ESCRS - PO0470 - Comparing Comfort Associated With Microscope Light Using Heads-Up 3D Visualization Or Conventional Microscopy In Cataract Surgery: Cool Study.

Comparing Comfort Associated With Microscope Light Using Heads-Up 3D Visualization Or Conventional Microscopy In Cataract Surgery: Cool Study.

Published 2023 - 41st Congress of the ESCRS

Reference: PO0470 | Type: Free paper | DOI: 10.82333/mqjt-fg23

Authors: Kévin PIERNE* 1 , Vincent GUALINO 1 , Anthony MANASSERO 2 , Sebastien BRUNEAU 3 , Aude COUTURIER 4 , Ramin TADAYONI 2

1CLINIQUE HONORE CAVE,MONTAUBAN,France, 2FONDATION OPHTALMOLOGIQUE ADOLPHE DE ROTHSCHILD,PARIS,France, 3FONDATION OPHTALMOLOGIQUE ADOLPHE DE ROTHSCHILD ,PARIS,France, 4APHP,PARIS,France

Purpose

To compare subjective levels of comfort and visual experiences related to microscope light in patients undergoing their first cataract surgery with topical anesthesia using a digital microscope (the NGENUITY® 3D visualization system) or a conventional microscope.

Setting

The COOL study was a prospective, randomized, single-blinded, parallel-group, bicentric, interventional study. The study was conducted at the Honoré Cave clinic in Montauban and Adolphe de Rothschild Foundation hospital in Paris. ClinicalTrials.gov Identifier: NCT05085314. This study was funded by Alcon: Investigator-Initiated study grant (IIT#63256331).

Methods

Patients were recruited between October 2021 and April 2022. The 129 patients enrolled were randomized to undergo cataract surgery with topical anaesthesia using either the NGENUITY® 3D visualization system (experimental group) or a conventional microscope (control group). Patients were masked of their treatment group allocation. Patients were interviewed within 1-2 hours of completion of surgery and asked to answer 4 questions from a standardized questionnaire using a numerical scale from 0 (No, not at all) to 10 (Yes, extremely).

The primary outcome was patients’ experience of glare associated with the microscope light during cataract surgery. Key secondary outcomes were patients’ subjective comfort related to the microscope light

Results

The experimental group reported significantly lower levels of glare; median levels [IQR] were 1.0 [0.0-4.0] for the experimental group versus 3.0 [0.0-6.0] for the control group (p=0.027) and higher levels of comfort; median ratings [IQR] were 8.0 [6.5-10.0] in the experimental group and 7.0 [5.0-9.0] in controls (p=0.026). There were no group differences in ratings of subjective pain or visual disturbances. Median microscope light intensity [IQR] was lower in the experimental group than controls; 3425.0 [2296.0-4300.0] Lux versus 24279.0 [16000.0-26500.0] Lux (p<0.0001), respectively.

Conclusions

Compared to conventional microscopes, the NGENUITY® 3D visualisation system allows lower levels of light exposure, resulting in significantly less glare and improved comfort in patients undergoing cataract surgery.