Which vitamin is critical for ( eye ) vision?

InfoSource: http://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/

Vitamin A is involved in immune function, vision, reproduction, and cellular communication [1,4,5].

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].