What vitamin are you lacking if you have dry eyes?

Written by Editorial Team | Last Updated: August 2026

Chronic dry eye symptoms can sometimes be an indicator of underlying nutritional deficiencies, most notably a lack of Vitamin A, which plays a fundamental role in maintaining the health and structural integrity of the ocular surface and tear film production. Vitamin A deficiency—often referred to as xerophthalmia in severe clinical cases—can lead to the thinning of the cornea, inflammation of the conjunctiva, and a reduction in the production of protective mucus that keeps the eyes lubricated. Beyond Vitamin A, deficiencies in Omega-3 fatty acids, Vitamin D, and Vitamin B12 are also frequently linked to ocular surface discomfort and disrupted tear composition. Individuals experiencing persistent or severe dry eyes should always consult with an ophthalmologist or a healthcare provider for a proper clinical diagnosis, as dry eye disease can be multifactorial, potentially stemming from environmental factors, medication side effects, or underlying autoimmune conditions rather than solely nutritional deficits.

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