Higher frequencies are lost first. Presbygusia Age-related changes in taste. Presbyopia Age-related changes in eyesight. The lens hardens and loses its ability to change shape and focus. The condition of being old, state of old age characteristic of the later years of the lifespan.
Senescence is universal, intrinsic, progressive, and deleterious.
The degeneration of the macula, which provides the structural basis for high visual acuity. Somatic Mutation Successful Aging Superoxide Dismutase Antioxidant enzyme. They shrink and shed with each cell division. Their length gives some indication of the number of divisions a cell has undergone. Trabecular Bone Interior part of bone.