The eye lens is the only tissue in the organism where to date no spont
aneous tumors have been described. In pathologic (cataractous) lenses,
however, several abnormal cell growths have: been described. General
tissue properties of these cell growths (morphology, proliferation, fo
rmation of cell masses, etc.) are in accordance with characteristics o
f benign tumors in other tissues, and can therefore be considered as b
enign lens tumors.