Author Affiliations: Division of Ophthalmology, Department of Clinical Neurosciences, Geneva University Hospitals, Geneva, Switzerland (Dr Richoz). Dr Seigel is retired.
Berson and colleagues1 claim that visual acuity loss is slower in adults with retinitis pigmentosa receiving vitamin A who also consume a diet rich in ω-3 fatty acids. They previously reported findings of a clinical trial of nutritional supplementation for patients with retinitis pigmentosa.2 They were criticized in 2 subsequent publications3,4 for overstating the strength of evidence for their clinical recommendations. The same can be said for this article.
Seigel D, Richoz O. ω-3 Intake in Patients With Retinitis Pigmentosa Receiving Vitamin A. JAMA Ophthalmol. 2013;131(2):267–268. doi:10.1001/jamaophthalmol.2013.590
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