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Updated: Jan 10, 2026

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Poor Vision from Copper Deficiency.

Leslie M Klevay1

  • 1University of North Dakota School of Medicine and Health Sciences, 1301 North Columbia Rd, Grand Forks, ND, 58202-9037, USA. leslie.klevay@ndus.edu.

Current Nutrition Reports
|November 21, 2025
PubMed
Summary
This summary is machine-generated.

Copper deficiency can cause severe vision loss. Prompt copper replacement therapy, often with copper gluconate, can significantly improve eyesight, though optimal treatment details require further research.

Keywords:
Copper deficiencyDiagnostic testsDietary copperOptic neuropathyVision loss

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Area of Science:

  • Ophthalmology
  • Nutritional Science
  • Biochemistry

Background:

  • Copper deficiency is an underdiagnosed cause of optic neuropathy.
  • Limited literature exists on the clinical presentation and management of copper-related visual impairment.

Purpose of the Study:

  • To review medical literature on vision loss associated with copper deficiency.
  • To discuss copper nutrition, epidemiology, patient evaluation, and treatment strategies.

Main Methods:

  • Systematic review of a dozen medical articles.
  • Analysis of clinical case reports detailing vision changes and treatment outcomes.

Main Results:

  • Severe vision loss in one patient improved from 20/400 to 20/25 with copper supplementation.
  • Copper gluconate is suggested as a preferred supplement, with daily doses of several milligrams for months.
  • Erythrocyte superoxide dismutase levels are a sensitive indicator of copper deficiency.

Conclusions:

  • Copper deficiency is a treatable cause of optic neuropathy and vision loss.
  • Further research is needed to define optimal copper repletion protocols.
  • Early diagnosis and intervention are crucial for visual recovery.