Garden State Veterinary Specialists, Tinton Falls, New Jersey, USA.
Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA.
Vet Ophthalmol. 2022 Sep;25(5):316-325. doi: 10.1111/vop.12978. Epub 2022 Mar 3.
To determine the effect of cumulative dissipated energy (CDE) on complications and visual outcome following cataract surgery in dogs.
Records of 182 canine eyes that had undergone cataract surgery.
Retrospective medical record review was conducted on dogs that underwent unilateral or bilateral elective cataract surgery by a single surgeon. Preoperative variables such as age, cataract duration, and pre-existing conditions were recorded. Intraoperative variables such as intraocular lens (IOL) status, phacoemulsification time, average power, irrigation fluid volume, and CDE were recorded. Postoperative complications and visual status at last follow-up were compared to these variables.
Eighty-six percent of dogs were visual in one or both eyes at last follow-up (LFU) examination. Median follow-up time was 186 days postoperatively. Eyes that developed glaucoma had a significantly greater mean CDE (77.73 ± 80.11) than eyes that did not develop glaucoma (49.21 ± 38.93). Eyes that remained visual at the LFU examination had a significantly lower mean CDE (48.31 ± 37.14) than eyes that were blind at LFU (82.05 ± 82.73). Significantly lower mean CDEs were found in diabetic eyes, younger eyes, early-operated eyes (<1 month duration), and eyes with preoperative lens-induced uveitis.
Higher CDE may be associated with an increased risk of postoperative glaucoma and loss of vision in dogs. Cumulative dissipated energy may be a useful prognostic indicator for success of canine cataract surgery.
确定累积耗散能（CDE）对犬白内障手术后并发症和视力结果的影响。
对 182 只接受白内障手术的犬的记录进行了回顾性医学记录审查。
对由一位外科医生进行单侧或双侧选择性白内障手术的犬进行了回顾性医疗记录审查。记录了术前变量，如年龄、白内障持续时间和先前存在的疾病。记录了术中变量，如人工晶状体（IOL）状态、超声乳化时间、平均功率、冲洗液量和 CDE。将术后并发症和最后一次随访时的视力状态与这些变量进行比较。
86%的犬在最后一次随访（LFU）检查时在一只或两只眼中有视力。术后中位随访时间为 186 天。发生青光眼的眼睛的平均 CDE（77.73±80.11）明显大于未发生青光眼的眼睛（49.21±38.93）。在 LFU 检查时保持视力的眼睛的平均 CDE（48.31±37.14）明显低于在 LFU 时失明的眼睛（82.05±82.73）。在糖尿病眼中、年轻眼中、早期手术（<1 个月持续时间）和术前晶状体诱导性葡萄膜炎的眼中，发现 CDE 明显降低。
较高的 CDE 可能与犬白内障手术后青光眼和视力丧失的风险增加有关。累积耗散能可能是犬白内障手术成功的有用预后指标。
