Objective: To evaluate the postoperative visual outcome and complications of 25-gauge pars plana vitrectomy (PPV) via a lateral approach without proptosis of the globe in dogs.
Procedures: We reviewed the medical records of dogs diagnosed with giant rhegmatogenous retinal detachment (RRD) at Yokohama Animal Eye Clinic from 2016 to 2019 and treated by 25-gauge PPV. Medical records included signalment, follow-up time, etiology and duration of RRD, angle between the outermost trocar ports, immediate postoperative anatomic success rate, pre- and postoperative visual status, and postoperative complications.
Results: Seventy-two dogs (78 eyes, 13 breeds) were included. The most common breed was the Toy Poodle (48.6%), and the mean follow-up time was 690.6 days. The most common etiology of RRD was cataract surgery (46.2%). The mean angle between the outermost trocar ports was 71.4º. Immediate postoperative anatomic success was noted in all eyes. Vision was regained or maintained in 87.2% of eyes, and the mean time to return of vision was 28.5 days. Maintenance of vision until the last known follow-up was noted in 73.5% of eyes. The most common postoperative complication was glaucoma (40.3%), and glaucoma was the most common etiology of postoperative vision loss (88.9%).
Conclusion: Twenty-five gauge PPV via a lateral approach without proptosis of the globe is a successful method for treating canine giant RRD.
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