title: Spectral transmittance of tinted hydrogel contact lenses.
abstract: The visible light and ultraviolet (UV) radiation transmission was measured for four different tints from two contact lens companies. It was found that luminous transmittance ranged from 60 to 82% and mean UV transmission from 15 to 74% for the lenses under investigation. Differences in luminous transmittance between the two lenses of each tint evaluated were generally within 1%, which was also the approximate accuracy of the technique.
mesh_terms: D003116:Color; D003263:Contact Lenses, Hydrophilic; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D008027:Light; D011092:Polyethylene Glycols; D013053:Spectrophotometry
chemical_list: D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D011092:Polyethylene Glycols