Are cones and rods in the eye actually hair?
No. But there are indeed many connections between the eye and our hair & fingernails.
The cornea of the eye is made of something almost identical to the keratin that is the basic "stuff" of hair and fingernails. In fact, the "k" in LASIK stands for "keratomileusis," which means "cornea carving" in its Greek etymology. You see the same "kera-" root word in many hair products, e.g. KeraNique, KeraCare, etc.
_Written by J. Trevor Woodhams, M.D. - Chief
of Surgery, Woodhams Eye Clinic
