PTERYGIUM

Miss. AYESHA KAZMI OTC STUDENT LRBT 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.

Treatment

1. 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.

Precautions