Presbyopia is a normal and expected consequence of the aging process. Beginning as you approach your 40's presbyopia occurs as the protein composition of the crystalline lens changes, making it harder and less flexible. When the crystalline lens loses its ability to flex, it is no longer able to change its shape and effectively bend light rays as sharply, and the ability to focus on near objects is diminished. Lasik eye surgery has no effect on your eye's focusing muscles or on the crystalline lens, so it does not correct ordinary presbyopia.
In July of 2007, the FDA approved the procedure of Monovision
Lasik eye surgery, also known as Laser blended vision ( Monovision Lasik vision correction involves correcting the dominant eye for farsightedness and the other eye for near sightedness. One of your eyes is set to see far objects well while the other is corrected to see near objects well. The brain fully adjusts to Monovision function in 6 to 8 weeks, ignoring the unfocused eye to give clear vision for both eyes. You must understand that monovision is a compromise that does not restore accommodation, but rather compensates for its loss, are most likely to adapt well to monovision. A survey done on Lasik patients using with the Monovision established that almost 85% of the patients found Monovision favorable enough and used it long enough. The remaining 15% found it uncomfortable and cannot get used to it and wanted to reverse the procedure by having the near eyes adjusted to complement the far eye.
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