Ophthalmologists and optometrists diagnose peripheral vision loss by performing vision tests to see how far to the side a person can see or identify an object. A confrontation visual field test is ...

There are two possibilities; either the 'private line' ensured ... A critical test between these hypotheses is color vision in far peripheral retina, at eccentricities beyond 20-30 degrees.

This is an image to demonstrate visual 'crowding' and test peripheral vision. Ensure that the red dot in the centre of the image is at eye level and focus on it. While holding your focus on the ...

You may need a visual field test to help your doctor monitor or see signs of certain diseases like glaucoma. In the earlier stages of glaucoma, you may lose peripheral vision without realizing it ...