What is presbyopia ? state its cause.
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ANSWER...
Presbyopia is caused by a hardening of the lens of your eye, which occurs with aging. As your lens becomes less flexible, it can no longer change shape to focus on close-up images. As a result, these images appear out of focus..
Presbyopia is an age-related process. It is a gradual thickening and loss of flexibility of the natural lens inside your eye.
Presbyopia is an age-related process. It is a gradual thickening and loss of flexibility of the natural lens inside your eye.These age-related changes occur within the proteins in the lens, making the lens harder and less elastic over time. Age-related changes also take place in the muscle fibers surrounding the lens. With less elasticity, it gets difficult for the eyes to focus on close objects...
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