This is a progressive degenerative disorder of the retina that can cause a profound loss of vision.

Complementary Treatment
Complementary treatment include supplements compounded expressly for vision care and wrap-around sunglasses.

Self Help
Since we consider most eye conditions to be a reflection of the health of the whole body, lifestyle choices and diet can play a major factor in getting and maintaining good vision. Recommendations include:

Vision Diet with good multivitamin
Limit your alcohol consumption
Eliminate smoking
Exercise daily
Manage your emotional health

Also see Drugs That Harm the Eyes