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Method for improving postoperative lens removal rate of cataract surgery with monofocal intraocular lens

An intraocular lens and single-focus technology, applied in intraocular lens, ophthalmic surgery, eye implants, etc., can solve the problem of low rate of tripping, achieve the effect of improving the difficulty of surgery and compensating for blindness

Inactive Publication Date: 2018-04-13
张云峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of low trip-out rate after cataract surgery using monofocal intraocular lens, and provides a method for improving the trip-out rate after cataract surgery with single-focal intraocular lens

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for improving the tripping rate after single-focal intraocular lens cataract surgery, comprising the following steps:

[0019] 1) Select 40 eyes of cataract patients implanted with the same type of monofocal intraocular lens, more than three months after operation, no fundus disease, no serious ocular surface disease, no large corneal astigmatism and large higher-order aberrations, and measure the distance The visual distance from the point of vision to the far end and the visual acuity is above 0.8, plus the reserved crystal power;

[0020] 2) In all the data obtained in step 1), remove 10% of excessive values ​​and 10% of small values, and take the minimum value in the densely distributed area within the remaining 80%;

[0021] 3) Input the data obtained in step 2) into the A-ultrasound for calculation to obtain the corrected A constant, and bring it into the IOL calculation formula corresponding to its value to calculate the power of the single-focal IOL use...

Embodiment 2

[0024] A method for improving the tripping rate after single-focal intraocular lens cataract surgery, comprising the following steps:

[0025] 1) Select 60 eyes of cataract patients implanted with the same type of monofocal intraocular lens, more than three months after operation, no fundus disease, no serious ocular surface disease, no large corneal astigmatism and large higher-order aberrations, and measure the distance The visual distance from the point of vision to the far end and the visual acuity is above 0.8, plus the reserved crystal power;

[0026] 2) In all the data obtained in step 1), remove 10% of excessive values ​​and 10% of small values, and take the minimum value in the densely distributed area within the remaining 80%;

[0027] 3) Input the data obtained in step 2) into the Master for calculation to obtain the corrected A constant, and bring it into the intraocular lens calculation formula corresponding to its value to calculate the power of the monofocal int...

Embodiment 3

[0030] A method for improving the tripping rate after single-focal intraocular lens cataract surgery, comprising the following steps:

[0031] 1) Select 80 eyes of cataract patients implanted with the same type of monofocal intraocular lens, more than three months after operation, no fundus disease, no serious ocular surface disease, no large corneal astigmatism and large higher-order aberrations, and measure the distance The visual distance from the point of vision to the far end and the visual acuity is above 0.8, plus the reserved crystal power;

[0032] 2) In all the data obtained in step 1), remove 10% of excessive values ​​and 10% of small values, and take the minimum value in the densely distributed area within the remaining 80%;

[0033] 3) Input the data obtained in step 2) into Nidek AL-Scan for calculation to obtain the corrected A constant, and bring it into the IOL calculation formula corresponding to its value to calculate the power of the single focus IOL used i...

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Abstract

The invention discloses a method for improving postoperative lens removal rate of cataract surgery with monofocal intraocular lens. The method includes the steps of using a defocus curve method for measuring the vision of a patient with cataract implanted with the same type of monofocal intraocular lens, correcting the A constant, selecting the appropriate monofocal intraocular lens to perform surgery and the like; the method has the advantages that the method corrects the A constant of the monofocal intraocular lens by measuring the defocus curve of the patient with cataract implanted with the same type of monofocal intraocular lens, purposefully selects the appropriate type of monofocal intraocular lens to perform surgery, solves the problems of having only distance vision, middle visionor near vision after the implantation surgery of the monofocal intraocular lens, makes up for the implantation surgery of the monofocal intraocular lens, and makes the patient have good distant, medium and near vision at the same time. The lens removal rate after the surgery by using the method is not less than 90%. The method does not change the surgical method, does not increase the difficultyof the surgery, and does not generate extra expenses.

Description

technical field [0001] The invention relates to the treatment of cataracts, in particular to a method for improving the rate of tripping after cataract surgery with single-focus intraocular lenses. Background technique [0002] Cataract is an eye disease caused by lens metabolism disorder and lens protein degeneration caused by aging, genetics, nutritional disorders, metabolic abnormalities, trauma, radiation and other factors. Cataract manifests as progressive loss of vision, glare, monocular diplopia, increased myopia and other symptoms, which seriously affect the daily life of patients. In the early stage of cataract, vitamin C, vitamin B2, vitamin E and other drugs can be taken orally to delay the development of the disease. Some cataract patients in the middle stage can improve their vision and lens opacity after taking medicine. However, for mature cataract, drug treatment has no practical significance. can be treated surgically. Implantation of intraocular lens is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007A61F2/16
CPCA61F2/16A61F2/1613A61F9/00736
Inventor 张云峰单蕾赵学武王楠
Owner 张云峰
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