Retrospective
Evaluation of Surgical Outcomes in Cats With Glaucoma Following Diode Endoscopic Cyclophotocoagulation
Emily N. Perry, Mayara Galetti, Evelyn Hall, William M. Irving, Cameron Whittaker, Kelly Caruso, Paul M. G. McCarthy, Cassandra Bliss ABSTRACT
Objective
To describe the post‐operative IOP control and visual status up to 12 months following endocyclophotocoagulation (ECP), and to characterize post‐operative complications following the use of ECP for the treatment of glaucoma in cats.
Methods
A retrospective analysis of glaucomatous cats treated with ECP between 2020 and 2025 was performed. Signalment factors, individual case factors, and surgical factors were assessed and compared against surgical outcomes.
Results
Twenty‐two eyes from 15 cats met the inclusion criteria. Causes of glaucoma included primary open‐angle glaucoma, Feline aqueous humor misdirection syndrome, chronic uveitis, lens subluxation, anterior segment dysgenesis, and toxic anterior segment syndrome following phacoemulsification. All cats received a lensectomy via phacoemulsification or intracapsular lens extraction, followed by ECP. Successful IOP control (≤ 30 mmHg) was achieved in 86% and 94% of cases at three months and one year. Vision was present in 77% and 71% of cases at three months and one year. Of the eyes that were visual pre‐operatively, vision was retained in 93% and 100% of cases at three months and one year. There was no effect of signalment on IOP control or vision retention at any time point evaluated. The most common post‐operative complication was corneal ulceration, occurring in 36% of cases.
Conclusions
ECP combined with lensectomy appears to be a safe and successful procedure for short‐ to medium‐term vision preservation and long‐term control of IOP in cats with glaucoma.