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A cataract is a clouding of the eye lens. The lens works with the cornea to bend light as it passes through to the retina. It is normally clear. A cloudy lens makes it hard for light to pass through. Your vision may be cloudy, hazy, and blurred. You may develop a cataract in one or both eyes.

Eye Anatomy


Return to the emergency department if:

  • You suddenly lose your eyesight.
  • You feel a sudden, sharp pain in your eye.

Call your doctor or ophthalmologist if:

  • You have questions or concerns about your condition or care.

Follow up with your doctor as directed:

Write down your questions so you remember to ask them during your visits.

Protect your eyes:

  • Wear sunglasses to protect your eyes from the sunlight and prevent eye discomfort. Make sure the sunglasses have UV protection.
  • Do not smoke. Cigarette smoking increases your risk for cataracts. Ask your healthcare provider for information if you currently smoke and need help to quit. E-cigarettes or smokeless tobacco still contain nicotine. Talk to your healthcare provider before you use these products.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Learn more about Cataracts (Aftercare Instructions)

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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.