![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Pterygium_Slitlamp.jpg/640px-Pterygium_Slitlamp.jpg&w=640&q=50)
Pterygium
Winglike triangular membrane / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about pterygium?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
A pterygium (pl.: pterygia or pterygiums) is any wing-like triangular membrane occurring in the neck, eyes, knees, elbows, ankles or digits.[1]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Pterygium_Slitlamp.jpg/640px-Pterygium_Slitlamp.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Look up pterygium in Wiktionary, the free dictionary.
The term comes from the Greek word pterygion meaning "wing".