Nystagmus

Nystagmus is an involuntary, most often constant twitching back and forth, movement of the eyes which often reduces vision because it makes it difficult to look steadily at an object. It is also a common vision problem found in albinism, which results from abnormal development of both the retina and nerve connections ...between the eye and the brain. Although nystagmus normally occurs in infancy, you can also acquire nystagmus due to accidents or certain illnesses such as stroke or multiple sclerosis. Reduced vision may be improved with glasses and low vision aids, but nystagmus is permanent. The rapper from the Black Eyed Peas; Allan Pineda Lindo, is “legally blind” due to nystagmus.