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What is a Cataract?

To understand a cataract, it is important to understand how the eye works. The eye functions much like a camera. Light rays enter the eye, passing through the cornea, then the pupil and through the lens. The lens bends the light rays to focus objects onto the retina, lining the back of the eye. From there, the image passes through the retinal cells, into the optic nerve, and finally to the back of the brain which processes the images.

Cataracts occur when there is a buildup of protein in the lens that makes it cloudy. This prevents light from passing clearly through the lens, causing some loss of vision. Since new lens cells form on the outside of the lens, all the older cells are compacted into the center of the lens and  a cataract is formed.  When the lens becomes cloudy it is then called a cataract.
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Understanding Cataracts

Types of Cataracts Include:

  • Age-Related Cataracts – This type of cataract develops as a result of aging.
  • Congenital Cataracts – Babies are sometimes born with cataracts as a result of an infection, injury, or poor development before they were born.
  • Secondary Cataracts – These types of cataracts develop as a result of other medical conditions, such as diabetes, exposure to toxic substances, certain drugs (such as corticosteroids or diuretics), ultraviolet light, or radiation.
  • Traumatic Cataracts – These form after injury to the eye.

Other factors that have an effect on the eye and that can increase a person’s risk of developing cataracts include cigarette smoke, air pollution, heavy or frequent doses of steroids, and heavy alcohol consumption. The forming of a cataract can significantly reduce vision and ultimately reduce the longevity of life, as a recent study has shown.

 

What are the Symptoms of a Cataract?

Cataracts usually form slowly and cause few symptoms until they noticeably block light. When symptoms are present, they can include:

  • Vision that is cloudy, blurry, or foggy; having difficulty reading street signs, reading a newspaper, seeing TV captions, following a golf ball, etc.
  • Progressive nearsightedness.
  • Changes in perception of color because the discolored lens acts as a filter.
  • Problems driving at night, such as glare from oncoming headlights.
  • Glare problems during the day from sunlight.
  • Double vision (appears as a superimposed image).
  • Frequent changes in glasses prescriptions? Needing more light to read.
Cataract Cape Coral

Cataract Risk Factors

Here at Tyson Eye in Naples, we understand that cataracts are scary and many people who are diagnosed believe that there is something they could have done to prevent it. While there are plenty of risk factors thought to contribute to cataract formation, there is no known way to prevent or cause cataracts. The largest risk factor for cataracts is age. In fact, over 25 million people in the US alone are living with cataracts today, with that number expected to double by 2050. 

Cataract risk factors include:

  • Ultraviolet radiation from sunlight and other sources
  • Diabetes
  • Obesity
  • Hypertension
  • Smoking
  • Previous eye surgery
  • Previous eye injury
  • Prolonged use of corticosteroid medication
  • Significant alcohol consumption
  • High myopia
  • Family history

Cataract Prevention

There is no known method of cataract prevention, and there is some controversy about whether or not it can be done. However, there are numerous studies, past and on going, that suggest there may be a way. Some believe reducing UV exposure by wearing sunglasses can help. Others think that your diet may have a lot to do with whether or not you develop cataracts. Studies have suggested that certain nutrient and nutritional supplements may reduce your risk of developing cataracts.

One such study of female health professionals over a 10-year period found that high intakes of vitamin E and other nutrients were associated with a significant decrease in cataract development. Good sources of vitamin E include sunflower seeds, almonds, and spinach.

While these things may reduce your risk of developing cataracts, they cannot treat them. The only treatment for cataracts is cataract surgery.

How Are They Diagnosed?

An eye exam should be given to test how well you can see wearing your glasses (be sure to bring them to your appointment). The doctor will dilate your pupils in order to examine the condition of the lens and other parts of the eye.

Cataract Surgery

Going in for your cataract surgery can be intimidating, however, you have nothing to worry about at Tyson Eye in Naples. Our expert staff and experienced doctors have your covered. What should you expect before, during and after your cataract surgery?

Before Your Cataract Surgery

Before your cataract surgery, you will have a consultation. During this consultation, your Naples cataract surgeon will check your eyes to make sure they are healthy enough for surgery. You will also give your doctor an idea of your medical background and any current medical conditions.
During this consultation, you and Dr. Tyson will discuss IOLs. Your IOL will replace your cataract, so it is important to choose one that fits your visual needs and lifestyle.

After Cataract Surgery

After your surgery, you will be able to go home. Dr. Tyson will likely send you home with an eye patch, which you will keep on for a certain amount of time to keep the eye safe as it heals. You will be given antibiotic eye drops, and you will use lubricating drops to keep your eyes comfortable.
Your eyes should heal quickly, and you will have several follow up appointments to ensure everything is healing, as it should. Cataract patients typically see an improvement in vision immediately after surgery, but full results will not be apparent until a few weeks after surgery.

During Your Surgery

The day of your cataract surgery, you will want to arrange a ride home for after your surgery. Make sure to pick up any prescriptions you may need for after the surgery.

Before beginning, Dr. Tyson will numb your eyes. He will then create a small incision in the cornea that will allow access to the cataract. Once the cataract is accessed, he will use ultrasonic technology to break up the cataract for easy removal. Once the cataract has been completely removed, a clear, flexible intraocular lens (IOL) will take its place.

Once the IOL is properly positioned, your cataract surgery is over!

Farrell C. Tyson,  M.D., F.A.C.S.


Farrell C. Tyson M.D., F.A.C.S.
Board Certified Ophthalmologist
Medical Director and C.E.O.

Dr. J. David Stephens


J. David Stephens, M.D.
Board Certified Ophthalmologist
Cataract, Cornea, and Glaucoma Surgeon

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