Abstract
PurposeThis study describes efficiency of diagnostic, image-based, and impression-based fitting methods by eye care providers who prescribe scleral lenses (SL) for patients with keratoconus. MethodsAn electronic survey was distributed to eye care providers with an interest in SL fitting. Demographic data including practice modality, country of residence, and fitting volume were collected. Efficiency of each fitting method (diagnostic, image, and impression-guided) was queried including time required for initial evaluation, number of lenses ordered, and number of office visits required. Practitioners with access to image and impression-based technology were also asked time required to acquire data and to estimate the percentage of time a lens could be manufactured from the initial images or impressions. Results423 practitioners who prescribe SL for patients with keratoconus reported completing a median [IQR] 100 [280] SL fittings. There was no difference in the median time required for initial evaluation (30 min; p = 0.5) or median number of lenses ordered during the fitting process (2 lenses; p = 0.2) between diagnostic, image-based, or impression-based SL fitting methods. Median time to acquire initial images was 10 [7] minutes and 15 [10] minutes to obtain impressions. Images obtained were adequate to order an initial lens 80 [45]% of the time while initial impressions were adequate 90 [40]%. ConclusionIn this study, practitioner-reported efficiency of SL fitting was similar between diagnostic, image-based and impression-based methods for patients with keratoconus.
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