In cataract surgery, the cataract is removed by means of ultrasound and replaced with a plastic lens. The results restore a clear view and often make reading glasses completely redundant. However, years later, surgery can lead to a renewed clouding of vision. Vision may blur, and many patients have bright light problems and glare. Even if it looks as if the cataract will come back, this is no offspring. What actually occurs is a thickening of the lens capsule that holds the artificial lens. From a medical point of view, this is called opacification of the posterior lens capsule.
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This thickening of the lens capsule occurs on the back, which means that natural lens cells grow across the back of the artificial lens. These cells sometimes lag behind after cataract surgery, causing problems with the light entering the eye and therefore problems with your vision.
Laser cataract surgery treatment
Lasers are energy beams that can be targeted very precisely. Today, technology is increasingly being used to correct patients’ vision after cataract surgery. The YAG laser is a focused laser with very low energy levels and is used to cut away a small circular area in the lens capsule that allows light to enter the back of the artificial lens. A portion of the lens capsule is retained to hold the artificial lens in place but removes enough thickened cells to bring the light to the retina.
The procedure is quick and painless and usually takes about fifteen minutes. The actual laser treatment can take only five minutes. The laser uses a wavelength that can’t be seen, but there is a light that you may notice that helps the doctor recognize what he is doing. Every laser shot is over in a fraction of a second, and you should not feel anything, but you may notice a few flashing lights when the laser fires.