title: Oxygen transmissibility of disposable hydrogel contact lenses.
abstract: We measured the central and mid-peripheral thicknesses of three "disposable" hydrogel contact lens designs of varying powers. These measurements allowed calculation of the areal average lens thicknesses (over a central 6 mm chord), which in turn allowed calculation of predicted oxygen transmissibility (Dk/L) for the lenses studied (using previously reported values for measured oxygen permeability [Dk] of these materials). Dk/L values for the disposable hydrogel lenses tested were found to range from 9 to 17 x 10(-9) cm mL O2/sec mL mmHg.
authors.affiliation: Jules Stein Eye Institute, UCLA School of Medicine.
authors.forename: B A
authors.initials: BA
authors.lastname: Weissman
authors.forename: S D
authors.initials: SD
authors.lastname: Schwartz
authors.forename: D A
authors.initials: DA
authors.lastname: Lee
mesh_terms: D003263:Contact Lenses, Hydrophilic; D004209:Disposable Equipment; D055095:Optics and Photonics; D010100:Oxygen; D010539:Permeability
chemical_list: D010100:Oxygen