The Cataract & IOL Service at ClearVision Eye Centre
Sight is our most precious sense enabling us not only to survive but also to enjoy the beauty of the world around us. Over 60% of blind people suffer from cataract which is completely curable.  A cataract is an eye disease in which the normally clear lens of the eye becomes cloudy or opaque, causing a decrease in vision. Cataract is part of ageing but giving up favorite activities and suffering through years of poor vision due to cataract is no longer an inevitable part of the ageing process.
Now a days, modern microsurgical techniques utilizing state-of-the-art equipment, lenses and surgical material, allow people to enjoy good, clear vision once their cataracts have been removed. Our centre and its team of cataract surgeons are dedicated to provide the best possible care to patients suffering from cataract.

What is cataract?
Cataract is an age related condition where the normally clear lens of eye gets cloudy. This prevents the lens from focusing light onto the retina and hence causes hazy vision. As the cataract advances, the lens becomes totally opaque, this cloudiness of vision increases over a period of time until the vision is completely impaired.
Why does a cataract develop?
Although, cataract development is part of the normal ageing process, it can develop prematurely in conditions like diabetes, injury to eye, poor nutrition and use of medications like oral steroids. . Rarely cataract may be present in the newborn or adolescents as a developmental defect.

What are the symptoms of cataract?
Most common symptom of cataract is gradual deterioration of vision. As cataract advances, the objects may begin to look yellow, hazy and blurred. Many people also experience glare or haloes from lights at night thus difficulty in night time driving.

How are cataracts diagnosed?
Cataracts are detected by the finding of lens opacification during a medical eye examination by an eye specialist. The abnormal lens can be seen using a variety of specialized viewing instruments. Using a variety of tests like visual acuity check, glare sensitivity, color vision, contrast sensitivity, and a thorough examination of all other parts of the eye your doctor will make sure vision loss is not due to other common eye problems, including diabetes, glaucoma, or macular degeneration.
Can cataract be prevented or treated with medication?
As cataract formation is part of our ageing, it can not be cured with medications, however, keeping a good health and staying away from smoking does help in preventing early development of cataract. The only known treatment for cataract is surgery.

When can one undergo Cataract Surgery?
Surgery is recommended for most individuals who have significant vision loss and are symptomatic secondary to cataract. Cataract surgery can be performed when the patient feels handicapped in performing routine activities at work, driving or leisure. With modern microsurgical techniques of stitch-less cataract surgery (phacoemulsification) it is not advisable to wait for the cataract to mature.

What does cataract surgery?
The standard cataract surgical procedure is performed in a hospital on an outpatient basis. The most common form of cataract surgery today involves a process called phacoemulsification. With the use of an operating microscope, your surgeon will make a very small incision in the surface of the eye in or near the cornea.
It is one of the safest and most rewarding forms of surgery in humans. It is routinely performed under local or topical anesthesia and requires a very short hospital stay. The patient is awake during surgery but hardly feels any discomfort or pain. Patients are can move around after surgery and are discharged on the same day.

MicroIncision cataract surgery (MICS/PHACO) being a microsurgery, the eye operation is performed with the help of a sophisticated operating microscope. Compared to non-phaco cataract surgery (Extra capsular cataract surgery, ECCE), the postoperative rehabilitation for stitch-less phacoemulsification is faster and one can return to normal work and activities within a few days.
A small incision of 1.8mm to 2.0mm is first made in the eyeball followed by a smooth round opening made in the front part of the lens capsule.

The cloudy lens material is then liquefied or dissolved with a high frequency ultrasound probe (a thin titanium probe that emits high-speed ultrasound waves, vibrating at 40,000 times per second). This liquefied lens matter is then removed by gentle suction through the same probe.

In the final step, a Foldable Intraocular Lens (IOL) is introduced through the small incision, and placed within the capsule of the lens where it unfolds and stays in place securely.

 One of the most recent advancements has been the ability to perform cataract surgery through even smaller incisions (as small as 1.8 mm). Small and micro incisions such as those used in phacoemulsification seal themselves immediately after surgery and heal very quickly. This is currently the most effective method for removing cataracts.