Prospective, randomized, eye-to-eye comparison of a novel silicone corneal shield vs conventional bandage contact lens after photorefractive keratectomy
Journal of Cataract & Refractive Surgery Aug 18, 2019
Hirabayashi KE, et al. - After photorefractive keratectomy, researchers compared uncorrected distance visual acuity (UDVA) and patient reported outcomes with a novel silicone corneal shield and a conventional bandage contact lens (BCL). For this prospective randomized cohort study, standardized bilateral wavefront guided or wavefront optimized photorefractive keratectomy on 25 myopes has been performed. Data reported that the mean logarithm of the minimum angle of resolution (logMAR) UDVA was 0.04 ± 0.16 in the Nexis group and 0.29 ± 0.22 in the BCL group at postoperative day 1. The mean logMAR UDVA was 0.09 ± 0.17 in the Nexis group and 0.23 ± 0.24 in the BCL group at postoperative day 7. At postoperative days 4 and 7, no statistically significant difference was found in the survey outcomes between the two groups. The authors concluded that the corneal shield of Nexis silicone is secure and efficient, with faster visual recovery and a trend towards faster epithelialization but maybe less comfortable than a conventional BCL.
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