Contents
Small saucer-like excavations at the margin of the cornea caused by interruptions of the tear film and local dehydration of the cornea.
- Complication: Corneal perforation
Aetiology
Usually following processes which produce a paralimbal elevation:
Induce a localized break in the precorneal oily layer of the tears which, in turn, causes a localized dehydration and thinning of the cornea
- Pterygium surgery (M/C cause)
- Large filtration blebs
- Dermoids
- Scleritis
- Episcleritis
- Scarring after extraocular muscle surgery
- Severe conjunctival chemosis
Management
Punctal cauterization
To increase tear pooling over the affected area
Copious lubricant application:
For early resolution of dellen