1. The basis for corneal shape change during contact lens wear;Carney;Am J Optom Physiol Opt,1975
2. Current trends in modern orthokeratology;Dave;Ophthalmic Physiol Opt,1998
3. Orthofocus techniques;Jessen;Contacto,1962
4. Research in orthokeratology. Part III: results and observations;Kerns;J Am Optom Assoc,1976
5. Research in orthokeratology. Part IV: results and observations;Kerns;J Am Optom Assoc,1977