Arch Ophthalmol Chic
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Arch Ophthalmol Chic · Jun 1993
Randomized Controlled Trial Comparative Study Clinical TrialA randomized trial of vitamin A and vitamin E supplementation for retinitis pigmentosa.
To determine whether supplements of vitamin A or vitamin E alone or in combination affect the course of retinitis pigmentosa. ⋯ These results support a beneficial effect of 15,000 IU/d of vitamin A and suggest an adverse effect of 400 IU/d of vitamin E on the course of retinitis pigmentosa.