Zymaxid can be expensive if you don't have health insurance, prices at local pharmacies can vary greatly, but be prepared to pay as much as $100 for a 2.5ml bottle size of zymaxid 0.5 eyedrops.
Vitamin A is critical for vision as an essential component of rhodopsin, a protein that absorbs light in the retinal receptors, and because it supports the normal differentiation and functioning of the conjunctival membranes and cornea [2-4].
Diet & Nutrition. 1  Vitamin A is the most clearly researched deficiency associated with night blindness. 2  Zinc if you have a zinc deficiency, then zinc combined with vitamin A is more helpful than vitamin A alone.1. 3  See our recommendations for diet / lifestyle.  Vegetables.