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New trifocal lens to end need for specs after cataract surgery

Press Trust of India  |  London 

The lens has three different focal parts: for near, far and intermediate vision.

The operation performed to insert the implant is bladeless.

It is carried out under local anaesthetic using a state-of-the-art computer-guided laser and takes just a few minutes.

The laser fragments the eye's natural lens, while simultaneously making an incision the size of a full stop into the eye, the 'Daily Mail' reported.

With the help of this incision, the tiny pieces of the natural lens are then removed through a fine tube, before the trifocal lens is inserted through the same incision

Cataract patients who had artificial lenses inserted into their eyes found they had good near vision and could see far away, but their middle-distance vision, for instance when they looked at a computer screen, was blurry.

Many still had to use glasses and contact lenses to fill this gap.

Lens implants are the most common treatment for cataracts, an age-related condition that results in clouding of the eye's natural lens.

Consultant ophthalmic surgeon Bobby Qureshi, who uses the new trifocal implant at the London Eye Hospital, says the results are almost instantaneous.

"Traditional multifocal lenses have been around for more than a decade but they developed a bad reputation because, while they offer patients good near and far vision, they don't provide enough intermediate vision for computer use, for example," said Qureshi.

"They also cause too much glare for many people. This trifocal lens overcomes these two main drawbacks, providing good all-round vision, with hardly any glare," he said.

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First Published: Mon, October 01 2012. 15:25 IST