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Abstract #112263 Published in IGR 24-3
Diode laser ablation of progressive pigmented iris lesions in 317 cats (356 eyes) appears overall safe and effective in decreasing progression of iris pigmentation
Fuchs AA; Giuliano EA; English R; Nadelstein B; Nadelstein BJournal of the American Veterinary Medicine Association 2024; 262: 117-124
OBJECTIVE: To describe a novel scoring system of feline pigmented iris lesions prior to utilization of diode laser ablation of progressive pigmented iris lesions and to retrospectively evaluate short- and long-term patient outcomes following transcorneal diode laser ablation. ANIMALS: 317 client-owned cats (356 eyes) were included. CLINICAL PRESENTATION: Records of cats undergoing diode laser ablation from January 2000 to December 2018 were retrospectively reviewed. A novel clinical grading system to describe severity of feline iris hyperpigmentation was developed. Recorded parameters included signalment, operated-upon eye, presurgical iris pigmentation score, intraocular pressure, visual status, postoperative complications, repeat laser surgery, patient status at last follow-up, time to death, and presumptive or known cause of death. RESULTS: Complications included corneal ulceration (25/356 [7%]), glaucoma (18/356 [5%]), uveitis (4/356 [1.1%]), and corneal edema (3/356 [0.8%]). Enucleation was performed in 12 eyes due to blindness and secondary glaucoma. Repeat laser due to continued progression of pigment was performed in 18.5% of eyes. Two study patients were euthanized due to presumptive metastatic disease. Of the 250 cats for whom confirmation was available via phone call or medical records, 240 (96%) were alive at 1 year. CLINICAL RELEVANCE: Diode laser ablation appears safe overall and may be effective in decreasing progression of feline iris pigmentation. Complication risks appear minimal.
1Virginia Veterinary Centers, Midlothian, VA.
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