The currently available body of evidence is not strong enough to support vitamin supplementation as a treatment for dry eye disease, with particular gaps around vitamins C and B12, according to a review.“Many patients [with dry eye disease] continue to experience persistent symptoms despite conventional therapies,” study author Hamidreza Heidari, MSc Optom, FBCLA, a PhD candidate at UNSW Sydney, told Healio. “There has been growing interest in the role of nutrition in addressing ocular surface diseases. ... However, the available evidence was scattered and inconsistent.”