pterygium   (TTS Sound)

The pterygium has 1 Senses.

• pterygium
• either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea; it arises from irritation of the pinguecula
• 目の鼻端から角膜に及ぶ結膜の2枚の厚い三角形の層のどちらでも