1. Corneal modeling;Gormley;Cornea,1988
2. System for topographical modeling of anatomical surfaces;Gersten,1989
3. Imaging of the cornea;Dingeldein;Cornea,1988
4. Photographing apparatus for determining corneal radius;Kilmer,1974
5. Method and device for determining cornea surface topography;Karpov,1986