CATARACT

Drishti Eye hospital has been among the first pioneer institute in the Tricity to introduce this surgery.

Cataract surgery is done by the sophisticated PHACO Emulsification (stitchless surgery) technique with implantation of foldable IOLs. Hospital is equipped with latest phaco machines (namely NIDEK, MILLENIUM from Bausch and Lomb , WHITESTAR from AMO) and Optical Biometer ( for unmatched accuracy in IOL power calculation) to give our patients best refractive outcome.

What is Cataract?

Normally, the natural lens of the eye is clear and allows light rays to pass through easily. When cataract develops, the lens becomes cloudy and opaque. The light rays no longer pass through the lens easily, so the patient cannot see clearly. Cataract is not a new growth or a film over the eye. It is not contagious.

Types of Cataract

The following are the various types of cataracts.

Senile Cataract:- This is the most common type of cataract, comprising 80 percent of the total cataracts. It occurs in patients usually above the age of 50.

Congenital Cataract:- Cataracts in children are rare. They can be caused by infection of the mother during pregnancy, or they may be hereditary.

Traumatic Cataract:- Eye injuries may cause cataracts in patients of any age.
Secondary Cataract:- Eye diseases, like glaucoma, iritis, eye tumours, and diabetes may cause cataracts.

Drug-induced Cataract:- Prolonged treatment with steroid drugs, either for local (e.g., allergic conjunctivitis) or systemic diseases (e.g., asthma, skin allergies & joint pains) may lead to cataract formation.

According to various researches hair dyes have also been found responsible for early cataract development.

Symptoms

Cataract formation is not associated with “signals” such as pain, redness or tearing. The common symptoms are:

  • Blurring or dimness of vision.
  • Double vision.
  • Glare & sensitivity to light.
  • Yellowing of colours.
  • Increasing difficulty with vision at night specially while driving.
  • Frequent changes in eyeglass or contact lens prescription.

REMEMBER

Don’t wait for surgery till the cataract matures completely.Surgery can be done in any season with the help of Modern Technology (PHACO Emulsification- No Stitch Technique). It is not necessary to take bed rest or take any special precaution after surgery.A cataract which creates problem in daily work, should be removed immediately.

Treatment

Cataract cannot be cured by medicines or spectacles. Removal of the clouded lens by surgery is the only treatment.Cataract surgery can be done by a conventional technique (Large incision) or Phaco-emulsification
(Small Incision/No-Stitch surgery).

Conventional Surgery

Traditional cataract surgery requires a large incision that spans the third of the circumference of the cornea (7-9mm). The cloudy lens is removed as a single piece. As many as seven stitches are required to close it after implanting an IOL (Intra Ocular Lens). One has to use pad bandage, dark glasses and eye shield and take recommended precautions in the post operative period for up to six weeks.

Phacoemulsification (Phaco) surgery

It is a no stitch micro incision cataract surgery. IOL is implanted and the wound is closed without any stitches.

A microprocessor controlled ‘PHACO’ machine- with tiny ultrasonic probe is used to remove cataract and the intraocular lens implant is inserted through the smallest possible opening in the eye. PHACO uses ultrasound energy to liquefy lens and suck it out with a titanium probe . The minute incision is self sealing and needs no suture or stitch to close it. The patient is back to normal activities within a few days, including attending office or even doing heavy manual work.

What is IOL ?

Intra Ocular lens (IOL) is a tiny transparent convex lens to replace the cloudy cataractous lens in the eye.It is made of different materials like PMMA (polymethyl methacrylate, a harmless plastic substance), Silicon & Acrylic (Hydrophillic & Hydrophobic).Unlike contact lens, an IOL stays permanently in the eye and does not cause irritation.A foldable IOL is inserted into the eye through a device called IOL Injector through a small hole of 2-3 mm dimension.

At Drishti Eye Hospital we use the best quality Foldable Imported IOL’s of reputed multinational companies.

Advantages of IOL:-

Since the lens is placed inside the eye, most patients donot need glasses for clear distance vision. But patient has to wear reading glasses for near and intermediate vision tasks.

Images are clear and of the same dimension without distortion.

Full vision retruns quickly.

Normal field of vision.

Types of IOLs:-

Preparing for cataract surgery? Before your operation, your surgeon will review the intraocular lens (IOL) replacement options. – A number of factors can affect your lens choices. Our Doctors and counselling department will help you to choose which kind of IOL is best suitale for you as per your expectations and routine.

They fall into four basic categories:-

  • MONO FOCAL OR UNIFOCAL IOLs
  • TORIC IOLs
  • MULTIFOCAL IOLs
  • MULTIFOCAL TORIC IOLs

MONOFOCAL or UNIFOCAL IOLs

With monofocal lenses, your vision is typically in focus at only one distance — near, intermediate or far prefebaly FAR. Most people who choose monofocals have their IOLs set for distance vision and use reading glasses for near activities. On the other hand, a person whose IOLs were set to correct near vision would need glasses to see distant objects clearly.

MONOFOCAL TORIC IOL’s:-

This is a monofocal IOL with astigmatism correction built into the lens.

This eye condition distorts or blurs the ability to see both near and distant objects. With astigmatism the cornea (the clear front window of the eye) is not round and smooth (like a basketball), but instead is curved like a football. People with significant degrees of astigmatism are usually most satisfied with toric IOLs.

MULTIFOCAL IOL’s:-

These newer IOL types reduce or eliminate the need for glasses or contact lenses.

In the multifocal type, a series of focal zones or rings is designed into the IOL. Depending on where incoming light focuses through the zones, the person may be able to see both near and distant objects clearly. Multifocal lens implants offer the convenience of less dependence on reading glasses compared to standard lens implants. People with good natural distance vision often go without eyeglasses when outdoors or around the house. However, when they need to see something up close – even for just a moment – they often have to find and put on their reading glasses. Examples of common momentary near tasks would be a looking at a cell phone, a photo, a menu, a boarding pass, an envelope address, a handwritten note, or a price tag or receipt. Having to frequently take their reading glasses on and off is inconvenient for many people.

WHO IS A SUITABLE CANDIDATE FOR MULTIFOCAL IOL’s

  • Wants to be less dependent on glasses.
  • Understands the limitations.
  • Willing to accept several week time to get adjusted to their new visual symptoms.

WHO IS NOT SUITABLE CANDIDATE FOR MULTIFOCAL IOL’s

  • Significant Dry Eyes.
  • Corneal Scarring
  • Pupil Size <2.5 mm
  • Monofocal Implant in first eye.
  • Unstable capsular support.
  • Some one who is not ready for neuro adaptability.

LASIK LASER

Drishti Eye Hospital, the premier eye care centre in the Tricity is pioneer in Lasik surgery. Equipped with Nidek Laser machine (only machine with U.S. FDA approval for removal of upto -14D) is used to perform these sophisticated and specialized surgeries.

LASIK (Laser-Assisted in Situ Keratomileusis), commonly referred to as laser eye surgery, is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism.

What procedure is done in LASIK

During LASIK, a thin corneal flap is raised (less than 150 microns) and the shape of cornea is modulated with laser beam after which the corneal flap is replaced. The total procedure time on each eye is 5-7 minutes. During the procedure the patients lies down on an automated resting couch which aligns the patient with the LASIK machine. Topical anesthetic drops are applied and the patient is asked to look straight, not to move the eyes and be completely relaxed. The surgeon always help the patient by communicating to him/her.

What is Customized LASIK treatment

In a Customized LASIK treatment, the LASIK not only treats the power of glasses, but also reduces the higher-order aberrations (which can never be corrected by glasses/contact lenses). After this treatment, the patient may achieve Supra-Normal Vision (that is better than normal 6/ 6 vision).

How safe is LASIK procedure

LASIK is one of the safest procedures performed over the eye all over the world. The safest profile of LASIK procedure is very high. The LASIK machine is mostly automated and operated by highly skilled refractive surgeons thus increasing the success rates.

Do I have to get admitted in the hospital

No. LASIK is a day-care procedure. You will have to arrive in the morning on the surgery appointment day and can go back by afternoon. The day of surgery you should take rest at home.

Does the LASIK procedure hurt

NO. There is no pain during or after the procedure. The patient may feel some pressure over the eye which lasts for a few seconds.

Advantages of LASIK

Predictable and permanent correction of refractive errors.
Dramatic improvement in vision without glasses compared to pre Lasik vision without glasses.
The goal is to reduce or eliminate dependence on glasses and contact lenses.
A quick procedure with rapid recovery.
It does not involve any injections or sutures.
Quick return to usable vision.
No hiccups of broken or lost glasses.
No blurred vision due to fogging of glasses during rainy season or coming out of AC environment.
No hassles in swimming.
Unhampered participation in active sports.
What tests are done to evaluate eyes for LASIK

A complete examination of the eye including vision, refraction, Slit Lamp and Fundus examination, Tear fnction test, Eye Pressure Measurement is done. This is followed by LASIK-specific tests namely Pachmetery, etc. More than one test is required for the complete evaluation of a patient.

We would also like to know the following information to help us understand the type of treatment applicable for you:

Age
Current Refraction (spectacle numbers)
Lifestyle – outdoor, computers etc / profession
Any significant medical or eye history
An eye report / tests done

What results can I expect from LASIK

Same day of the treatment, the patient is able to achieve his best-spectacle corrected vision without using the spectacles. Clarity of vision gradually improves over the next few days to its maximal level. Some patients may experience some difficulty while reading on the 1st post- operative day which soon recovers.

Intra Ocular Contact Lenses

An attractive technology for vision correction is ICL. In fact, it is a better choice than laser vision correction. It is made of collemer, an advance lens material that is soft, flexible & designed especially for thhe eye. It is ideal for those with an active lifestyle. It sits behind the Iris & infronnt of the natural lens. When implanted the lens is completely invisible to you or anybody else. Unlike contact lenses you do not deel the lens in the eye. The ICL is folded and implanted through a 2 mm incision. The lens slowly unfolds & is gently tacked behind the Iris. The entire procedure takes about 15 to 20 minutes with complete recovery in 1 or 2 days, usually much sooner than alternative vision procedures. Patient experience a tranformation in vision very soon after the procedure. The ICL delivers a vision that is sharper, cleaner more vivid than alternative vision correction procedures.You see the world in high defination everytime you open the eyes. The Major advantage is that this lens can be removed if required. This enables you to undergo procedure with newer technologies later on. It contains UVA & UVB blocking agents and it does not cause dry eyes.

ARE YOU DIABETIC ?

Diabetic retinopathy affects blood vessels in the light-sensitive tissue called the retina that lines the back of the eye. It is the most common cause of vision loss among people with diabetes. Every diabetic needs to be screened for it by

GLAUCOMA

Age-related macular degeneration (AMD) is the most common cause of irreversible central vision loss in elderly patients. Dilated funduscopic findings are diagnostic; color photographs, fluorescein angiography, and optical coherence tomography assist in confirming the diagnosis and in directing treatment.

AGE RELATED MACULAR DEGENRATION (ARMD)

Age-related macular degeneration (AMD) is the most common cause of irreversible central vision loss in elderly patients. Dilated funduscopic findings are diagnostic; color photographs, fluorescein angiography, and optical coherence tomography assist in confirming the diagnosis and in directing treatment.