Explain about the physiological accommodation, Biology

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Explain about the Physiological Accommodation

Physiological Accommodation contractile power of the ciliary muscle required to change the focussing power of the eye by ID. Measured in Myodiopter.

In younger age both are equal. In old age the lens capsule becomes more stiff, hence the physical accammodation becomes less than the physiological (more muscle power is required to cause change in the diopteric power).

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