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Method and system for determining corneal power

A technology of diopter and cornea, which is applied in the field of corneal topography, can solve the problems of not having the function of corneal refraction topography, and achieve the effect of precise diopter

Active Publication Date: 2018-03-20
SHENZHEN CERTAINN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current commercial OCT products only have the function of corneal topography and do not have the function of corneal refractive topography

Method used

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  • Method and system for determining corneal power
  • Method and system for determining corneal power
  • Method and system for determining corneal power

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Experimental program
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Embodiment Construction

[0037] figure 1 It is the application environment diagram of a preferred embodiment of the corneal boundary curve fitting system of the present invention, please refer to figure 1 . The corneal boundary curve fitting system 10 of the present invention can run in a hardware environment composed of a data processing device 1 and an ophthalmic imaging device 2 .

[0038] The data processing device 1 may include electronic devices and devices with certain data processing capabilities such as personal computers and servers. Further, the data processing device 1 may further include computer auxiliary equipment, such as printers, scanners, mobile hard disks, cameras, U disks, mp3, mp4, mp5 players, network cards, hubs, switches, routers, twisted pairs, Wireless network equipment, etc.

[0039] The ophthalmic imaging device 2 may be a device for diagnostic imaging, such as a device with a slit scanning technology (Orbscan) for the human eye, a device with a Scheimpflug imaging tech...

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Abstract

A method for calculating corneal refractive power, comprising: collecting a corneal image of an eyeball by means of an ophthalmic imaging device (2) (S10); performing scanning-correction on the acquired corneal image (S11), recognizing an outer boundary curve of the corneal image, fitting the outer boundary curve (S12), and calculating the refractive power Douter of the outer boundary of the cornea (S13); performing refractive-correction on the acquired corneal image (S14), recognizing an inner boundary curve of the corneal image, fitting the inner boundary curve (S15), and calculating the refractive power Dinner of the inner boundary of the cornea (S16); calculating the total refractive power Dtotal of the cornea by using the calculated refractive powers of the inner and outer boundaries (S17). Further provided is a system for calculating corneal refractive power. The method is capable of more accurately fitting the boundary curves of a cornea, and resulting in more precise refractive powers.

Description

technical field [0001] The present invention relates to the technical field of ophthalmology image processing, in particular to a method for determining corneal inner and outer diopters, a method and system for determining corneal diopters, a method for fitting corneal boundary curves, and a method for making corneal topographic maps based on corneal inner and outer boundary diopters . Background technique [0002] The cornea is located at the front of the eyeball and plays an extremely important role in the refractive system of the eyeball. [0003] Corneal refractive surgery is laser ablation on the cornea. Preoperative corneal examination is particularly important for corneal refractive surgery. Corneal topography inspection has undoubtedly become a preoperative "safety valve". The corneal topography generated by computer-assisted technology can accurately analyze the changes in the shape and curvature of the entire corneal surface, and can screen out the absolute contra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16H50/50
CPCG16Z99/00
Inventor 郭曙光冯东亮彭念
Owner SHENZHEN CERTAINN TECH CO LTD
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