a doubly convex, transparent body in the eye, situated behind the iris, that focuses incident light on the retina.
Origin of crystalline lens
First recorded in 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for crystalline lens
a biconvex transparent elastic structure in the eye situated behind the iris, serving to focus images on the retina
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012