Ophthalmic measuring apparatus for determining {HEAD ~ the shape} of {TAIL ~ the cornea} of an eye 
Ophthalmic measuring apparatus for determining { HEAD ~ the shape } of { TAIL ~ the cornea } of an eye
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH