Toric intraocular lenses (IOLs) are an advanced type of artificial lens used in cataract surgery or refractive lens exchange, that can correct for astigmatism (blurry vision). They are considered a 'premium lens', and like multifocal and accommodating IOLs provide extra benefits that are unavailable in conventional intraocular lenses (IOLs).
Astigmatism itself, is blurry vision caused by the cornea being misshaped more like a pointy rugby ball than more rounder football ball, which is the normal shape. As a result, the eye cannot focus light as it should. Astigmatism (blurry vision) can accompany nearsightedness or farsightedness. If your glasses or contact lens prescription has three parts to it – for example, -2.75 -1.25 x 90 – it means that your eye doctor has detected an astigmatism.
Most surgeons who treat astigmatism in their cataract patients tend to use astigmatic keratotomy (AK) or limbal relaxing incisions, which involve making incisions in the cornea.
But in addition to or even instead of corneal astigmatism, some people may have lenticular astigmatism, caused by irregularity in the shape of the natural lens inside the eye. This can be corrected with a toric IOL.
There are many toric lenses available, but these include:
- Staar Surgical Intraocular Lens. The Staar toric IOL comes in a full range of distance vision powers, in two versions. One corrects up to 2.00 diopters (D) of astigmatism and the other corrects up to 3.50 D. This is rarely used in modern practice.
- AcrySof IQ Toric IOL (Alcon). This lens also is available in aspheric versions for crisper vision. Different models also can filter potentially damaging UV or blue light. The AcrySof Toric lens, is uniquely designed to reduce or eliminate corneal astigmatism and appreciably improve distance vision.
Are You a Candidate?
You may be a candidate for a toric IOL if you have cataracts and astigmatism (blurry vision).
To determine if a toric IOL is for you, your doctor will perform a thorough exam and review your medical record. People with chronic infections, uncontrolled diabetes or other health problems may have to wait until these conditions are under control before pursuing this surgery
If you have been affected by any of the symptoms mentioned above, please don't hesitate to give us a call.
We have a team of experts on stand-by who are ready to take your call at our Manchester (0161 907 2685) Clinic or our Blackpool (01253 308 031) Clinic.