The fleshy growth on your eye that won't go away alone
In short: Known as "surfer's eye," pterygium is a benign but persistent triangular growth of tissue that creeps across your eyeball. While it often starts as a minor irritation caused by the elements, it can eventually reshape your cornea, permanently altering your vision if left unchecked.
Pterygium is a fleshy, pinkish growth of the conjunctiva—the mucus membrane covering the front of the eye. It typically begins near the nose and is characterized by fibrovascular proliferation and elastotic degeneration of collagen. While it is a benign growth, it is often associated with long-term exposure to UV light, dust, wind, and dry climates. Research suggests it is more common in men than women, in people living closer to the equator, and as individuals age. Some evidence also points toward genetic factors as a contributing cause. The growth progresses toward the cornea, where it can cause significant mechanical and optical issues. As it advances, it can pull on the cornea, changing its shape and inducing astigmatism. In advanced cases, it may obscure the optical center of the cornea or cause permanent scarring. Clinical studies in Nepal have shown that patients with pterygium exhibit significantly lower tear film break-up times and lower Schirmer II test values compared to healthy controls, indicating a correlation with dry eye parameters.
Because a pterygium will not resolve on its own, surgery is the only definitive removal method. Ophthalmologists typically perform these procedures when the growth causes severe irritation, affects vision, or is cosmetically distressing. During surgery, the abnormal tissue is removed and the resulting gap is patched using either a conjunctival autograft—tissue taken from behind the upper eyelid—or a donated amniotic membrane graft from a placenta. Post-operative care is critical; while modern techniques are reducing recurrence rates (estimated between 2% and 15% in some reports), failure to use prescribed steroid drops or continued sun exposure can lead to the growth returning.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: What Is Pterygium (Surfer’s Eye)?
- Also: Pterygium (eye)
- Also: Pterygium - Overview
To cite this card, link to https://intellectplus.co.uk/app/health-pterygium-eye.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Eyes & vision · More in Health · Latest · A–Z · All topics
