CORNEAL / CATARACT
Clear Corneal Incision
In clear corneal surgery, a tiny incision is made into the perimeter of the cornea on the side of the eye.
The incision provides a corneal tunnel through which the cataract is removed and the intraocular lens is implanted.
It is the architecture of the incision that makes it self sealing and therefore requires no stitches.
Insertion of the Lens
A specially designed injector, much like a syringe, is used to implant the foldable intraocular lens.
The injector is inserted into the clear corneal incision, over the iris and into the centre of the pupil.
The lens is slowly ejected here, where it expands and unfolds into position.
The Lens in the Capsule
Now situated in the same capsule as where the original lens once was, the new unfolded intraocular lens restores focus after the cataract surgery.
Corrective Surgery: Phacoemulsification
The most modern way of removing a cataract is through the use of phacoemulsification.
The phacoemulsifier is an ultrasonic probe that vibrates 40 000 times a second and breaks up the cataract in microscopic pieces which are then emulsified and gently aspirated out of the eye.
This method of cataract removal is considered to be the least traumatic to the eye.
Laser Cataract Surgery
Cataracts can also be removed with the aid of a Femtosecond laser.
This laser, such as the Ziemer Z8 which we have now purchased acts as an aid to automise and enhance the surgery.
The phacoemulsification equipment is still required to complete the operation.
Multifocal, Toric and Aspheric Intraocular Lenses
We use various foldable implants for the implants including multifocal/trifocal/or extended depth of focus implants to decrease dependency on spectacles, and combined into these lenses also toric and aspheric components to improve the uncorrected vision of most of our cataract patients. We can also apply excimer laser after the surgery to fine tune any focusing deficits.
Monovision options can also enhance unaided near vision.
Topical anesthesia is administered through eye drops. It offers many benefits to patients, but mainly it eliminates injections or general anaesthetic. Some patient prefer a general anaesthetic.
By using topical anesthesia, the patient retains the ability to move their eye and eyelids, so no patch is necessary and the patient can start using the new vision shortly after surgery. A clear shield is usually placed over the eye for the first day.
The vision may not be clear immediately but if not, it becomes clearer within a few days and spectacles where required will usually be prescribed within 2-3 weeks of the operation .