Calculating system for IOL rear surface average value after corneal refraction operation

A technology for calculating the system and average value, which is applied in medical science, eye testing equipment, diagnosis, etc., can solve problems such as large influence, large error, inaccurate radius of curvature of the back surface, etc., and achieve the effect of improving accuracy
CN113017556APending Publication Date: 2021-06-25福建眼界科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
福建眼界科技有限公司
Publication Date
2021-06-25

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Abstract

The invention discloses a calculating system for IOL rear surface average value after corneal refraction operation, and the system comprises a calculation origin selection module and a calculation module; the calculation origin selection module comprises a corneal vertex and a pupil center point, and the corneal vertex corresponds to a curvature average value in a first range, a curvature average value in a second range and a curvature average value in a third range; the pupil center point corresponds to the curvature average value on the first ring, the curvature average value on the second ring and the curvature average value on the third ring, and the calculation module comprises a first calculation formula and a second calculation formula. Compared with the prior art, the method has the advantages that the mean value of the curvature radiuses of the rear surface is calculated by calculating the mean value of the curvature radiuses of the multiple points, so that the accuracy of calculation of the curvature radiuses of the rear surface is improved.
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Description

technical field

[0001] The invention relates to the technical field of calculation of the average value of the IOL posterior surface after corneal refractive surgery, in particular to a calculation system for the average value of the IOL posterior surface after corneal refractive surgery. Background technique

[0002] Corneal refractive surgery is a method of correcting nearsightedness, hyperopia, and astigmatism. According to international standards, according to the site of surgery, it can be divided into 13 types in three categories: corneal surgery, lens surgery and scleral surgery.

[0003] However, multiple IOL degrees are required for calculation after corneal refractive surgery. There are many factors affecting the calculation process of IOL degrees, among which the corneal curvature has a greater impact. The accuracy of corneal curvature calculation directly affects the accuracy of IOL degree calculation. The parameters that have a greater impact on the calculation...

Claims

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