How To Spot And Diagnose X-Linked Retinoschisis

Visual Field Test

A visual field test is used to determine whether an individual has blind spots in their vision and where the blind spots are located. The visual field is the amount of area an eye can see when an individual focuses on one central point. Visual field testing is one of the ways an ophthalmologist measures the amount of vision an individual has in either of their eyes, and the amount of vision loss that might have occurred. A confrontational visual field test is done by having a patient cover one eye and look at a central point with another. The doctor will hold up different numbers of fingers in the patient's peripheral vision to determine whether they can see them. An automated perimetry test might be used to gauge how well individuals see objects in their field of vision. This type of test creates more detailed maps of an individual's blind spots.