Sehschärfescharts

Sehschärfescharts, often referred to as eye charts or vision charts, are standardized visual acuity tests used to measure how clearly a person sees. They are a fundamental tool in ophthalmology and optometry for diagnosing vision problems and monitoring eye health. The most common type features a series of progressively smaller letters or symbols arranged in rows. The patient is asked to read the lowest line they can clearly distinguish from a specific distance, typically 20 feet (6 meters). The results are expressed as a fraction, such as 20/20, where the top number represents the testing distance and the bottom number indicates the size of the smallest line read, relative to what a person with normal vision can see at that distance.

The Snellen chart, developed by Dutch ophthalmologist Hermann Snellen in the 1860s, is the most widely recognized Sehschärfeschart. Other variations exist, including the Tumbling E chart for individuals who cannot read letters and the Landolt C chart, which uses broken rings. These charts are crucial for detecting refractive errors like myopia (nearsightedness), hyperopia (farsightedness), and astigmatism, as well as more serious conditions affecting visual acuity. Regular use of Sehschärfescharts in routine eye examinations helps ensure timely diagnosis and treatment of vision impairments.