What is an autorefraction test?

An autorefraction test is a procedure that uses automated technology to measure the refractive error of the eye, determining the prescription needed for corrective lenses. During this test, the patient looks into a machine that shines light into the eye. The device then assesses how the light changes as it passes through the eye’s optical system. This data allows the machine to calculate the required lenses to correct vision.

This test is commonly performed during comprehensive eye examinations and is considered an efficient way to gather initial refractive measurements. The automation of the test helps to streamline the eye examination process, saving time for both the clinician and the patient by providing immediate feedback on potential visual acuity and the need for glasses or contact lenses.

Other options, while related to eye care, represent different tests and assessments. For example, measuring eye pressure is typically done using tonometry, color vision deficiency tests assess the ability to distinguish colors, and tests for peripheral vision assess the field of vision. Each of these tests serves distinct purposes within the realm of optometry and ophthalmology but does not involve determining the prescription for corrective lenses as in the autorefraction test.