Repeated Medical PG Question- 87

 

#OPHTHALMOLOGY(NEET-PG)

True statement about given condition of eye except:

A. Arise from any part of conjunctiva

B. Can cause Astigmatism

C. Surgery is treatment of choice

D. UV exposure is risk factor

Answer. A. Arise from any part of conjunctiva

Given condition is Pterygium

-Pterygium is a non- cancerous (non-neoplastic) growth of conjunctiva.

-Characterized by a wing-shaped fold of conjunctiva upon the cornea from either side within the interpalpebral fissure.

-Pterygium is always situated in the palpebral aperture.

-Pathologically Pterygium is a degenerative & hyperplastic condition of conjunctiva.

-The subconjunctival tissue undergoes elastotic degeneration & proliferates as vascularised granulation tissue under the epithelium, which ultimately encroaches the cornea.

-The corneal epithelium, Bowman’s layer & stroma are destroyed.

Etiology & Clinical features

-More common in people with excess outdoor exposure to sunlight (UV rays) dry, heat, high wind & abundance of dust.

-Clinically, presents as a triangular fold of conjunctiva encroaching the cornea in the area of palpebral aperture, usually on the nasal side.

-Other findings are stocker’s line (deposition of iron).

Pterygium is an asymptomatic condition in the early stages, except for cosmetic intolerance.

-Visual disturbance or corneal astigmatism may occur.

-Visual disturbances are due to encroachment of pterygium on pupillary area or corneal astigmatism.

-Occasionally diplopia may occur due to limitation of ocular movements.

Treatment

-Asymptomatic pterygium which is not progressive is best left alone.

-Surgical excision is the only satisfactory treatment.