Programm                 "Degeneration und Regeneration– Grundlagen, Diagnostik und Therapie"

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A Pilot Study to Investigate Scattering Light in Patients with Silicon IOLs – Comparison of Sharp and Round Optic Edge Design

Walter S., Kollmann F., Lindner H., Behrens-Baumann W.
Department of Ophthalmology, Otto-von-Guericke Universitity, Magdeburg

Purpose: Since one decade foldable IOLs containing different material (silicon, acrylic, hydrogel) are available. Several studies showed a postoperative visual acuity equal to rigid intraocular lenses. However the photopic visual acuity is only one aspect of the broad visual spectrum. Although many patients have an excellent visual acuity, some suffer from increased glare and reduced mesoptic visual acuity. The additional evaluation of visual acuity under mesoptic and glare conditions allows therefore additional functional testing which compared more to a real life condition. In this pilot study we investigated intraocular scattered light in relation to the edge design of the IOL (sharp vs. round edge) by means of contrast sensivity and glare.
Results: In our Department 10 patients with monofocal, foldable silicon lenses on both eyes were included. On one side they received a rectangle shaped optic edge (CeeOn Edge 911A - Pharmacia GmbH) and of the other sinde they received a round shaped (AMO Phacoflex SI30NB - Allergan). All tests were performed 3 month post surgery (+ 2 weeks). The age of the patients (7 female, 3 male) was between 65 and 80 years (mean 71,5). The average visual acuity was 0.92 cum correctione. The Pelli-Robson-test (1m, 120 cd/m2 with and without glare) reveals no significant differences in con

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