Visual optics analysis system based on wave-front abberration

Abstract

A visual optical analysis system based on a wave-front aberration is provided, which belongs to the technology field of medical optics. In the invention, a first light splitter is positioned between a light diaphragm and a cornea, the emergent light from a Placideo's disk passes through a second light splitter and a third light splitter and then is projected onto the surface of the cornea, the emergent light from the cornea is reflected by a fourth light splitter to a corneal topography imaging system, the corneal topography imaging system is positioned between a first aperture-matching system and a monitoring CCD, an astigmatism compensation system is positioned between the first aperture-matching system and a beam-splitting prism, a part of the emergent light reflex from the beam-splitting prism passes through a second aperture-matching system and then one part thereof reaches an object and the other part radiates to a Shack-Hartmann wave-front sensor, the emergent light from the beam-splitting prism is partially transferred to a deformable mirror, an imaging objective lens is provided between a fifth light splitter and the object, and the Shack-Hartmann wave-front sensor and the deformable mirror are respectively connected with a computer. The visual optical analysis system realizes the data acquisition of human eye aberration and corneal topography, as well as correction of the human eye aberration.

Description

technical field [0001] The invention relates to a system in the technical field of medical optics, in particular to a visual optical analysis system based on wavefront aberration. Background technique [0002] The Shaker-Hartmann wavefront aberrometer is an objective wavefront analyzer widely used now. The wavefront reflected from the fundus passes through a lens array to form an array of focusing points. If it is an ideal eye system, the reflected parallel wave fronts will produce point arrays with equal intervals and regular distribution after focusing. But for an aberrated eyeball, the individual focus points will deviate. Based on the deviation of each focal point from the ideal position, wavefront aberrations are calculated. For the traditional Shaker-Hartmann wavefront aberrometer, when the aberration is severely deformed, the deviation of the focus point is very large, making it difficult to identify the one-to-one correspondence with the focus point at the ideal po...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the optical system only measures the low-level and high-level aberrations of the human eye, and cannot reflect the subjective visual response of the subject. Applied in clinical practice that needs to analyze the overall aberration of the human eye and each component unit

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