the notch in the limb area (Fig. 2), with the front face edge 3 of the three-sided surface 4 of the working part 5 facing the limbal zone. The micro expander is removed from the notch. Advance the working part of the device into the retroliminal region, divide the deep layers of the cornea and continue to cut the cornea to 1.5 mm below limb 6 to the sclera 7. Similarly, cuts are made in all marked directions. This takes into account the need to further reduce the strong cornea axis to eliminate myopic astigmatism.

The implementation of the operation with the proposed method allows to increase the effect while maintaining a given number of incisions by overcoming the incision line in the retrorolimbal region to the sclera. It should be noted that it is possible to reduce the injury to the cornea by reducing the number of cuts.

At the same time, it is possible, without prejudice to the effect of the operation, to increase the diameter of the central optical zone by 0.5-1.0 mm, which is 15-30% of the minimum diameter of the central optical zone, taken 3.0 mm.

Example 1. Patient 26 years old, diagnosis: non-progressive myopia in both eyes. The examination revealed: visual acuity of the right eye 0.01–4.75 1.0, visual acuity of the left eye 0.01–5, O 1.0, ophthalmometer of the right eye 0 ° –46.2; 91 ° 7- -46.75, ophthalmometer of the left eye O ° -46.25; 93 ° -47.0. The diameter of the cornea of both eyes vertically and horizontally 10.7 mm.

(ABOUT

SP CO CD

WITH

An operation was performed - anterior radially dosed keratotomy on the right eye. The central optical zone is marked 3.2 mm, 10 radial

ration period without complications. When viewed through 3 months visual acuity of the right and left eyes 1,0. Ophthalmometer of the right eye 0 ° -41.0; 90 ° -41.5.

  on 1OK.

JjnniUJtiDV / iv .i ".--- -, -, J1OC

™ I P; 7p eG — from the periphery to the center, OF –TogovGnyG Type e:

depth of 625 microns. At the periphery in the ret-

the rolymbal zone, the incision is extended by 15 mm P Jf vessels in incision 5 "™ 7 o" g-; ogg.yy, -:, -g {-. - g ..- n: - ch: dg; and Etbr gTeG- s

without features. Visual acuity of 0.6 without d,% 5 -20. Ophthalmometer

left eye. Surgery and postoperative diameter of both cornea centers

ny period - without complications. After 1 month, the visual acuity of the right eye was 1.0, the left eye was 1.0. After 3 months visual acuity

both eyes 1.0. D1 n

Ophthalmometer: right eye O -41, and, 90 ° -42.25; left eye 0 ° -41.5; 90 -41.75.

Scarring according to the first type. Limb area without features. The ingrowth of retinal vascular vessels ... ". P ....... ..

no cornea observed. "," 25 notches added incision extension

Example 2. A 25-year-old patient who had been examined and was diagnosed with axes 93 and 183 ° was right for moderate myopia, DO and 180 ° for the left eye. non-progressive; on both of them Ostro- ““ “Jf De after 2.5 months, the sharpness of the view of the right, 03-5.0-2.0. РР о, 9-1.0. Ophthalmometer

Visual acuity of the left eye is 0.02-5.5-1.0. nor 2 ° -38.5; 95 ° -39.0. Ophthal e ™ e: r oTLb: ;; ri o o-f. S - / cm „Р„ „.„

Gr7-. th b. j -: - o "t s.i.7oarjp .-,

corneas of both eyes vertically and horizontally - 35 "/". after operative astigmatism

/ D, And, ats1 .A. . . f- horizontal 11.2 mm. Corneal thickness at fixed points: 575/560, 617/628,

720/718 microns.

An operation was performed — anteriorly metered radial keratotomy in both eyes. The number of cuts 12. The depth of the cut in both eyes is 80% of the thickness. Delaminations were made, cuts were extended in the retrolimbal region through

, ,, .. r-ir xnnAiltTIA4: 1G Oil AW

the umbrella is 11.0 mm.

Surgery: anterior metered radial keratotomy on the right eye. The number of cuts 10. Cuts made at 80% of the thickness of the cornea. The retrolimbalnum area is deepened in 5 notches of 1.5 mm. The operation and the postoperative period are without complications. After 1 week, visual acuity of the right eye 0.9-1.0 without correction. Corneal cuts are clean, limb area without features.

Operation: Anterior metered radial keratotomy using the same procedure on the left eye. Operations and postoperallUoi5UJln .d lH DUlV-rii and.-F vy

reduce postoperative astigmatism by 1.0-1.5 while reducing trauma and expansion of the central optical zone.

Claims (1)

Invention Formula A method of correcting myopia, which consists in making radial non-perforated incisions of the cornea, characterized in that, in order to increase the refractive effect, the incisions are continued in the retrolibal zone under the limbus to the sclera. ration period without complications. When viewed through 3 months visual acuity of the right and left eyes 1,0. Ophthalmometer of the right eye 0 ° -41.0; 90 ° -41.5.   on 1OK. JjnniUJtiDV / iv .i ".--- -, -, J1OC  OF- TogovGnyG Ty e:  The diameter of both horn marks  retrilmi ... ". p ....... ..   notch added notch extension / D, And, ats1 .A. . . f- horizontal 11.2 mm. Corneal thickness at fixed points: 575/560, 617/628, 720/718 microns. An operation was performed — anteriorly metered radial keratotomy in both eyes. The number of cuts 12. The depth of the cut in both eyes is 80% of the thickness. Delaminations were made, cuts were extended in the retrolimbal region through , ,, .. r-ir xnnAiltTIA4: 1G Oil AW th b. .-,  "/„. After operative astigmatism llUoi5UJln.d lH DUlV-rii and.-f vy reduce postoperative astigmatism by 1.0-1.5 while reducing trauma and expansion of the central optical zone. Invention Formula A method of correcting myopia, which consists in making radial non-perforated incisions of the cornea, characterized in that, in order to increase the refractive effect, the incisions are continued in the retrolibal zone under the limbus to the sclera. H (Rig.2 XJCxV /