Visual optics analysis system

Abstract

A visual optical analysis system is provided, which belongs to the technology field of medical optics. In the invention, the emergent light from a collimated laser source passes through a first light splitter and then is reflected to a cornea, the light from a flash lamp passes through an optical grating and a light-filtering projection system and then is projected onto a second light splitter, the second light splitter is positioned between the light-filtering projection system and the first light splitter, a third light splitter is provided between an aperture matching system and an imaging objective lens, an object is provided outside the third light splitter, a fourth light splitter is provided between the third light splitter and the light-filtering projection system, a part of the emergent light reflex from the cornea passes through the light-filtering projection system and then reaches a monitoring CCD, a defocusing compensation system is provided inside the aperture matching system, an astigmatism compensation system is positioned between the aperture matching system and a Shack-Hartmann wave-front sensor, and the Shack-Hartmann wave-front sensor is connected with a computer. The visual optical analysis system can accurately detect the corneal topography and the total aberration of human eyes and also accurately calculate the corneal aberration and the intraocular 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. Background technique [0002] The Shack-Hartmann wavefront aberration measurement method is a widely used objective wavefront aberration measurement method. The wave fronts reflected from the fundus pass through a lens array to form an array of focal 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 eye, the array of focal points will deviate. Based on the deviation of the focal point from the ideal position, the wavefront aberration is calculated. For the traditional Shaker-Hartmann wavefront aberration measurement method, when the aberration is large, such as when measuring high myopia or astigmatism, the wavefront is seriously deformed, and the actual position of the focal point deviates grea...

AI Technical Summary

Problems solved by technology

"The disadvantage is that the optical system needs to add an "additional measurement lens" when measuring the corneal topography data, so it cannot measure the corneal topography and wavefront aberration in real time at the same time, and due to the high value of the "additional measurement lens" The aperture is limited, the measurement range is limited, it can only cover a small area of ​​the cornea, and the topographic data of the entire cornea cannot be measured with high precision

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