How Does LASIK Work?

LASIK uses a laser to change the shape of the cornea.

In the myopic eye, the image does not reach the back part of the eye (the retina). In the myopic eye the cornea and lens are too curved and focus the image to a point in front of the retina, the image is then seen as a blur.

LASIK involves slightly flattening the cornea which is the curved rounded front surface of the eye; the image is then clearly focused on the retina.

In the hyperopic eye the cornea and lens are too flat and focus the image to point behind the retina; the image is then seen as a blur.

After laser correction with LASIK the cornea is slightly more curved; the image is then clearly focused on the retina.

The result is that the hyperopic patient can see clearly for distance after laser treatment.

In astigmatism, the eye is oval like a football, and not spherical. The image is formed at two different points inside the eye. This means that images of different orientations are focused at different parts of the eye and that the image on the retina is blurred.

In the treatment of astigmatism, irregularities in the shape of the cornea are smoothened to even out the focusing power.

Are you a Candidate for LASIK?
  • You should be at least 18 years old, since the refraction of people younger than 18 usually continues to change.
  • You should not be pregnant or nursing as these conditions might change the measured refraction of the eye.
  • You eyes must be healthy and your glass prescription stable.
  • You should be in good general health.
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When to see a doctor

Make an appointment for an eye exam if you notice any changes in your vision. If you develop sudden vision changes, such as double vision or flashes of light, sudden eye pain, or sudden headache, see your doctor right away.

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The LASIK Procedure

  • Corneal flap is cut

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  • Laser sculpts the cornea

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  • Corneal flap is put back into place

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  • The LASIK procedure is complete

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Blade versus Bladeless LASIK

LASIK Surgery can be done using a surgical blade known as a microkeratome or blade-free LASIK. In Bladeless LASIK, also known as Femto LASIK, your surgeon uses two types of lasers for the vision correction procedure. First, an ultra-fast FEMTOsecond Laser is used to create a thin flap in the cornea, then an excimer laser is used to reshape the underlying corneal tissue to correct your vision.

The flap is then returned to its original position. The Femto laser eliminates the need for a bladed surgical tool to create the corneal flap.

ADITYA JYOT EYE HOSPITAL Selected the Alcon WaveLight Ex500 to ensure our patients have the most advanced technology available to provide the highest quality outcomes. It represents the state-of-the-art in Laser Eye Surgery. LASIK is the worlds most widely performed a procedure to offer a spectacle-free vision. This vision correction surgery is keeping pace with our increasingly faster lifestyle. But only a combination of years of experience and cutting-edge technology precision can ensure the safety of your valuable eye.

Speed & Precision

Each burst of the Alcon EX 500 Laser Lasts mere billionths of a second before the laser shifts to its next position-up to 100 times faster than some lasers. The Alcon EX 500 Laser uses a small-spot laser beam, which allows LASIK specialists to shape the cornea in finer, more gradual increments for a smoother surface with eye-tracking technology 8 times faster than some of the competition.

Simplicity & Personalized Procedure

The Alcon EX 500 Lasers integrated cross-line projector provides the surgeon with an exact alignment of the heads and eyes position by generating a red-light cross on the eye for accuracy.

Using advanced wavefront Optimized technology, the Alcon EX 500 laser creates a nap of your eyes and their unique characteristics to assist your surgeon in creating a personal vision profile for you.

LASIK FAQs

How long does the surgery take?

As in most of the patients, both eyes are treated in the same sitting, your procedure may last for 10 to 15 min

Is it painful?

LASIK is a pain-free procedure after putting anesthetic drops. some patients might feel pressure sensation for a few minutes.

When can normal daily activities be resumed?

You can resume your activities in 3-4 days time. Swimming and eye makeup should be avoided for one month.

How long should I be off contact lenses for LASIK workup?

One week for soft contact lenses and two weeks for RGP ( Rigid Gas Permeable ) contact lenses.

Is treatment permanent?

Yes, However you will need reading glasses once you reach presbyopic age.

Is LASIK safe?

LASIK is one of the safest surgeries in the human body. However, as with any medical procedure, there are certain risks involved which a candidate may understand and accept before surgery. please make sure you have discussed your case in detail with your surgeon and understood all aspects of the procedure

You may be a good candidate for Bladeless LASIK if you meet the following criteria
  • You are at least 18 years of age with a stable refraction for a year.
  • Your corneas are found appropriately shaped and thick on testing for LASIK.
  • Your pupils aren’t so large under dim light conditions to increase symptoms of glare and haloes.
  • You show no evidence of dry eyes.
  • You are not pregnant or breast feeding.
  • You don’t have any disease like diabetes or taking drip like retinoic acid or steroids which may impede healing after surgery.
  • While every patient may not be fit for surgery certain tests evaluating the corneal shape and thickness can determine if LASIK will work a patient. Knowing when not to operate is equally important to prevent complications after surgery. A thorough examination by our refractive surgeon also trained in corneal diseases will determine your fitness for LASIK surgery. An excellent, well-informed surgeon can make all the difference to your LASIK procedure outcome.

Myths about LASIK Surgery busted: Freedom from glasses in 5 minutes with Bladeless LASIK

38 year old Ashish Shah used glasses since he was a teenager and was apprehensive about undergoing LASIK surgery. His corneas were thin and steep and hence a conventional blade based procedure was not suitable for him. However the doctors found him fit for Bladeless LASIK. He underwent the pain free, bladeless LASIK and and was back to work within two days. He was able to see clearly without glasses within five minutes after the procedure.

Are you interested in laser vision correction surgery but are fearful of any bladed surgical instrument near the eye or are unfit for it? If so Bladeless LASIK may be the solution you are looking for.

LASIK has been around for 4 decades and millions of people have benefited from it. LASIK can be done using a surgical blade called as a microkeratome or completely bladefree. In Bladeless LASIK also called as Femto LASIK your LASIK surgeon uses two types of lasers for the vision correction procedure. First an ultra fastFemto second laser is used to create a thin flap in the cornea( clear from surface of the eye). Then an excimer laser is used to reshape the underlying corneal tissue to correct your vision. The flap is then returned to its original position. The Femto laser eliminates the need for a bladed surgical tool to create the corneal flap.

With the newer advanced LASIK techniques previously unfit patients may now be eligible for surgery. While every patient may not be fit for surgery, certain tests evaluating the cornea can determine if LASIK will work on a patient , says Dr. Kavita Rao, Director, Cornea, Cataract and LASIK Centre, at Aditya Jyot Eye Hospital, Wadala.

You may be a good candidate for Bladeless LASIK if

  • You are at least 18 years old .
  • Your eyeglass or contact-lens prescription has been stable for at least the last 12 months. It should be within acceptable limits to undergo laser vision-correction surgery and unlikely to change.
  • You don't have a disease or take medications that can impede healing. Certain conditions, such as lupus, rheumatoid arthritis, and diabetes, as well as drugs such as retinoic acid and steroids may prevent proper healing after laser vision surgery.
  • You are not pregnant or breast-feeding, as that can affect vision measurements.
  • Your corneas are found appropriately thick and shaped on testing for reshaping with LASIK.
  • Your pupils aren't too large under dim lighting conditions so that they increase your risk of postoperative night-vision symptoms such as glare, halos, and starbursts.
  • You have no history or signs of dry eyes, a condition that LASIK may aggravate.
  • You show no evidence of blepharitis, inflammation of the eyelids with crusting of the eyelashes, a condition that increases the risk of corneal infection or inflammation after LASIK

To know more about Bladeless LASIK:

Visit : Aditya Jyot LASIK Center at Aditya Jyot Eye Hospital, Plot No 153, Major Parmeswaran Road, Wadala West.

For queries, email: drkavitarao@gmail.com Call : 9833500580