A structural constituent of eye lens. Acts upstream of or within lens fiber cell differentiation. Located in cytoplasm and nucleus. Is expressed in several structures, including sensory organ; skeleton; and tarsus. Used to study cataract 2 multiple types and cataract 4 multiple types. Human ortholog(s) of this gene implicated in cataract 4 multiple types and cataract 7. Orthologous to human CRYGD (crystallin gamma D). [provided by Alliance of Genome Resources, Apr 2022]