Phacoemulsification


Phacoemulsification is a commonly used type of cataract surgery. It involves the use of an ultrasound probe and a steel ‘chopper’ to break up and remove clouded eye lenses known as cataracts.

In the UK, Approximately 30% of people aged above 65 will develop cataracts. They can be linked to either old age, or a number of other conditions, such as diabetes, heavy alcohol intake and smoking. It is also possible they may be present from birth, so called congenital cataracts. They adversely affect the vision of the individual, often causing ‘cloudy’ vision.

For this reason, many opt to have the cataracts removed and replaced with synthetic lenses. Prior to performing surgery, anaesthesia must be given, usually in the form of eye drops. The first part of the surgery involves making a number of incisions in the front of the eye, through which the ophthalmologist can introduce a number of surgical tools. Removal of the anterior face of the chamber that contains the cloudy lens is vital to allow access for the ultrasound probe. The ultrasound probe is then introduced into the anterior or front part of the eye, where it can reach the lens. On the tip of the probe is a tiny needle that vibrates at ultrasonic frequencies, breaking up the lens. This is then removed through a suction pump on the side of the probe, which pumps saline through the anterior chamber of the eye, washing it out. This allows removal of the hard central part of the lens, whereas the soft part is removed by suction methods only.

Following removal of the lens, a synthetic replacement (also known as an IOL – intraocular lens) is added into the anterior chamber. The most commonly used type is the foldable replacements, as they are the easiest to insert and require fewer incisions.

Many patients report brilliant outcomes following the surgery, allowing them to return to normal after a brief recovery period.

Visit the Cataract Guide Surgery, for further information.


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