Diagnosis of cataracts is based on a medical history and physical examination.

Often tests are used to:

• Confirm the presence of a cataract.
• Rule out other conditions that may be causing vision loss.

For more information, see the topics Vision Tests, Ophthalmoscopy, and Tonometry.

In deciding whether to have surgery, it can be very helpful to evaluate the effect that vision loss from a cataract has on your life. Your doctor may ask you to complete a questionnaire regarding the effect of the cataract on daily activities.

If you have already experienced some vision loss that cannot be corrected by cataract surgery, your doctor also may perform a low-vision evaluation to help find ways for you to make the most of your remaining vision and maintain your quality of life.

Early Detection

Routine screening for cataracts in adults is not necessary since most adults have an eye exam when they are having vision problems.

Testing your child for cataracts may be necessary if you think your child is having a vision problem.

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