SU975011A1 - Method of marking main meridian of astigmatic eye - Google Patents
Method of marking main meridian of astigmatic eye Download PDFInfo
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- SU975011A1 SU975011A1 SU813304275A SU3304275A SU975011A1 SU 975011 A1 SU975011 A1 SU 975011A1 SU 813304275 A SU813304275 A SU 813304275A SU 3304275 A SU3304275 A SU 3304275A SU 975011 A1 SU975011 A1 SU 975011A1
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- SU
- USSR - Soviet Union
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- main meridian
- astigmatic eye
- marking
- eye
- marking main
- Prior art date
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Description
Изобретение относитс к медицине , а именно к офтальмологии.The invention relates to medicine, namely to ophthalmology.
Известен способ маркировки главного меридиана астигматического глаза путем нанесени меток на роговицу Ci.A known method of marking the main meridian of the astigmatic eye by labeling the cornea with Ci.
Однако известный способ не обеспечивает точной маркировки, так как не всегда объективно определ емое положение главных меридианов совпадает с тем положением, которое выбирает пациент при субъективном исследовании, и возможны ошибки в индикации главных меридианов, св занные с установкой на глазу протеза-марковщика , а также с изменением положени оперируемого глаза по сравнению с тем, в котором проводили объективноепредоперационное исследование рефракции.However, the known method does not provide accurate marking, since the objectively determined position of the main meridians is not always the same as the position chosen by the patient in a subjective study, and there may be errors in the indication of the main meridians associated with the installation on the prosthetic marketer, with a change in the position of the operated eye compared to that in which an objective pre-operative refraction study was conducted.
Целью изобретени вл етс повышение точности.The aim of the invention is to improve the accuracy.
Эта цель достигаетс тем, что согласно способу маркировки главного меридиана астигматического глаза путем нанесени меток на роговицу метки нанос т лазерным излучением или тонким хирургическим инструментом через стенопеическую цель.This goal is achieved in that according to the method of marking the main meridian of the astigmatic eye by marking marks on the cornea, laser marks or a thin surgical instrument are applied through the stenopeic target.
Способ осуществл ют следующим образом .The method is carried out as follows.
Непосредственно перед операцией перед исследуемым глазов в пробной оправе устанавливают диафрагму со стенопеической щелью 1,5 мм, второй глаз закрывают заслонкой. Исследуемый усаживаетс на рассто нии Immediately before the operation, a diaphragm with a 1.5 mm wall stenopeicum is installed in the test frame in front of the examined eyes, and the second eye is closed with a shutter. The test settles at a distance of
10 5 метров от таблицы дл проверки остроты зрени и, поворачива щель то в одну, то в другую сторону, устанавливает ее в таком положении, при Котором получаетс наиболее вы15 сока острота зрени . Это направление как правило совпадает с положением одного из главных меридианов астигматического глаза, рефракци которого приближаетс к эмметропи20 ческой. Соответственно второй главный меридиан располагаетс под углом 90 к этому меридиану. В случа х смешанного астигматизма в глазу могут иметьс меридианы с эмметро25 пической рефракцией, которые располагаютс примерно под углом 45 к главным меридианам. Во избежании ошибок в определении главных меридианов перевод т рефракцию одного 10 5 meters from the table to check the visual acuity and, turning the slit into one or the other side, sets it in a position at which the maximum visual acuity is obtained. This direction, as a rule, coincides with the position of one of the main meridians of the astigmatic eye, whose refraction approaches emmetropic. Accordingly, the second main meridian is located at an angle of 90 to this meridian. In cases of mixed astigmatism in the eye, there can be meridians with emmetropic refraction, which are approximately at an angle of 45 to the main meridians. In order to avoid errors in the determination of the main meridians, the refraction of one
30 из них в эмметропическую или близ30 of them in emmetropic or near
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813304275A SU975011A1 (en) | 1981-05-06 | 1981-05-06 | Method of marking main meridian of astigmatic eye |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813304275A SU975011A1 (en) | 1981-05-06 | 1981-05-06 | Method of marking main meridian of astigmatic eye |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU975011A1 true SU975011A1 (en) | 1982-11-23 |
Family
ID=20964211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813304275A SU975011A1 (en) | 1981-05-06 | 1981-05-06 | Method of marking main meridian of astigmatic eye |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU975011A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576780A1 (en) * | 1985-02-04 | 1986-08-08 | Azema Alain | APPARATUS FOR ALTERING THE CORD OF THE OCULAR CORNEA ON ALL SURFACE PUPILLAR BY PHOTOCHEMICAL ABLATION OF THIS CORNEA |
| US4902122A (en) * | 1987-09-04 | 1990-02-20 | Synthelabo | Optical system for determining the variation of curvature of an object on a zone of small dimensions |
-
1981
- 1981-05-06 SU SU813304275A patent/SU975011A1/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576780A1 (en) * | 1985-02-04 | 1986-08-08 | Azema Alain | APPARATUS FOR ALTERING THE CORD OF THE OCULAR CORNEA ON ALL SURFACE PUPILLAR BY PHOTOCHEMICAL ABLATION OF THIS CORNEA |
| WO1986004500A1 (en) * | 1985-02-04 | 1986-08-14 | Biophysic Medical S.A. | Surgical apparatus for modifying the curvature of the eye cornea |
| EP0191688A1 (en) * | 1985-02-04 | 1986-08-20 | Synthelabo | Surgical apparatus for corneal curvature adjustment |
| US4902122A (en) * | 1987-09-04 | 1990-02-20 | Synthelabo | Optical system for determining the variation of curvature of an object on a zone of small dimensions |
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