Prevalence and outcome of lens capsule disruption in routine canine cataract surgery: A retrospective study of 520 eyes (2012–2019)

Author:

Andrews Amy L. M. M.1ORCID,Kafarnik Christiane1,Fischer Maria‐Christine1

Affiliation:

1. Queen Mother Hospital for Animals Royal Veterinary College Hawkshead Lane Hatfield AL9 7TA United Kingdom

Abstract

AbstractObjectiveTo investigate the prevalence and surgical outcome of lens capsule disruption (LCD) in dogs undergoing cataract removal.Animals studiedMedical records of 924 eyes undergoing phacoemulsification were analyzed retrospectively.ProceduresRoutine cataract surgeries with or without LCD were included. Any LCD other than routine anterior capsulorhexis was defined as LCD and classified according to location and etiology. Odds ratios (OR) were calculated for maintaining vision, implantation of an artificial intraocular lens (IOL), and enucleation.ResultsIn total, 520 eyes were included. A LCD occurred in 145 eyes (27.8%; 145/520) and affected the posterior (85.5%; 124/145), anterior (6.2%; 9/145), and equatorial lens capsule (4.8%; 7/145) and at multiple locations (3.4%; 5/145). The etiology of the LCD was spontaneous preoperative in 41 eyes (28.3%; 41/145), accidental intraoperative in 57 eyes (39.3%; 57/145), and planned in 47 eyes (32.4%; 47/145). Disruption did not increase the odds of enucleation (OR = 1.48, 95% confidence interval [CI] 0.56–3.67; p = .36). The presence of LCD significantly increased the risk of losing vision 1 year post‐operatively (OR = 8.17, 95% CI 1.41–84.93; p = .007) associated with retinal detachment. However, this was not present at 2 years follow‐up or in PCCC cases at any time point. An IOL was implanted in 108 eyes (108/145; 75.2%) with LCD and in 45/47 (95.7%) eyes with a PCCC.ConclusionIncreased surgeon awareness of possible intraoperative, accidental LCDs is important, as LCDs were relatively common and associated with increased odds for vision loss after 1 year in the present study. A prospective study investigating the causes of intraoperative, accidental LCD is warranted.

Publisher

Wiley

Subject

General Veterinary

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