1. Oxygen permeable contact lenses: how convinced is the cornea?;Hill;Int. C. L. Clinic,1977
2. Can oxygen pass through PMMA?;Hill;Int. C.L. Clinic,1978
3. Oxygen permeability measurements: correlation between living-eye and - electrode-chamber measurements;Loshaek;Int. C. L. Clinic,1977
4. Oxygen update: nonhydrophilics;Hill;Int. C.L. Clinic,1981
5. The definition of thickness for a lens;Fatt;Am. J. Optom. and Physiol. Optics,1979