Cataracts

A cataract is a cloudy area in the normally clear lens of the eye. The lens is located behind the iris, the colored part of the eye.  The lens focuses light on the back of the eye, the retina, which sends the image through the optic nerve to the brain.  If a cataract clouds the lens, the lens can no longer focus it properly.  Depending upon its size and location, a cataract can interfere with normal vision.

Signs and symptoms of a cataract may include:

• Blurred or dim vision
• Increased sensitivity to glare from lights, particularly when driving at night
• Increased difficulty seeing at night or in dim light

Most cataracts are due to age-related changes in the lens. Other factors that can contribute to their development include:  

• Extensive exposure to sunlight
• Smoking
• Diabetes
• Steroid medicines
• Previous eye trauma, swelling or surgery

If you have any of these risks factors for cataract, you should schedule an appointment with your eye doctor.

 The treatment of cataracts is based on the level of visual impairment they cause.  If a cataract affects vision only minimally or not at all, you may be advised to follow a regular check-up schedule.  In some cases, a change in eyeglass prescription may improve your vision.  The use of non-glare lenses can help reduce glare for night driving.  When a cataract progresses to the point that it affects your ability to do normal everyday tasks, surgery may be recommended.