Pterygium

What Is Eye Web (Pterygium)?

Pterygium, also referred to as eye web, is an elevated, pink-red lesion growing from the conjunctiva (the transparent layer that covers the white part of the eye) onto the cornea (the clear central windshield of the eye). A pterygium may grow from one or both sides onto the cornea, though the nasal side is more common. It often has a wing-like shape.

What Causes Pterygium?

The exact cause of pterygium is unknown. It is thought to be a lesion that forms when the eye has been exposed to prolonged sunlight and wind over many years. A higher rate of these lesions is seen in patients who live or have lived closer to the equator. UV radiation has also been associated with this condition.

The Symptoms of Pterygium

Pterygium symptoms can vary from person to person. Mild cases of pterygium may not cause issues, but larger growths can cause symptoms ranging from blurry vision, eye irritation and tearing. Occasionally, they may become inflamed, causing significant eye redness and pain. If the pterygium invades the cornea area significantly, it may distort the shape of the eye’s surface and causing more issues, such as astigmatism.

How is Eye Pterygium Diagnosed?

An eye exam will be given to test how well you can see. The eye doctor will also examine the eyes using special equipment to visualize the cornea and conjunctiva to assess the pterygium. Diagnostic imaging and photographs may also be helpful in determining the severity of the condition.

How is Pterygium Eye Treated?

For patients with mild pterygium, conservative treatment with eye drops and glasses or contact lenses may be required. Periodic follow-up may be necessary to monitor the lesions. For patients with a pterygium that is growing onto the central cornea, causing significant eye irritation and pain, or reducing the vision due to induced astigmatism, surgical removal of the pterygium may be required. Some patients may require the excision of both a nasal and temporal pterygium in the same eye at the time of surgery. Modern techniques for the removal of pterygium are very successful. However, there is a 10% chance that the pterygium may grow back, and the pterygium surgery may need to be repeated in the future. Surgical therapy may include one or more of the following:

• Pterygium Excision – The pterygium growing onto the cornea is removed. The underlying corneal surface is polished until an excellent cosmetic result is noted during surgery.
• Use of Mitomycin C– After removal of the pterygium, this medication may be applied to the area of the previous pterygium for 30-120 seconds. This reduces the rate of recurrence.
• Use of Amniotic Membrane Tissue– After removal of the pterygium, a special membrane tissue may be glued onto the area of the previous pterygium. This also has been shown to reduce the rate of recurrence.
• Use of Conjunctival Autograft– For advanced or recurrent pterygium, a small flap of healthy conjunctiva from the superior part of the eye may be used to cover the area of the previous pterygium. This also has been shown to reduce the rate of recurrence.

Contact Us Today for Pterygium Treatment

At Dean McGee Eye Institute, Oklahoma City patients can receive premier pterygium treatment. If you’re suffering from pterygium, we can help. Our team can diagnose the severity of your pterygium and enact a precise treatment plan that will give you the relief you need. We believe taking care of your eyes is an honor and privilege. Your doctor will further discuss with you the risks, benefits, and alternatives for managing your pterygium. Contact us today to schedule an appointment.