Cataracts are one of the leading causes of vision loss in people over 45. A condition that commonly develops as the eye ages, by the time we reach 80, more than half of us will have developed a cataract.
A cataract is a clouding of the lens in your eye which is normally transparent. The lens, located inside the eye, behind the iris and the pupil, focuses light onto the retina at the back of your eye, where it is converted to nerve signals that are passed to the brain, allowing you to see. When your lens becomes cloudy, the images projected onto your retina become blurry and unfocused and therefore the signal to the brain is also unclear. You can compare this to looking through a dirty or cloudy window. If the window is not clear, you can’t see well.
Usually cataracts develop slowly over time so your vision gradually worsens. While the majority of cataracts are a result of the aging process, there are also congenital cataracts that are present at birth, secondary cataracts that result from eye surgery or diseases such as glaucoma or diabetes and traumatic cataracts that result at any age from an injury to the eye.
Symptoms of cataracts include:
- Blurry or cloudy vision (that can’t be corrected with a change in eyeglass prescription)
- Glare from lamps, sunlight, oncoming traffic when driving at night or indoor lighting
- Colors appear dim and less vibrant
- Halos around lights
- Double vision
- Poor night vision
- Sudden improvement in near vision
Treatment for cataracts involves surgery, but being diagnosed with a cataract does not mean that you need to have surgery immediately, or maybe ever. You may be able to live with symptoms of early cataracts for a while by using vision aids such as glasses, anti-glare sunglasses, magnification lenses, strong bifocals or brighter lighting to suit your needs.
Cataract surgery is one of most common surgeries performed in North America and has a 90% success rate (meaning the patient has improved vision, between 20/20 and 20/40 vision, following the procedure).
The surgery involves removing the clouded natural lens and usually replacing it with a clear, plastic intraocular lens (IOL) that becomes a permanent part of the eye. It is a relatively quick and painless procedure and you will not feel or see the IOL after the implant.
Surgery should be considered when the condition begins to seriously impair your vision to the extent that it affects your daily life such as reading or driving, playing golf, playing cards, watching TV, etc. Sometimes surgery is also necessary if the cataracts are preventing treatment of another eye problem. The good news is that cataract surgery is typically very successful in restoring your vision. Together with your eye doctor, you will decide if and when the time for surgery has arrived.
If you think you might have a cataract, it is important that you be seen by your eye doctor immediately. Please give us a call to schedule your appointment.