Computerized perimetry is a diagnostic test that measures visual field or peripheral vision. It is used to detect and monitor various eye conditions such as glaucoma, macular degeneration, and optic nerve damage.

During the test, the patient is asked to focus on a central point while different points of light appear around the visual field. The patient then responds each time they see a light, which helps the computer map the visual field. It allows for more detailed and precise documentation of changes over time.