The ageing eye” functional changes from cradle to grey A review

Ikoro, N.C.


Age affects the structure and functions of both eyes equally. With increasing age the eyes’ axial lengths increase, mean refracting power decrease, lens power decreases and visual acuity increases. Hyperopia increases, stabilize and then decreases but increases again from age 45 while myopia shows up from age 7 and increases linearly with increasing age till age 20 and then levels off. Accommodative amplitude, on the other hand, decreases with age while contrast sensitivity improves and is at its maximum between ages 20 and 30 after which it decreases as a function of age, colour vision and visual fields also diminish with age.

Keywords: Age, Visual Acuity, Refractive Error, Accommodation, Contrast Sensitivity.

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