Computerized refraction testing, also known as automated refraction or computerized vision testing, is a modern method of conducting eye exams to determine a person's refractive error and prescribe corrective lenses. It utilizes computer-based instruments and technology to provide accurate and objective measurements of an individual's vision. Here's an overview of how computerized refraction testing works: Patient Preparation: The patient is seated comfortably in front of the computerized refraction system, which typically consists of a digital refractor or an autorefractor. Objective Refraction Measurement: The autorefractor uses infrared light or other technology to measure the patient's refractive error objectively. The patient focuses on a target while the instrument analyzes the light reflected from the patient's retina to determine the eye's focusing power. Subjective Refraction Measurement: After obtaining the objective measurements, the optometrist or eye care professional fine-tunes the results through subjective refraction. The patient is asked to look through a phoropter, a device containing multiple lenses that can be adjusted to test different corrective lens options. The patient is then asked to provide feedback on which lens options provide the clearest vision.
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