Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance
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10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits

 

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Posters

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Objective evaluation of red reflex intensity and stability between nearly-collimated beam and focused-beam microscope illumination systems for cataract surgery

Poster Details

First Author: R. Dimalanta UNITED STATES

Co Author(s):    D. Lubeck                    

Abstract Details

Purpose:

To develop testing techniques and criteria for the comparison of the red reflex produced by the illumination systems of ophthalmic surgical microscopes with nearly-collimated beam vs. focused-beam illumination and the effect of the red reflex on the quality of illumination for cataract surgery.

Setting:

Center for Minimally Invasive Surgery, Mokena, IL, USA

Methods:

This evaluation consisted of analysis of postproduction surgical video of red reflex intensity and range (or stability). Microscopes with a nearly-collimated beam illumination system and a focused-beam illumination system were assessed. A novel application of a video imaging program allowing measureable analyses of viewing quality and red intensity quantification is demonstrated. Light intensity, magnification, and video (and image) calibration were standardized.

Results:

Red reflex intensity and stability were greater with the nearly-collimated microscope illumination system in both video observation and postproduction image analyses.

Conclusions:

An innovative method in creating testing criteria/techniques for microscope illumination systems was demonstrated. The microscope with nearly-collimated illumination was observed to produce a more intense and more stable (wider range) red reflex than the focused beam microscope. Quantitative evaluation of red channel measurements from video capture favor near-collimated over focused-beam microscopes.

Financial Disclosure:

One or more of the authors is employed by a forNONEprofit company with an interest in the subject of the presentation, One or more of the authors receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented

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