Neglecting Glaucoma can lead to permanent loss of Peripheral Vision

If one is suffering from ‪Glaucoma‬, the best "‪Cure‬" for ‪Tunnel Vision‬/ ‪Peripheral Vision Loss‬ is prevention. If eye drops are prescribed, one must take the glaucoma medication regularly to control high eye pressure, or there is always a risk of permanent optic nerve damage and development of blind spots in the visual field. Left untreated, glaucoma can lead to permanent loss of peripheral vision and even ‪Blindness‬.

If one have permanent loss of peripheral vision, the one should consider visiting a ‪Low Vision Specialist‬ who can advise about special eye wear or optical devices that might help with mobility problems caused by tunnel vision.
Also, be aware that reduced peripheral vision may affect the ability to drive safely. A low vision specialist can tell about the extent of the peripheral vision loss and whether the remaining vision meets the legal requirement for a valid driver's license or not.

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.

Head injuries may result in loss of the Peripheral Vision.

Head injuries may result in loss of the Peripheral Vision. ‪Peripheral Vision‬ problems means that one doesn't have a normal, wide-angle field of vision, even though the central vision may be fine. Moderate and severe cases of peripheral vision loss create the sensation of seeing through a narrow tube, a condition commonly referred to as "tunnel vision." Symptoms of peripheral vision loss also can include difficulty seeing in dim light and decreased ability to navigate while you are walking.

If one witnesses a sudden decrease in peripheral vision, see the eye doctor immediately. Sudden loss of peripheral vision may indicate a detached retina, which is a medical emergency that must be treated as soon as possible to avoid permanent vision loss.