The machine measures the eyeball's degree of 'curvature'.
a disease that can cause 'curvature' of the spine
The lenses have different 'curvatures'.
(..) .. Which is not to say that Rita doesn't possess a beauty... .. ...worthy of a Shakespeare sonnet or a BotticeIIi painting. .. The curvature of her buttocks... .. ...and the sweII of that magnificent bosom! .. So fuII, so sumptuous.... .. (..)1999 Wild Wild West