Loss of Peripheral Vision may lead to permanent damage to the eye

Generic cause of loss of ‪‎Peripheral Vision‬ is optic nerve damage from ‪Glaucoma‬.

‪‎Eye Strokes‬ (occlusions) that block normal blood flow to the eye's internal structures, including the optic nerve, also can lead to loss of peripheral vision. A stroke or injury also may damage portions of the brain where images are processed, leading to blind spots in the visual field.
If one suspects loss of peripheral vision, see the ‪Eye Doctor‬ for a comprehensive eye exam.