title: Peripheral curve design and the tear pump mechanism of soft contact lenses.
abstract: The role of the peripheral curve of a soft lens in the supply of oxygen to the cornea via the tear pump mechanism is considered. A group of 18 patients was optimally fitted with spherical DuraSoft lenses with and without peripheral curves; the absence of the peripheral curve was not found to affect adversely the physiological response of the cornea as determined by pachometric changes in central corneal thickness.
mesh_terms: D003263:Contact Lenses, Hydrophilic / Q000592:standards*; D003315:Cornea / Q000473:pathology / Q000502:physiology*; D003316:Corneal Diseases / Q000503:physiopathology; D004487:Edema / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D013666:Tears / Q000502:physiology*