Corneal vertex alignment method and system, and eye axis optical path length measurement method and system

Abstract

The invention discloses a corneal vertex alignment method, which comprises the following steps of judging a corneal vertex to be located in a vertical plane on which a principal optic axis of an ophtalmological optics system is located according to a cornea position alignment module in a vertical direction, judging the corneal vertex to be located in a horizontal plane on which the principal optic axis of the ophtalmological optics system is located according to a cornea position alignment module in a horizontal direction, and confirming the corneal vertex to be located on the principal optic axis of the ophtalmological optics system; judging the corneal vertex to be located in front of or in rear of a working position arranged by the ophtalmological optics system according to the cornea position alignment module in the vertical direction or the cornea position alignment module in the horizontal direction; moving the corneal vertex to the working position. The invention also discloses a corneal vertex alignment system, an OCT (Optical Coherence Tomography) system for applying the method to eye axis optical path length measurement, and an eye axis optical path length measurement method. According to the invention, the perfect alignment of the corneal vertex is realized, and the accurate measurement of the eye axis optical path length is realized on the basis.

Description

technical field [0001] The invention belongs to the field of OCT in ophthalmology, and in particular relates to a method and a system for precisely aligning corneal vertices and applying the method and system to eye axis optical path length measurement and ophthalmic medical equipment. Background technique [0002] Optical coherence tomography (OCT, Optical Coherence Tomography) is an emerging optical imaging technology. Compared with traditional clinical imaging methods, it has the advantages of high resolution, imaging speed, no radiation damage, moderate price, and compact structure. An important potential tool for basic medical research and clinical diagnostic applications. Currently, among various ophthalmic devices using optical instruments, an OCT device for ophthalmic examination and treatment has become an indispensable ophthalmic device for ophthalmic disease diagnosis. [0003] In many ophthalmic medical instruments, the main optical axis of the optical path of t...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a corneal vertex alignment method and system, and also provides an OCT system for measuring the axial optical path length of the human eye by using the corneal vertex alignment system, and also provides an application of the corneal vertex alignment method to measuring The method on the axial optical path length of the human eye aims to solve the following defects: (1), the corneal apex cannot be accurately aligned; (2), the eye axial optical path length measurement is not accurate because the corneal apex cannot be accurately aligned

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