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TL Kaiura, AM Cotliar, GJ Florakis; Night Vision Disturbances With Multifocal Intraocular Lenses . Invest. Ophthalmol. Vis. Sci. 2002;43(13):1518.
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Purpose:Night vision disturbances such as glare and halos have been noted by patients following cataract extraction with multifocal intraocular lens implantation. Questionnaires are only subjective methods of assessing image degradation. The Night Vision Recording Chart has been described as a method for quantifying these disturbances under non-pharmacologic large-pupil conditions. In this study we evaluate image degradation in patients receiving multifocal intraocular lenses. Methods:Night vision disturbances were recorded in 26 eyes of 18 patients who underwent cataract extraction and multifocal intraocular lens placement using the Night Vision Recording Chart. Pre-operative and 3 month post-operative evaluations were performed. Results:There was no significant difference in image degradation under photopic conditions preoperatively vs. postoperatively (p=0.132). Postoperatively, image degradation increased significantly in scotopic conditions (p=0.040) in patients with multifocal intraocular lenses as compared to photopic conditions. When tested with best corrected visual acuity, there was a significant increase in night disturbances postoperatively after multifocal lens implantation as compared to preoperative scotopic conditions (p=0.008). Conclusion:The Night Vision Chart is a simple, convenient method of monitoring night vision disturbances in patients both preoperatively and postoperatively following multifocal intraocular lens implantation.
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