Evaluating Rotational Stability of an Extended Depth of Focus Toric Intraocular Lens Using a Slit Lamp and Image-Based Analysis

Autor:	Helga P Sandoval, Eric D. Donnenfeld, Kerry D Solomon, Richard Potvin, Stephen G. Slade, Stephen S. Lane
Rok vydání:	2020
Předmět:	Extended depth of focus medicine.medical_specialty Slit lamp genetic structures Orientation (computer vision) business.industry medicine.medical_treatment Intraocular lens Cataract surgery eye diseases law.invention Lens (optics) 03 medical and health sciences Ophthalmology 0302 clinical medicine law 030221 ophthalmology & optometry medicine sense organs Rotational stability business 030217 neurology & neurosurgery Image based
Zdroj:	Clinical Ophthalmology. 14:2405-2410
ISSN:	1177-5483
DOI:	10.2147/opth.s272240
Popis:	Purpose To evaluate the rotational stability of a toric extended depth of focus (EDOF) intraocular lens (IOL), using either slit lamp evaluation or image-processing software. Setting Three clinical practices in the USA. Design Prospective unmasked randomized clinical trial. Methods Subjects presenting for routine cataract surgery that were interested in improved near vision received toric EDOF lenses (TECNIS Symfony® Toric) in both eyes. The measures of interest in the current analysis were the change in orientation of the IOL between 1 day, 1 month and 3 months postoperative. Orientation was measured at the microscope on the day of surgery, and with the slit lamp at all other visits. Day 1, 1-month and 3-month images of the lens orientation were captured with a slit lamp camera. Differences in orientation were recorded and analyzed. Results A total of 150 eyes had IOL orientation data available. Image analysis showed mean absolute lens orientation changes from 1 day to 1 month and 3 months of less than 2 degrees. The percentage of lenses exhibiting rotation of ≤5 degrees between any measured time points was 97% or higher. Results were similar, but significantly more variable, when IOL orientation was measured at the slit lamp. Conclusion The toric EDOF lens evaluated here demonstrated rotational stability that exceeded the prior ANSI standard. The best method to determine IOL orientation changes was through image analysis. .
Databáze:	OpenAIRE
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