Cataract Surgery

This procedure involves the permanent removal of a cataract – a cloudy lens that causes blurred vision if left untreated. Allon Barsam will also give you the option of premium lenses which will allow you to dispense of your distance and vision glasses completely following the cataract surgery.

Allon Barsam’s cataract surgery results are excellent, with 100% of his patients achieving 20/20 sight or better following treatment (relating to patients who had otherwise healthy eyes with no vision limiting condition.) As well as performing Femtosecond laser cataract surgery, the latest generation in cataract surgery, Mr Barsam also performs innovative lens implant surgery for cataract sufferers for those patients not suitable for Femtosecond cataract surgery, e.g. if a patient has irregular-shaped corneas.


Those undergoing cataract surgery will have been experiencing a clouding of the natural lens inside the eye. It is very common with 60% of all 60 year olds having some signs of lens opacification. Developing a cataract is an inevitability of age and some lens changes are present in all people who are over 80 years of age.

Symptoms include blurring of vision and glare in sunny conditions. Cataracts can also result in the prescription becoming increasingly more myopic (near-sighted). Despite this, there are other causes aside age which include; diabetes (diabetic cataract), trauma (traumatic cataract), congenital cataract, inflammation (uveitis) and the use of steroids.

Clouding normally occurs with refractive error such as astigmatism and presbyopia for example. A person may have a cataract, hypermetropic astigmatism and presbyopia all together and all of these problems can be corrected with one procedure by an appropriately skilled and trained surgeon who carries out the cataract surgery with a premium intraocular lens.


The surgery is normally carried out as a day-case procedure under local anaesthetic drops and is not painful. The lens is implanted through a keyhole microscopic suture-less corneal incision and typically takes 10-15 minutes to perform. Normally, each eye undergoes surgery on a separate occasion, usually 1-2 weeks apart.

We use premium lens implants such as toric intraocular lenses or presbyopic lenses in order to correct astigmatism. In essence, these give individuals both distance and reading vision simultaneously with the use of a multifocal intraocular lens. Over the years, Mr Barsam has gained considerable experience with these lens combinations, especially with the use of the multi-focal toric lenses. He can therefore carry out cataract surgery manually or with the use of a femtosecond laser technique, and was the first British Ophthalmologist in the world to carry out this procedure in April 2011.


For more information on how cataract surgery is performed, please do get in touch and we would be happy to discuss it with you.

Francis Lawerence – Cataract Surgery

“I am sure Mr Barsam has hundreds of impressed patients and many testimonials which are well deserved, but I thought I would add another to his collection and join many admirers.”