September 2019


Journal of Cataract & Refractive Surgery
In the journal: September 2019

Results from the U.S. cohort of the HORIZON trial: A randomized study of a Schlemm’s canal microstent for reduction of IOP in primary open angle glaucoma

Jason Jones, MD, Douglas Koch, MD, Steven Vold, MD, Cathleen McCabe, MD, Douglas Rhee, MD, Richard Lewis, MD, Stephen Smith, MD, Quang Nguyen, MD, Thomas Samuelson, MD, for the HORIZON U.S. investigators
Stenting of Schlemm’s canal in combination with cataract surgery resulted in a significant reduction in diurnal IOP, as well as reduced medication use, compared to phaco alone in U.S. patients with mild to moderate primary open angle glaucoma (POAG) who were part of the HORIZON trial. Of the 38 clinical centers that were part of the prospective, single-masked, randomized controlled clinical trial, 26 sites were in the U.S. Investigators in this study evaluated the safety and efficacy of the Hydrus Microstent (Ivantis) to reduce diurnal IOP and medications among the U.S. cohort. A total of 219 eyes were randomized to receive the microstent in combination with cataract surgery and 112 eyes received phaco alone, serving as a control. Diurnal IOP was reduced by 20% or more in 78.5% of eyes in the microstent group compared to 54.5% of control group eyes. More than 78% of eyes in the microstent group were medication-free at 24 months of follow-up, compared to 39.2% in the phaco group. The mean change in number of medications between the microstent and control group was –1.2 ± 0.9 and –0.8 ± 1.1, respectively.

Comparative meta-analysis of toric intraocular lens alignment accuracy between image-guided system versus manual marking in cataract patients

Fengqi Zhou, MD, Wu Jiang, MD, Zhuoling Lin, MD, Xiaoyan Li, MD, Jing Li,
Haotian Lin, MD, Weirong Chen, MD, Qiwei Wang MD

A meta-analysis of toric IOL alignment comparing accuracy of image-guided technology with manual marking found use of an image-guided system resulted in better alignment accuracy, a smaller difference vector, and reduced postop astigmatism. Five studies totaling 257 eyes were included in this analysis. Studies were assessed based on methodological quality from a modified QUADAS-2 tool; continuous variables were assessed with weighted mean differences and dichotomous variables were assessed with an odds ratio.

Virtual-reality performance correlates significantly with real-life cataract surgical performance

Mads Jacobsen, MD, Lars Konge, PhD, Daniella Bach-Holm, MD, Morten la Cour, Dr Med, Lars Holm, MD, Klavs Højgaard-Olsen, MD, Hadi Kjærbo, MD, George Saleh, FRCS, Ann Sofia Thomsen, MD
Virtual reality simulators are increasingly being used for surgical training purposes, but how the skills demonstrated with these systems correlate with real-world surgical performance has not been widely documented. According to the investigators, there is a need for standardized, unbiased assessment tools in lieu of human raters. A prospective study evaluated 19 cataract surgeons with varying experience from nine ophthalmology departments in Denmark. Real- world phaco cataract surgery was videoed and surgeons also took a validated test with the Eyesi Surgical (VRmagic) simulator. The recorded surgeries were scored with the objective structured assessment of cataract surgical skills (OSACSS) system by masked raters. According to the analysis, there was a significant correlation between surgeons’ Eyesi Surgical scores and their mean OSACSS scores.

Journal of Cataract & Refractive Surgery In the journal: September 2019 Journal of Cataract & Refractive Surgery In the journal: September 2019
Ophthalmology News - EyeWorld Magazine
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