1. Codex of the eye, Manuscript D (circa 1508).;da Vinci;Am J Optom,1953
2. A contact lens.;Fick;Arch Ophthalmol,1888
3. Sattlers veil.;Dallos;Br J Ophthalmol,1946
4. Importance of atmospheric oxygen for maintenance of the optical properties of the human cornea.;Smelser;Science,1952
5. The minimal precorneal oxygen tension to avoid corneal edema.;Holden;Invest Ophthalmol Vis Sci,1984