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The aim of the study was to evaluate the effect of care solutions on contact lens in vivo wettability using Doane's interferometric technique.

Thirteen subjects (aged 26.6 ± 6.3-years) participated for contact lens wettability evaluation after soaking in five care solutions namely Opti‐Free EverMoist (now called puremoist), Opti‐Free Express (Alcon), COMPLETE (AMO), ReNu and Biotrue (Bausch & Lomb). A new pair of lenses was soaked in the solutions for eight hours (prior to wear) or taken directly from pack solutions (as control) and worn by the subjects. The total number of pairs of lenses tested was 13 by six (78 lenses; 13 pairs of lenses wetted in five care solutions plus the pack solution). Doane's interferometer was used to capture images of the pre‐lens film on a single type of contact lens, Acuvue Oasys (Johnson & Johnson). The lens in vivo wettability was evaluated after 15 minutes and …