As age increases, there will be some changes occurred to the natural or original crystalline lens that may leads to the occurrence of cataract, or a loss in the clarity of the lens. Thereby the lens is no longer as flexible or much clear as it used to be, then eye can't focus light properly.
The standard cataract surgical treatment is usually performed either in a hospital or in an ambulatory surgery center. The major common form of cataract operation today is aprocess known as phacoemulsification. With the help of an operating microscope, doctor will perform a very small incision or cut in the surface of your eye in or near to the cornea. A thin ultrasound probe was also inserted into the eye which uses ultrasonic vibrations to dissolve the clouded lens. These small or tiny fragmented pieces were then suctioned out by the same ultrasound probe. Once the cataract was removed, an artificial lens is positioned into the same slender capsular bag in which the cataract occupied. This intraocular lens was useful and required to help your eye focus after the surgery.
There are 3 basic techniques for the cataract surgery:
PHACOEMULSIFICATION: This is the most common form of cataract removal. In this most recent method, cataract surgery will be performed in less than 30 minutes & generally requires only nominal sedation and numbing drops and there will be nostitches to close the wound also no eye patch after the surgery.
EXTRACAPSULAR CATARACT SURGERY: This procedure is also used mostly for very advanced cataracts, where the lens was too thick to dissolve into small fragments or in facilities that don’t have any phacoemulsification technology. This procedure requires larger incision by that the cataract will be removed in one piece devoid of being fragmented inside the eye. An artificial lens is positioned in a same capsular bag with the phacoemulsification procedure. This surgical procedure may require a many number of sutures to close this larger wound, & visual recovery is often slower. Extracapsular cataract extraction generally needs an injection of numbing medication surrounding the eye & an eye patch after the surgery.
INTRACAPSULAR CATARACT SURGERY: This is a surgical procedure which requires an even larger wound when compared to the extracapsular operation, & the doctor will removes the whole lens & the surrounding capsule together. This procedure requires the intraocular lens to be positioned in a different location, in front of the iris. This procedure was occasionally used today but also it is still be useful in some certain cases of significant trauma.
After the removal of cataract by the surgery, an intraocular lens (IOL) was generally implanted into the eye, either by performing a small incision by using the foldable IOL, or by an enlarged or large incision, by using a PMMA (polymethylmethacrylate) lens.
MONOFOCAL LENS: These lenses are most commonly implanted lenses today. These lenses will have a equal power in all the regions of the lens & will provide a high-quality vision at a single focal point (usually from a distance). They generally need only a light pair of the spectacles for the optimal distance vision correction.
TORIC LENS: Toric lenses are having more power in exact one exact region in the lens to correct astigmatism, which may further improve unaided distance vision for so many individuals.
MULTIFOCAL LENS: Multifocal intraocular lenses are having a variety of regions along with much power within the lens which allows the individuals to see at variety of distances, involves distance, intermediate & near.
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