define the term power of accommodation of human eye
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It is the maximum variation in the power of eye lens for focussing near or far objects clearly at retina.
For a young adult the power of accommodation is 4D . They loses power of accommodation at old age.
For a young adult the power of accommodation is 4D . They loses power of accommodation at old age.
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The process by which certain muscles (called ciliary muscles) function, to change the focal length of the eyes so that the image is clearly formed on the retina is called the accommodation of the eye. This will vary for near and distant objects and also for objects moving away or towards the eye. By adjusting the focal length, the eye is actually changing its lens power as well isn’t it? This is called the accommodating power of the eye. Literally. the eye’s power to change its power.
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