1. Micrometer-Scale Contact Lens Movements Imaged by Ultrahigh-resolution Optical Coherence Tomography

    Micrometer-Scale Contact Lens Movements Imaged by Ultrahigh-resolution Optical Coherence Tomography

    Purpose To dynamically evaluate contact lens movement and ocular surface shape using ultrahigh-resolution and ultralong-scan-depth optical coherence tomography (OCT). Design Clinical research study of a laboratory technique. Methods Four different types of soft contact lenses were tested on the left eye of 10 subjects (6 male and 4 female). Lens edges at primary gaze and temporal and nasal gazes were imaged by ultrahigh-resolution OCT. Excursion lag was obtained as the distance between the lens edge at primary gaze and immediately after the eye was quickly turned either nasally or temporally. The inferior lens edges were imaged continuously to track vertical ...

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