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Medically reviewed by Last updated on Jun 5, 2024.

What is pterygium?

Pterygium is a growth over a section of your eye that slowly appears over time. It often grows on the inner edge of your eye between your pupil and your nose. It may also grow on the outer edge of your eye, between your pupil and the side of your face. Pterygium may affect one or both eyes.

What increases my risk for pterygium?

What are the signs and symptoms of pterygium?

How is pterygium diagnosed?

Your healthcare provider will examine your eye and ask you about your signs and symptoms. Tell your provider if you have been exposed to sunlight or dust over a long period of time without wearing eye protection. Your provider may also use a microscope with a strong light to look inside your eye.

How may pterygium be treated?

You may not need treatment unless your condition bothers you or affects your vision.

What are the risks of pterygium?

Surgery may cause swelling, irritation, or infection. Your eyesight may also not be as sharp as before. Your pterygium may grow back after surgery. Without treatment, your symptoms such as swelling or burning may become worse. A pterygium that grows too large can affect your vision.

How can I help prevent pterygium?

When should I contact my healthcare provider?

When should I seek immediate care?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. 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.

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Further information

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