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As we age, changes occurring to the natural crystalline lens can lead to a loss in clarity of the lens and development of cataracts. Since the lens is no longer as flexible or as clear as it used to be, the eye can't focus light properly.

What Causes Cataracts?vision-with-cataract

While cataracts can occur as a result of other eye diseases, they mostly develop naturally with age. In fact, by age 65, many of us will develop a cataract.

There are other, less common causes of cataracts as well, including heredity, birth defects, chronic diseases such as diabetes, excessive use of steroid medications, and certain eye injuries.

 

Symptoms of Cataracts

At first, symptoms may be undetectable or very slight. However, any noticeable change in vision may be cause for concern, and should be brought to the attention of an eye care professional. Common symptoms of cataracts include:

  • Cloudy or blurred vision

  • Sensitivity to light and glare

  • Frequent prescription changes for glasses or contact lenses

  • Poor night vision

  • Colour vision changes and dimming

  • Double vision in a single eye

Treatment for Cataracts

While there is no way to prevent cataracts, there are things you can do to slow their formation. Modifiable factors that increase the risk of cataract include smoking, high blood pressure, obesity, and excessive alcohol intake. You may also slow the formation of cataracts by protecting your eyes from direct sunlight.

In the beginning stages of cataracts, vision may be slightly improved using forms of visual correction. However, in the later stages, surgery is required. Fortunately, surgery has proven to be extremely successful in the removal of cataracts. During cataract surgery, your physician will replace your natural lens with an IOL.


Intraocular Lenses are broadly divided into the following types:

Monofocal Intraocular Lenses

Monofocal IOLs provide clear vision at one focal point, usually both eyes are corrected for distance vision. An alternative to this is Monovision where one eye is corrected for distance and the other is corrected for near vision. With both options glasses will still be required for certain tasks, in particular for near and intermediate vision.

Bifocal Intraocular Lenses

Bifocal IOLs are a further option for the surgical replacement of the natural lens. These will correct for near and far vision, but offer limited intermediate vision which is important for many common tasks such as locking doors, cooking or computer work.

Trifocal Intraocular Lenses

FineVision  the first diffractive trifocal IOL, provides optimal vision at all distances without glasses.1

FineVision is a trifocal intraocular lens that features a series of rings which diffract light to provide — Far, Intermediate and Near vision, lending to the name FineVision.

FineVision features an innovative trifocal structure designed to significantly improve performance for intermediate vision.

The design of FineVision is different to multifocal or bifocal glasses. You don’t have to worry about moving your head to see clearly or even walking down stairs, as the lens is implanted in the eye.

Many patients implanted with FineVision don’t need to wear glasses for everyday tasks such as driving, reading the car speedometer or even using their smart phone.1

Photo courtesy of National Eye Institute, National Institutes of Health.

Your eye care professional will advise you whether this product is suitable for you. Any surgical procedure carries risks. Before proceeding, you should seek further advice from a qualified eye care practitioner.

Reference:

1. Daya S, Espinosa M; The FineVision Trifocal Lens, ESCRS 2011