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Nutrition and retinal degenerations.

E L Berson1

  • 1Harvard Medical School, Massachusetts Eye and Ear Infirmary, Boston, MA 02114, USA.

International Ophthalmology Clinics
|November 7, 2000
PubMed
Summary

Nutritional interventions, including vitamin and mineral supplements, show promise in managing degenerative retinal diseases like retinitis pigmentosa and age-related macular degeneration (ARMD). Further research is needed to confirm benefits and explore other conditions responsive to dietary changes.

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Area of Science:

  • Ophthalmology and Nutritional Science
  • Investigating the role of diet in retinal health.

Background:

  • Degenerative diseases of the retina, particularly those affecting photoreceptors, present significant vision challenges.
  • Nutritional therapies have demonstrated success in managing several inherited retinal conditions.

Purpose of the Study:

  • To review the current understanding of nutritional approaches in managing degenerative retinal diseases.
  • To highlight the therapeutic potential of dietary modifications for genetic and age-related retinal conditions.

Main Methods:

  • Review of existing literature on nutritional interventions for specific retinal disorders.
  • Mention of ongoing randomized trials for age-related macular degeneration (ARMD) involving antioxidants and minerals.
  • Emphasis on risk-factor analyses using food-frequency questionnaires and visual function assessments.

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Main Results:

  • Vitamin A supplementation is effective for retinitis pigmentosa and Sorsby fundus dystrophy.
  • Vitamins A, E, and K aid Bassen-Kornzweig disease; vitamin B6 and dietary changes help gyrate atrophy.
  • Higher carotenoid intake is linked to reduced risk of advanced ARMD; ongoing trials investigate antioxidant and zinc supplementation for ARMD.

Conclusions:

  • Nutritional therapy is effective in modifying the course of several degenerative retinal diseases.
  • The therapeutic benefits of nutritional modification in genetically based retinal diseases warrant further investigation.
  • Identifying additional dietary constituents that can influence retinal degeneration requires continued research.