Rabu, 02 Mei 2012

INTRAOCULAR LENS ( IOL )


Once the cataract has been removed by cataract surgical method either phacoemulsification or extracapsular extraction, after the clouded lens is removed then a clear artificial lens is implanted into the empty lens capsule.
Clear artificial lens is implanted, known as an intraocular lens ( IOL ) is made of :
  • Plastic
  • Acrylic
  • Silicone
Some IOLs are rigid plastic and implanted through an incision that requires several stitches ( sutures ) to close. However, many IOLs are flexible, allowing a smaller incision that requires no stitches.

The surgeon can fold this type of lens and insert it into the empty capsule where the natural lens used to be. Once in place the lens unfolds to about 1 / 4 inch ( 6 mm ) in diameter.
An intraocular lens ( IOL ) requires no care and becomes a permanent part of eye patient.
Recent advances in IOLs include lenses that filter out ultraviolet light also known as blue-blocking lenses.

Other types of an intraocular lens provide multifocal vision being able to see things both near and at a distance. Multifocal lenses offer reasonably good near and distance vision.
However, vision at the intermediate range is sometimes less than satisfactory.

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