azz Augenlaserzentrum Zentralschweiz

www.augenlaser.ch

American Society of Cataract & Refractive Surgery

www.eyenet.org

European Society of Cataract & Refractive Surgery

www.escrs.org

The International Society of Refractive Surgery

www.isrs.org

Stanford University School of Medicine

www.med.stanford.edu/school

Lens calculation page for medical doctors

www.augenklinik.uni-wuerzburg.de/uslab/iolfrmd.htm

Société Française d`Ophtalmologie

www.sfo.asso.fr

Vissum Corporacion Oftalmologica

www.vissum.com

Jack Holladay Eye Physician and Surgeon

www.docholladay.com