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Night Blindness Causes & Risks

Causes

There are several common causes of night blindness:

  • Lack of vitamin A, which can cause a disorder of the retina and make the eyes very dry
  • Cataracts , which are cloudy areas in the lens of the eye
  • Some forms of retinal degeneration, such as retinitis pigmentosa
  • Trouble adjusting from low levels of light to high levels of light
  • Certain medications
  • Birth defects

Risk Factors

A risk factor is something that increases your chance of getting a disease or condition. Some risk factors for night blindness include:

  • Age: elderly people are more likely to have cataracts
  • Genetics: retinitis pigmentosa
  • Diet: people who don’t eat enough sources of vitamin A, such as green leafy vegetables, eggs, and whole milk products (vitamin A deficiency is very rare in the US, but still occurs in certain less developed countries)
  • Disorders that affect the ability of the body to absorb vitamin A:
    • Liver disorders
    • Surgery on the pancreas or liver
    • Intestinal conditions
    • Bowel surgery for obesity

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition. Copyright © 2019 EBSCO Publishing All rights reserved.

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