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].
That is where eye vitamins come in. 1  Vitamin A: Vitamin A was the first vitamin thoroughly investigated for its health benefits, hence its name.  Vitamin B1: Also known as Thiamin, vitamin B1 acts as a coenzyme for certain chemical reactions in the body, assisting enzymes during those reactions.