Conjunctiva Flashcards
1
Q
What is Pterygium
A
A triangular fibrovascular subepithelial ingrowth of degenerative bulbar conjunctival tissue over the limbus into the cornea
2
Q
Histology of Pterygium
A
elastotic degenerative changes in vascularized subepithelial stromal collagen
3
Q
Pterygium vs Pinguecula
A
Pterygium encroach onto cornea invading Bowman layer
Pseudopterygium- a band of conjunctiva adhering to an area of compromised cornea at its apex
4
Q
Symptoms of pterygium
A
- asymptomatic
- irritations, grittiness, dellen
- CL - edge lift
- vision obscured
- intermittent inflammation
- cosmetics
- limited ocular excursion
5
Q
Signs of pterygium
A
- cap(avascular halo-like zone at advancing edge), head, body
- Stocker line
- Fuchs islets -small discrete whitish flecks consisting of clusters of pterygial epithelial cells often present at the advancing edge
