Upper and lower tear menisci on contact lenses
Purpose: To measure upper and lower tear menisci on contact lenses using real time optical coherence tomography (OCT). Methods: Both eyes of 20 adapted contact lens wearers were imaged when they wore two types of silicone hydrogel lenses, balafilcon A on one eye and galyfilcon A on the other eye. The height, radius, and area of upper and lower tear menisci were obtained before, immediately after, and 20 minutes after lens wear on two consecutive days. On a third visit, the lenses were switched between eyes and an investigative lubricant was instilled after 4 hours of lens wear. OCT images ...
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