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im sure its when the lens either gets thicker or thinner to focus on near or far things


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Accommodation is when the shape of the lens in the eye changes to make sure that a clear image is still being reflected onto the retina when you're looking at far of near objects.


When you look at a near object, a lot of light refraction is needed, so the ciliary muscles contract & the suspensory ligaments slacken so that the shape of the lens becomes fat & rounded.


When you look as a far object, not a much light refraction is needed, so the ciliary muscles relax & the suspensory ligaments tighten, allowing the lens to become long & thin.


In this way, you continue to see a clear image whether you're looking at something in the distance or something nearby & this is accommodation.

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