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When you try to keep your eyes focused on a rocket as it ascends you contract the?
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When you try to keep your eyes focused on a rocket as it ascends you contract the?

User TimChang
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The ciliary muscles in the eye contract to increase the thickness of the lens, but this is actually a change from distance viewing to close viewing, so the ciliary muscles are relaxing to let you view at a greater distance.

User Powdahound
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