What is a cataract?
A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.
A cataract can occur in either or both eyes. It cannot spread from one eye to the other.
What is the lens?
The lens is a clear part of the eye that helps to focus light, or an image, on the retina. The retina is the light-sensitive tissue at the back of the eye.
In a normal eye, light passes through the transparent lens to the retina. Once it reaches the retina, light is changed into nerve signals that are sent to the brain.
The lens must be clear for the retina to receive a sharp image. If the lens is cloudy from a cataract, the image you see will be blurred
Are there other types of cataract?
Yes. Although most cataracts are related to aging, there are other types of cataract:
1. Secondary cataract. Cataracts can form after surgery for other eye problems, such as glaucoma. Cataracts also can develop in people who have other health problems, such as diabetes. Cataracts are sometimes linked to steroid use.
2. Traumatic cataract. Cataracts can develop after an eye injury, sometimes years later.
3. Congenital cataract. Some babies are born with cataracts or develop them in childhood, often in both eyes. These cataracts may be so small that they do not affect vision. If they do, the lenses may need to be removed.
4. Radiation cataract. Cataracts can develop after exposure to some types of radiation.
Multifocal or Accommodative IOLs:
A new generation of implants is now available to provide a greater independence from glasses than could be obtained with standard IOLs.
ReZoom™ & ReStor®:
The ReZoom lens has multifocal zones that provide a range of visual correction and thus provide good vision over varying distances. The AcrySof ReSTOR IOL utilizes diffraction optics to provide excellent visual acuity at near and distance.
To learn more about these lenses check the following web sites:
The Eyeonics Crystalens® has the ability to accommodate or alter shape thus allowing it to focus on both distance or near objects. These premium IOLs can be used for Medicare recipients but there is an additional out of pocket expense. Dr John DeCarlo would be happy to discuss your options regarding this exciting technology to reduce the dependence on glasses.
This unique lens allows us to reduce or eliminate corneal astigmatism thus reducing the need for post op lens correction for best distance visual acuity after surgery. If you have a history of astigmatism be sure to ask about his new surgical product. Dr DeCarlo and his staff will be happy to discuss this or any of the other new implant products available
We are now offering Lensx laser cataract surgery!
To find out more information about the Lensx laser please talk to Dr. DeCarlo or click on the link below.
What causes cataracts?
The lens lies behind the iris and the pupil (see diagram). It works much like a camera lens. It focuses light onto the retina at the back of the eye, where an image is recorded. The lens also adjusts the eye's focus, letting us see things clearly both up close and far away. The lens is made of mostly water and protein. The protein is arranged in a precise way that keeps the lens clear and lets light pass through it.
But as we age, some of the protein may clump together and start to cloud a small area of the lens. This is a cataract. Over time, the cataract may grow larger and cloud more of the lens, making it harder to see. Researchers suspect that there are several causes of cataract, such as smoking and diabetes. Or, it may be that the protein in the lens just changes from the wear and tear it takes over the years.