Topical antimetabolites such as mitomycin-C or triethylene thiophosphamide have been routinely used as an adjunctive therapy after pterygium removal surgery to decrease the likelihood of recurrency.
May be complicated with corneal or scleral thinning, ulceration and necrosis especially when bare scleral technique is applied.
Clinical Features
Symptoms: may be asymptomatic or associated with ocular irritation
Signs:
Scleral thinning with trans-sclerally visible choroid
Hyperemia of the overlying conjunctiva
May progress to scleral perforation
Management
Observation, if asymptomatic and no evidence of perforation.
Surgical patch grafts to reinforce the thinning sclera.