Ophthalmic measurement system and method

Abstract

The invention discloses an ophthalmic measurement system and method. The system comprises a main body module and a probe assembly, wherein the main body module is used for providing measurement light,enabling the measurement light to pass through the probe assembly and enter a to-be-measured eye, returning an optical signal, enabling the optical signal to pass through the probe assembly, and transmitting the optical signal to the main body module. The probe assembly comprises an iris shooting module and an oblique angle anterior segment shooting module, wherein the iris shooting module is used for shooting an iris image of the to-be-measured eye, and a light path of the image shot by the iris shooting module is coaxial with a part of light path between the measurement light and the to-be-measured eye; and the oblique angle anterior segment shooting module is used for shooting an oblique angle anterior segment image of the to-be-measured eye, and a preset angle is formed between the light path of the image shot by the oblique angle anterior segment shooting module and part of the light path between the measurement light and the to-be-measured eye. According to the invention, accurate human eye parameters can be obtained.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to an ophthalmology measurement system and method. Background technique [0002] Nowadays, more and more elderly people suffer from cataract eye disease, and implanting intraocular lens is an effective solution for cataract widely used at present. However, the calculation of intraocular lenses requires many parameters, such as corneal anterior and posterior surface curvature, corneal thickness, anterior chamber depth, lens thickness, lens anterior and posterior surface curvature, eye axial length, white-to-white distance, pupil diameter, etc. However, the measurement systems and methods in the prior art often have large errors in the measurement of eye parameters. For example, Chinese patent document 201911073986.4 discloses a method for measuring the axial length of the eye, which uses corneal photography and imaging of the side eye to correct the measurement process of the...

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Problems solved by technology

However, the measurement systems and methods in the prior art often have large errors in the measurement of eye parameters. For example, Chinese patent document 201911073986.4 discloses a method for measuring the axial length of the eye, which uses corneal photography and imaging of the side eye to correct the measurement process of the axial length of the eye. However, the imaging of the side eye cornea is easily affected by ambient light, and the cornea is relatively transparent, so it is difficult to identify the corneal apex, so the error is large

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