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Temporal evolution of the corneal curvature in contact lens wearers
Author(s) -
Velasco J.,
Bermudez F. J.,
Jimenez del Barco L.
Publication year - 1996
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1046/j.1475-1313.1996.95000925.x
Subject(s) - contact lens , adaptation (eye) , lens (geology) , ophthalmology , optics , curvature , cornea , radius of curvature , materials science , optometry , physics , medicine , mathematics , mean curvature , geometry , mean curvature flow
Summary In the present work, we have measured the corneal radii in a group of 126 healthy subjects, studying the temporal evolution of these radii after adaptation to contact lenses of polyhydroxyethyl methacrylate with 55% hydration. We measured the horizontal and vertical radii before adaptation, as well as after 3, 6 and 9 months of wearing contact lenses. The decreases were not significant ( P < 0.05) in the corneal radii of these subjects; maximum decreases were reached the day after wearing contact lenses, with subsequent recuperation, such that at 9 months the decreases, though persisting, were minimal.