ABSTRACT
In some animal species (such as birds and reptiles), the cornea can change its focal power (accommodate) by steepening (Land and Nilsson 2012). However, in the human eye, it was Thomas Young’s classic experiment involving submersing the eye in a solution (neutralizing most of the cornea’s refractive power), which first showed that the crystalline lens and not the cornea was the source of accommodation (Young 1801).
