AN INSTRUMENT AND A METHOD FOR MEASURING THE ABERRATION OF HUMAN EYES

摘要

This invention discloses an instrument and a method for measuring the aberration of human eyes. According to the subjective ray tracing theory, upon the condition that the tested eye look attentively at a test-object, record the deflection distance between the incident lights passing through different sites of pupil and an ideal point on the fundus oculi, then change the incident angle, such that the incident lights coincide with the ideal point. Calculating the least square of the incident light's change, then two-dimensional wave aberration's value and various discrete aberration's value are obtained. The present invention generally comprises three optical paths used for measure, being reference and monitor the pupil respectively and a control computer, an LED array light and a measuring optical path which is conjugated with the pupil. According to the present invention, the test-object on an LCD screen which is conjugated with the fundus oculi is moved along with a mouse of a computer to change the incident angle, whereby to select a position of the light passing through the pupil.