[Age-related changes in the cells of the eye]

Histochemical investigations have shown that different eye changes take place in different eye structures. This speaks about heterotrophy in the aging of the eye. Labile (epithelium of the cornea and paraequatorial zone of the lens capsule) and stable (epithelium of the central zone of the lens capsule) cells show similar reaction on aging by preserving a high level of nuclear DNA content. In static cells (cellular element of the retina) the DNA content decreases with age.