Abstract
A recognized complication of strabismus surgery is the development of hypertrophic conjunctival scars over the operated-on muscle. Our standard treatment of these scars has been excision followed by corticosteroid eye drops, which results in a scar recurrence rate of 33%. Antimetabolic chemotherapeutic agents, such as mitomycin, can reduce posttraumatic scarring and vascularization of the ocular surface. We studied the use of mitomycin eye drops as an adjunct to standard treatment of hypertrophic conjunctival scars after strabismus surgery. Four patients were treated with adjunct mitomycin eye drops (0.2 to 0.4 mg/ml). Postoperative follow up ranged from 16 to 56 weeks. None of these cases showed significant scar recurrence. Mitomycin in the higher dosage caused mild superficial punctate keratitis after 8 days of use. Despite a lamellar sclerectomy in a patient treated with 0.2 mg/ml of mitomycin, there was no further clinically apparent loss of scleral tissue. The results of this pilot study suggest that topical mitomycin is a safe and effective adjunct to excision and corticosteroid eyedrops in the treatment of hypertrophic conjunctival scars after strabismus surgery.
Published Version
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