sjónarsviðspróf

Sjónarsviðspróf, also known as a visual field test, is a medical examination used to assess a person's peripheral vision. It is a crucial diagnostic tool for detecting and monitoring various eye conditions that can affect the visual field, such as glaucoma, macular degeneration, and neurological disorders. The test measures the extent of vision in all directions from the point of fixation, essentially mapping out the areas where a person can and cannot see.

There are several methods for performing a sjónarsviðspróf. The most common is the confrontation visual field test, which is a quick and simple bedside assessment. In this method, the examiner compares their own visual field to the patient's, moving fingers or a small object into the patient's peripheral vision from different directions. Another widely used technique is automated perimetry, which uses a machine to present lights of varying brightness and location to the patient. The patient indicates when they see the light, and the machine records their responses to create a detailed map of their visual field. Other methods include tangent screen perimetry and Goldmann perimetry, which are often used for more specific or detailed assessments.

The results of a sjónarsviðspróf are interpreted by an ophthalmologist or optometrist. Any blind spots, or scotomas, in the visual field can indicate underlying problems. The size, shape, and location of these scotomas, along with changes over time, help in diagnosing and managing eye diseases. Regular sjónarsviðspróf is particularly important for individuals at risk for or with known visual field defects to prevent further vision loss.