PTERYGIUMMiss. AYESHA KAZMIOTC STUDENTLRBT SCHOOL OF OPHTHALMIC PARA MEDICINE
Definition Of Pterygium A pterygium is a fleshy growth that invades the cornea. It is an abnormal process in which the conjunctiva grows into the cornea.
Definition Of Pterygium It is a fibro vascular, triangular and degenerative condition of conjunctiva.
Types of Pterygium There are two types: 1. Progressive Pterygium: These types of pterygium are those which progress day by day. 2. Non Progressive Pterygium: Those which after limited growth has been occur than stop their generation.
Etiology The exact cause is not known. The probable causes are: i. Commonly occurs in people living in hot & dry climate. ii. Dusty atmosphere. iii. Common in outdoor workers. iv. Common in males. v. It may occur nasal than temporal side.
Symptoms Redness Irritation Dryness Tearing May cause decreased vision ( when it reaches the visual axis of cornea)
Sign Visible triangular fold of conjunctiva. Triangular shape with the apex, or head, extending onto the cornea.
Treatment1. Local: i. Lubricant eye drops. ii. Topical steroids for inflammation.2. Surgical: i. Surgical excision when the pterygium progressive towards the cornea.
Precautions Use sun glasses. Protect from sunlight Use eye goggles when working. (laborers, welders) Wash eye with water after work in sunlight.