Comparison of conventional method of contact lens fitting and software based contact lens fitting with Medmont corneal topographer in eyes with corneal scar |
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| Affiliation: | 1. Elite School of Optometry, No. 8, GST Road, St. Thomas Mount, Chennai 600 016, India;2. Medical Research Foundation, Sankara Nethralaya, No. 41, College Road, Chennai 600 006, India;1. National Research Center “Kurchatov Institute”, Moscow, Russia;2. Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, Russia;3. Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia;4. Russian National Research Medical University named after N.I.Pirogov, Moscow, Russia;5. Lomonosov Moscow State University, Moscow, Russia;1. Ophthalmology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;2. School of Optometry, MCPHS University, Worcester, MA 01608, USA;3. Pharmaceutical Sciences, University of Colorado, Aurora, CO 80045, USA;4. School of Optometry, Indiana University, 800 East Atwater Avenue, Bloomington, IN 47405 USA;1. Department of Ophthalmology, 3 Quinze-Vingts National Ophthalmology Hospital, Paris;2. Center for Clinical Investigations INSERM 503, Quinze-Vingts National Eye Center, Paris;3. INSERM, U968, Paris, F-75012, UPMC Univ Paris 06, UMR_S 968, Institut de la Vision, Paris F-75012; CNRS, UMR_7210, Paris F-75012, France;4. Department of Ophthalmology, Ambroise Paré Hospital, AP-HP, UFR Paris-île de France Ouest, University of Versailles Saint-Quentin-en-Yvelines, Versailles, France |
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| Abstract: | PurposeTo compare conventional method of contact lens fitting with software based contact lens fitting using Medmont corneal topographer in eyes with nebular and macular corneal scars.MethodsFifteen participants who were diagnosed with nebular and macular scars were fitted with rigid gas permeable lenses using conventional method of contact lens fitting. During the lens dispensing visit, participants underwent Medmont corneal topography. Agreement between the two methods of contact lens fitting was studied.ResultsParameters of contact lenses which were concluded using conventional method was compared to that of software based fitting. Mean difference in base curve of contact lens between the two methods was 0.094 mm ± 0.147 mm (95% CI: +0.383 to ?0.194). Mean difference in diameter of contact lens between the two methods was 0.16 mm ± 0.172 mm (95% CI: +0.497 to ?0.177). Contact lens parameters that were achieved using two different methods of fitting showed good correlation. Correlation coefficients, as comparison of two methods in base curve and diameter were 0.96 (P < 0.05) and 0.94 (P < 0.05), respectively.ConclusionSoftware based contact lens fitting would be useful for contact lens practitioners to predict initial base curve of contact lens in corneal scars. |
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