Studies on influence of capsular tension ring (CTR) on intraocular lens (IOL) implantation following phacoemulsification in cataractous dogs

The objective of the present study was to study the efficacy of implantation of hydrophobic acrylic foldable intraocular lens (IOL) following Capsular Tension Ring (CTR) placement in decreasing the occurrence of posterior capsular opacification (PCO) after phacoemulsification in cataractous dogs. Six client-owned dogs with mature cataract were selected for the study. In all animals, any ophthalmic or systemic concurrent disease was excluded prior to selection for the study. The eyes were randomly selected to receive IOL in association with CTR. Clinical evaluations were conducted on day 0, 1st, 3rd, 7th, 14th, 21st, 30th, 60th, 90th, 120th, 150th, 180th and 210th day. The results showed more inflammatory response, although among the parameters evaluated, solely the posterior synechiae and glaucoma were observed predominantly in the eyes. However, only 16.67% of PCO recorded in the eyes at the end of study period. These results suggest that the CTR can be useful in the prevention of the post-operative capsular opacities, with minor complications.