AGING CHANGES IN UVEAIRISWith age,

AGING CHANGES IN UVEA
IRIS
With age, loss of pigment from the epithelium is evident at the pupillary margin and on transillumination. Pigment deposition may be seen on the iris surface, anterior lens surface, posterior cornea, and trabecular uent meshwork. The dilator muscle becomes atrophic, and the sphincter muscle becomes sclerotic, making it more difficult to dilate the older pupil pharmacologically.

CILIARY BODY
Although the amount of connective tissue within the e the layer of ciliary muscle increases with age,there is no from significant correlation between loss of ciliary muscle erves contractile ability and age. Ciliary muscle contrac mpation does not diminish with age.The formation of ciliaqueous decreases with age and by age 80 is approxi idal mately 25% of what it was; however, the volume of the anterior chamber decreases by about 40%.