Q. How Does a Pterygium Develop?

Pterygium develops when cumulative UV-B exposure damages the limbal stem cells — the specialized cells at the corneo-conjunctival junction responsible for maintaining a healthy corneal surface. Over time, this damage triggers abnormal fibrovascular tissue proliferation that slowly advances across the cornea. In Korea, where outdoor activity is common and air pollution contributes to ocular surface irritation, pterygium is not uncommon — particularly in older adults in areas like Yeongdeungpo, Guro, Gwanak, and Gasan who have spent years working outdoors.

❓ Frequently Asked Questions About Pterygium

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