ABOUT CATARACT SURGERY
Cataract extraction and lens implantation is elective surgery that involves the surgical removal of the natural lens of the eye followed by the implantation of an artificial intra-ocular lens. Repositioning or removal of the lens after implantation is rarely necessary. The surgery itself takes an average 15 minutes and recovery time will usually be 1-8 weeks.
The purpose and benefit of cataract surgery is to remove the cloudy lens of the eye in order to improve the quality of vision. Cataract surgery cannot improve vision damaged by retinal changes, glaucoma or other eye diseases.
There is no currently available alternative to surgery for the treatment of cataracts. You may, however, choose not to have cataract surgery and continue with your present or progressing state of vision. The alternative to implantation of an intra-ocular lens is the use of strong-powered glasses of contact lenses.
SMALL INCISION CATARACT SURGERY EXPLAINED
This is your right (or left eye) before the development of a cataract. The lens is clear and focuses the image onto the retinal “sensor” or “film”
This is the eye after the cataract has developed. A cataract is a filmed area in the lens of the eye. You can see how it interferes with the focus onto the retina so that the image is blurred.
Cataract surgery is performed under a surgical microscope and uses Micro-surgical instruments. The microscope is mounted on the ceiling and has foot-pedal controls that can adjust the focus, zoom, position, and light intensity.
Looking through the microscope, a keyhole incision (usually not requiring a suture) is made in the wall of the eye at the edge of the coloured part of the eye at where the cornea and sclera meet:
Through that incision, and looking thought the cornea, the whole operation is performed. First a circular opening is made in front lining layer (or capsule) of the lens:
The lens is then removed by an ultrasound probe (which vibrates 40,000 times a second. It breaks the cataract into tiny microscopic pieces that are emulsified and gently aspirated out of the eye. (This method of cataract removal is considered least traumatic to the eye).
FEMTO-SECOND LASER ASSISTED CATARACT SURGERY EXPLAINED
A new lens is inserted into the space occupied by the original lens (The foldable lens is delivered from a specially designed injector)