Original Article
Comparison on the efficacy of transscleral cyclophotocoagulation with two different laser parameters
Yang Fu, Xiaoqiong Xiang, Mingshui Fu, Min Tang
Published 2018-08-25
Cite as Chin J Ocul Traum Occupat Eye Dis, 2018, 40(8): 565-569. DOI: 10.3760/cma.j.issn.2095-1477.2018.08.002
Abstract
ObjectiveTo compare the efficacy of transscleral cyclophotocoagulation with two different laser parameters.
MethodsThe data of 59 eyes of 59 cases with glaucoma from Feb. 2016 to Feb. 2017, who underwent transscleral cyclophotocoagulation were analyzed retrospectively. All cases were divided into two groups randomly. Group A used lower power with longer pulse time and group B used normal parameters. Intraocular pressures (IOP), best-corrected visual acuity (BCVA), anti-glaucoma medications usage and complications were observed and compared between the two groups.
ResultsThe baselines of the two groups were similar. The surgical success was defined as IOP between 6 and 21 mmHg (1 mmHg=0.133 kPa), or at least 30% reduction. Group A, 28 cases were followed up for (11.2±0.5) months and the final success rate was 80.0%. Group B, 31 cases were followed up for (11.1±0.5) months and the final success rate was 78.6%. The difference of success rate was not significant between the two groups (χ2=0.017, P=0.895). The BCVA was 0.53±0.44 (logMAR) in group A, which was better than 0.67±0.57 in group B (t=-2.240, P=0.029). At final follow-up time, the kinds of anti-glaucoma medications were 1.1±0.7 in group A and 1.2±0.8 in group B. The difference was not significant between the two groups (t=-0.480, P=0.634). The valuations for pain were more mild in group A than those in group B (χ2=10.510, P=0.005). The differences in other complications were not significant between the two groups.
ConclusionCompared with conventional diameters, transscleral cyclophotocoagulation with lower power and longer pulse time may reduce IOP similarly with better visual acuity and fewer complications.
Key words:
Cyclophotocoagulation, transsclera; Intraocular pressure; Glaucoma
Contributor Information
Yang Fu
Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai 200080, China
Xiaoqiong Xiang
Mingshui Fu
Min Tang
