Oxygen transmissibility of disposable hydrogel contact lenses

CLAO J. 1991 Jan;17(1):62-4.


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.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Contact Lenses, Hydrophilic*
  • Disposable Equipment
  • Optics and Photonics
  • Oxygen*
  • Permeability


  • Oxygen