What is an Autorefractor?
An autorefractor, sometimes called an automated refractor, is a device used during an eye exam to help determine visual acuity. The autorefractor has been in use since the 1970s. It quickly became a popular diagnostic device because of its ease of use. An optometrist or ophthalmologist uses the autorefractor to examine how the eye processes light. Refraction errors are identified with this device and can help the eye doctor determine whether a person needs prescription glasses or contact lenses. The traditional exam with an autorefractor takes just a few seconds. The patient is seated and rests his or her chin on a chin rest. A picture is examined by one eye at a time. When the picture is ideally placed on the retina, the autorefractor prints a detailed reading that determines visual acuity and the need for any type of corrective lenses. This exam is generally followed by an exam in which patients look at pictures and respond to the optometrist about how clear or fuzzy an image is. Thi
