Age related eye diseases like macular degeneration, glaucoma and diabetic retinopathy can result in formation of blind spots (also referred as scotomas) leading to permanent vision loss, particularly in seniors.
Best idea visit your oculist to have professional advise in every specific case.
Every 1 in 3,500 to 1 in 4,000 individuals in the United States are fighting with Retinitis Pigmentosa, a chronic eye disease causing a progressive degeneration of the retina leading to loss of sight and legal blindness.
Unfortunately, Retinitis Pigmentosa cure has not been found yet. But that dosen’t mean life with RP has to be dull and a black blur.
You should probably visit your oculist in order to get a professional opinion on the situation. A forum is not a good place for asking for some advice.