Pterygium
Pterygium refers to any winglike triangular membrane occurring in the neck, eyes, knees, elbows, ankles or digits.[1]
In the eye, a pinguecula is called a pterygium if it invades the cornea.
The term comes from the Greek word pterygion meaning "wing".
Types
References
- ^ Parikh SN, Crawford AH, Do TT, Roy DR (2004). "Popliteal pterygium syndrome: implications for orthopaedic management". Journal of pediatric orthopaedics. Part B / European Paediatric Orthopaedic Society, Pediatric Orthopaedic Society of North America 13 (3): 197–201. PMID 15083121.