sorry to hear your news, theresa - i hope you can arrange a serum zinc test to either a) provide you with an option for treatment, or b) to at least be able to rule out zinc involvement in your case.
Nutritional effects of zinc on ocular and systemic physiologyhttp://www.ncbi.nlm.nih.gov/pubmed/6454715
High concentrations of zinc are found in human ocular tissues and are closely related to visual function. When zinc levels are inappropriately low, results can include ocular birth defects, reduced ability to dark adapt, excessively low IOP, and optic neuritis.
my approach: no meds so far - just nutrient-dense anti-inflammatory whole foods, and supplements where needed
info: www.whfoods.com, www.nutritiondata.com