synskärpatest

Synskärpetest, often translated as visual acuity test, is a fundamental examination used to measure how clearly a person can see at a distance. This test is a crucial component of routine eye exams and is essential for diagnosing a wide range of vision problems, from simple refractive errors like myopia (nearsightedness) and hyperopia (farsightedness) to more serious conditions such as cataracts or macular degeneration.

The most common method for conducting a synskärpetest is by using a Snellen chart. This chart features rows of letters or symbols that decrease in size from top to bottom. The individual being tested stands at a specific distance from the chart, typically 20 feet (or 6 meters), and is asked to read the smallest line they can clearly distinguish. The results are typically recorded as a fraction, such as 20/20. The top number represents the distance at which the test is performed, and the bottom number indicates the distance at which a person with normal vision could read that same line. A score of 20/20 is considered standard or normal vision. A score of 20/40 means the individual can see at 20 feet what a person with normal vision can see at 40 feet.

Variations of the synskärpetest exist, including the Tumbling E chart for individuals who cannot read letters, and tests performed at different distances for specific assessments. The synskärpetest is a quick, non-invasive, and vital tool for assessing visual function and ensuring optimal eye health.