Cataract surgery is the removal of the lens inside the eye after it has become cloudy due to aging, an eye injury or other causes. In most cases, the cataract surgeon replaces the cloudy natural lens with an artificial lens implant (also called an intraocular lens, or IOL) to restore vision and eliminate the need for thick glasses after surgery. Cataract surgery is one of the most frequently performed surgical procedures in the world. According to Bausch & Lomb, a leading American eye care company, more than three million cataract surgeries are performed in the U.S. every year, and more than 50 percent of Americans over age 65 have cataracts in one or both eyes.
What are the Types of Cataract?
There are three types of cataracts:
A nuclear cataract, which is located in the center of the lens, the nucleus is most commonly seen as it forms. It is said that the cause of this cataract is due to changes in the protein structure as we age.
A cortical cataractstarts of on the outside of the lens and slowly extends to the center. This cataract is common for people with diabetics.
A sub capsular cataract begins at the back of the lens. People who have a higher risk of developing this form of cataract are: people with diabetes, high farsightedness, retinitis pigmentosa or those taking high doses of steroids.
What is the Success Rate of Cataract Surgery?
The success rate of cataracts surgery with today’s advanced methods and ultra-modern equipment is 95%. And, the risk of becoming blind with surgery for cataracts removal is extremely low. For those few patients where surgery does not result in improved vision, there is usually a different underlying ocular condition such as age related macular degeneration (ARMD) or diabetic retinopathy.
What Causes Cataract?
There are many causes of cataract. Some of the causes are mentioned below:
As a natural age process which is called age related cataracts or senile cataracts. It usually started at the age of 40 and gradually the opacity of the lens will increase to be clinically significant and reduce the vision. It is one of the most common of cataracts causes.
Systemic diseases like diabetes mellitus, hypertension. Hyperlipidemia and other diseases which will cause cataract in younger age or accelerate its course to be clinically significant.
Due to intra-ocular diseases like glaucoma, uveitis, retinal diseases or tumors. Sometimes it can occur after eye surgeries like retinal surgeries, glaucoma surgeries and even laser surgeries.
Nutritional causes in which it can be caused by alcohol consumption which is called alcoholism cataract, smoking or malnutrition with low levels of certain factors called antioxidants like vitamin C, vitamin E and carotenoids.
Genetics. In which it can run in families especially especial type of cataract called blue-dots cataract.
How is Cataract Diagnosed?
By doing a comprehensive eye examination, an ophthalmologist can diagnose a cataract and monitor its development.
A comprehensive eye examination usually includes:
Visual acuity test: This is an eye chart test where the will ask the patient to read a letter chart to see how sharp your sight is at various distances. Pupil dilation: In this test, the pupil (the round black centre of your eye) is widened with eye drops to allow the ophthalmologist to see more of the lens and retina and look for other eye problems.
Other eye tests include:
Contrast sensitivity test
Who is the Candidate for Cataract Surgery?
You are an ideal candidate for Cataract Surgery if you have
Poor night vision
Colors appearing less vivid or “washed out”
Glare and halos around lights at night
Sensitivity to light
The need for frequent changes to your glasses prescription
The need for brighter light when reading
Double vision (especially if present with one eye closed)
To detect and assess vision loss associated with cataracts, your eye doctor may use a special test called a contrast sensitivity test, and may conduct the test with and without a glare source.
Dr. Kunal Patel is committed to providing the highest quality vision care to all our patients. Our office is equipped with the most modern instruments available for the diagnosis and treatment of vision and eye
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We are committed to providing the highest quality vision care to all our patients. Our office is equipped with the most modern instruments available for the diagnosis and treatment of vision and eye problems of adults and children. We provide primary eye and vision care services including routine evaluations, contact lens services, diagnosis of ocular diseases (glaucoma, red eyes, ocular allergic conditions, dry eye syndromes, injuries, etc), and preventive treatments of vision problems.