Dr. Parul Sharma

Patient Feedback

Few Facts about Lasik-Refractive Surgery to remove Spectacle Power?
(Are you a good candidate for LASIK?)

If you're tired of wearing glasses or contact lenses, you may be considering Lasik Eye Surgery — one of the finest procedures to correct Spectacle Related Vision problems. Lasik option creates doubts & queries, so before you sign up for the Surgery, this article will help you get a clear picture of whether it is a good option for you or not and what you can expect.

Dr. parul sharma

Allegrato Lasik

Understanding Your Eyes?

To see clearly, light rays have to focus on the retina — a layer of light-sensing cells at the back of the eye. The retina converts the light rays into impulses that are sent to the brain, where they are recognized as images. If the light rays focus either in front or at back of retina , the image you see is blurry. This is called a refractive error. Glasses, Contact Lens and Refractive Surgery attempt to correct these errors by making light rays focus on the retina.

Dr. parul sharma

WaveFront Analyze

What is Lasik?

Lasik – Laser Assisted In Situ Keratomelieusis is a procedure by which the front mirror portion of Eye called Cornea is reshaped by laser to nullify Spectacle Power. The result of procedure is based on highly sophisticated computerized automated machine. A thin flap of Cornea is raised by microkeratome or Femto laser , and then a highly precise excimer laser is delivered on Cornea bed to reshape cornea at a microstructural level to correct refractive error,after which the flap is put back. There are no sutures or pain involved. It is a short duration walk in walk out procedure.

Am I a suitable candidate for Lasik?
  • You should be at least 19 years old.
  • Your Refraction ( glasses power) should have been stable for more then a year
  • You will have to undergo detailed Eye examination to decide if Lasikis Suitable for your Eyes - Corneal Thickness, Eye Pressure, Retina Examination etc.
  • You should not be Pregnant or Nursing as these conditions might change the measured Refraction of the Eye. It is best to wait for 6 months after delivery to get Lasik done.
  • You should be in good general health. Lasik may not be recommended for patients with Diabetes, Rheumatoid Arthritis, Lupus.
  • You should not have eye Diseases like Keratoconus, Glaucoma, Herpes Infections of the Eye, severe Dry Eye.
  • Understand your expectations from the Surgery. Are they realistic? Discuss all the pros and cons in detail with the Surgeon.
Can any Power be Corrected?
  • Myopia -1 to -8 can be safely treated. However with modifications in procedure and using advanced versions of software, powers upto -12 can be removed, These days we prefer to treat myopia above -8 to -20D with Phakic ICL implantation.
  • Hyperopia +1 to +6
  • Astigmatism 1 to 6
How is Lasik Done?

The procedure is done under topical anesthesia, ie, drops are used to make it painless. A hinged Corneal flap of 90 to140 um and 7.5 - 9.5 mm diameter is raised using a high precision instrument called microkeratome (high oscillating blade) or Femto (bladeless). Excimer Laser is then applied to the exposed stromal bed to reshape cornea as per the spectacles power.The flap is replaced, interface is washed and allowed to dry. This gets re-attached in few mins without any stitches. Thus there is virtually no wound and the patient is able to leave operation theatre without any pain, pad or bandage.

How Long does the Surgery take?

The procedure takes around 15 min, the actual laser treatment time being in seconds. It is a walk in walk out procedure with no Eye pad or bandage. Most of the patients resume normal activities next day.

How Safe is the Procedure?

Lasik is quite a safe procedure now. The high end Lasik Machines, Microkeratomes,Femto laser, advanced softwares, topo guided treatments etc have made this possible. One has to ensure that all selection criteria are meant. We are very stringent on that and if there is the slightest doubt of unpredictable result in an individual Eye, we motivate the patient to keep wearing his glasses or Contact Lens. Complications such as overcorrection, under correction, regression, inflammation, corneal haze, epithelial ingrowth, rarely flap related issues , ectasia and very rarely infection have been reported in literature across the world, but are few .Most of these can be managed well with timely intervention.

How Soon Does one Attain Visual Recovery following Lasik?

The visual recovery happens within a day and the fine focussing in 5-7 days. People resume work after 2 0r 3days. The post-operative eyedrops are required for 3-4 weeks, in reducing dosage. Initially there may beglare while night driving which settles down in few weeks.

What is the long term effect of this procedure on one’s Eye?

As much clinical data we have, shows that it has no side effects on other parts of eye in long term. The laser is done on front surface of the cornea and the studies have shown no effect on endothelium i.e. the back surface of cornea. It is important to keep the details of your original corneal mapping / scans as these will help to calculate correct lens power if you ever undergo cataract surgery in future.

Does the Correction Obtained after Lasik Last a lifetime? Is it true that I will not require any glasses whatsoever in future?

Yes, if the eye does not suffer any other disease and the corneal biomechanics are good, no glasses would be required. Few patients ,specially with high powers may have mild regression which means small powers coming back after few years. . Also the presbyopic changes will require you to wear reading correction around 45 years of age.

Can people between 40 & 60 yrs of age also get Lasik done?

Sure, they can. Though if you are above 45 yrs of age, Lasik can correct only your distant vision but you will still need reading glasses as & when required.

Can people between 40 & 60 yrs of age also get Lasik done?

Sure, they can. Though if you are above 45 yrs of age, Lasik can correct only your distant vision but you will still nead reading glasses as & when required.

What is the difference between LASIK & Femtobladeles LASIK? (link to bladeless lasik page)

We at Max Eye Care - Super Specialized Eye Institute of Max Healthcare have Victus –Bausch & Lomb Femto-Laser Machine & Allegrato Wave Excimer Lasik machine which is one of the fastest and most precise in the world. Option of creating customized bladeless cornea flap allows safety & precision . The Allegrato Wave Excimer Laser with the Aberrometer provides the most Advanced Wave front corrected Laser Vision technology available to date, designed to provide patients to achieve the best possible quality of vision ie more Contrast Sensitivity and Sharpness. I would summarize by saying that Lasik is an option vies a vis Spectacle or Contact Lens. It makes you free from dependence on them. You have to make a choice and once you decide, we execute and assure safe and precise procedure .