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The art of vision......experience the extra time and care we take

presbyopia

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EYE-TITLE

The eye with Presbyopia.

The crystalline lens is elastic and is able to change its shape thus altering its focusing power. When we read the muscles contract and the lens becomes more curved thus we change focus from distance to near. This process is automatic, we are never aware of any muscular effort taking place.

However as we age the ability of the lens to change shape decreases, (although the focusing muscles work perfectly well) making close up objects (books, newspapers etc.) difficult to see.
 
This is called presbyopia and usually starts showing signs by your early to mid forties. Presbyopia is a progressive condition that gets worse with increasing age. So although distance vision usually remains good, reading and close vision become increasingly difficult, making us more reliant on our reading spectacles
the older we get.