What is an Autorefractor? | 合法醫療器材資訊網

2015年10月6日—WhatisanAutorefractor?...Anautorefractorisusedtodetermineanindividual'sprescriptionbymeasuringhowlightisaffectedasitreflects ...

Eyes are complicated organs full of nerves, muscles, soft tissues and blood vessels. They work together to provide sight, what many consider the most valued of the five senses. Because eyes are so complex, it is not always easy to determine the precise prescription necessary for 20/20 vision. With an autorefractor, this is possible.

An autorefractor is used to determine an individual’s prescription by measuring how light is affected as it reflects through the eyeball. The process is quick and painless for the patient, and the data ensures a baseline to determine the correct eyeglass or contact lens prescription.

First, the autorefractor shines light into the eye, measuring how it changes as it bounces off the back of the eye (the ocular fundus). Then, the patient is shown an image that moves in and o...