Refraktionsundersökning

Refraktionsundersökning is a Swedish term that translates to refraction examination or refraction test in English. It is a fundamental eye examination performed by optometrists and ophthalmologists to determine a person's refractive error. Refractive errors occur when the eye does not focus light correctly onto the retina, leading to blurred vision. Common refractive errors include myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia (age-related farsightedness).

The primary goal of a refraktionsundersökning is to measure the eye's focusing power and identify the correct prescription for corrective lenses, such as eyeglasses or contact lenses, that will provide clear vision. The examination typically involves a series of tests. One common method is subjective refraction, where the patient is shown a series of lenses of different strengths and asked to indicate which lenses provide the clearest vision. Another method is objective refraction, which uses instruments like a phoropter or an autorefractor to automatically measure the refractive error without direct input from the patient.

During the examination, the eye care professional may also assess other aspects of visual function, such as visual acuity, binocular vision, and eye alignment, to ensure a comprehensive understanding of the patient's visual health. A refraktionsundersökning is a routine procedure for many individuals, whether for a new prescription, a follow-up, or as part of a general eye health check. It is essential for diagnosing and managing vision problems and improving a patient's quality of life through clearer sight.