SMILE is the most advanced, flapless, bladeless, all-femtosecond laser procedure that is currently available only on the Carl Zeiss Visumax laser platform. It can correct myopia of upto -10 D and astigmatism of upto 5D at present.

It involves carving out a lenticule or disc in the middle of the cornea with a femtosecond laser and then removing this lenticule out through a laser-made keyhole incision.

relex smile procedure



step1- relex smile

The refractive lenticule and small incision are created inside the intact cornea all in one step


step2- relex smile

The lenticule subsequently removed through this small incision, leaving the remainder of the superficial cornea intact


step3- relex smile

Removing the lenticule changes the shape of the cornea, thereby achieving the desired refractive correction


Since a corneal flap is not made in the procedure, it does away with a lot of risks and complications of flap creation like:

  • Dry eye is significantly lesser with SMILE than with LASIK
  • Corneal nerves and corneal sensations are better preserved with SMILE than with LASIK
  • Flap complications like folds in the flap, displacement of the flap, buttonholes or complete cutting of the flap do not occur with SMILE
  • The strength and structure of the cornea is preserved better with SMILE than with LASIK. The flap made in LASIK weakens the front of the cornea and cannot contribute to its strength in the future. A flapless procedure like SMILE is preferred for moderately high errors to provide better strength to the cornea in the longterm.
  • Minimally invasive- 2 mm wound compared to 20 mm wound in LASIK. This results in more rapid recovery to routine activities


  • Takes 15 minutes for both eyes
  • Numbing drops/ topical anesthesia used- no injection, no patch, no pain, no stitches, no blood
  • One has to lie down for the duration of the procedure
  • Eye is kept open and cannot be closed by the patient
  • Doctor’s instructions are to be followed during the procedure
  • Right eye is followed by left eye treatment
  • Procedure is over before you realize, with no pain!
  • Goggles are given

  • Expect to see blurry and experience some watering, irritation on the day of treatment
  • It gets better the next day
  • Vision is usually 90-95% on the next day and gets better over next 3-4 days
  • Eye Drops for 2 weeks only
  • No water in the eyes and head bath for 3-4 days
  • Protective sunglasses outdoors for a week
  • Side-effects: Glare, light sensitivity, night vision blurry

These are common and gradually get better over few weeks.


Before Surgery

1. Stop wearing soft lenses 1 week before surgery
2.Stop wearing rigid gas permeable lenses 2/3 weeks before surgery

Do's After Surgery

1. Use eye drops clean your eyelid margins|
2. Plenty of rest
3.Watch TV & read books 1 day after Consume Healthy food

Dont's After Surgery

1. Don't expose your eyes to dust/smoke
2. Don't keep eyes open for too long
3. Don't swim till your doctor approves
4. No touching/ rubbing eyes
5. No strenuous activity
6. Don't drive on the day of surgery

Pros of ReLEx SMILE

fda approved- relex lasik

FDA approved

bladeless- relex lasik


flapless- relex lasik


painless- relex lasik


fast recovery- relex lasik

Fast Recovery

no dry eyes- relex lasik

No Dry Eyes

stronger cornea- relex lasik

Stronger Cornea


How is smile different from other refractive procedures?

Unlike in all other laser eye surgery procedures, the corneal tissue is not eroded using an excimer laser. ReLEx SMILE is totally laser operated procedure that uses proved Femto second laser technique which means it is absolutely flapless and bladeless. Quick procedure and early recovery are among the other key advantages that SMILE has over other conventional procedures.

How long does SMILE Procedure take?

The entire procedure gets over in less than 12 minutes for both the eyes. Short duration and early recovery are amongst the many benefits that come with the advanced procedure called SMILE.

What are the chances of dry eyes?

According to studies SMILE is less harmful and preserves most of the nerves while LASIK having a big Flap (18mm) makes significant changes to the corneal nerve. Hence chances of dry eyes in case of SMILE are lesser than in LASIK.

Can I start working on my laptop immediately after SMILE?

Unlike Lasik, SMILE is gentler to eyes, so you can start working on computers within a day of surgery. But you may need to go a bit easy for initial few days, by taking frequent breaks and using the prescribed eye drops regularly.

When can I start wearing eye make-up after undergoing SMILE?

You can start wearing eye Make-up and do beauty parlor treatments after a week’s time (after having checked with your doctor on your post treatment visit). It is advisable to use cosmetics that you used before surgery to ensure that you are not allergic.

Am I eligible to donate my eyes after undergoing SMILE?

Yes. SMILE is not a reason for any of the risk factor related to eye donation.

Will SMILE be an obstruction for conducting Cataract treatment in later years of life?

No. However, it is good to keep your cataract doctor informed about the SMILE treatment. There is neither any hindrance to surgery nor does it affect the outcome of surgery.

How soon can I resume back to my work after undergoing SMILE?

You are required to rest on the day of surgery and may need to take rest for a day or two before returning to work.

When do I need to discontinue wearing contact lenses prior to LASER Procedure?

You should discontinue wearing soft lenses 8 days before the LASER Procedure. (15 Days for RGP lenses)

Can both eyes be treated with laser at same time?

Yes, laser procedure can be done for both eyes at the same time.

Will I be awake during the procedure?

You will be awake during the entire procedure. Due to anesthetic drops in your eyes, you will fell numbness or little heaviness in eyes. No pain sensation is felt during the procedure.

Is it a permanent treatment?

This is a permanent treatment.

Will I still need to wear reading glasses after the laser procedure?

As the person’s age increases, ability of the eye to focus on nearby objects decreases. This being an age related process is irreversible. Hence everyone above 40 years will need reading glasses even after the laser procedure. But your distance vision will remain corrected.

Is there any diet restriction?

No, there is no diet restriction. You can have a normal diet.

Can I wear cosmetic contact lenses and eye makeup after laser?

You can start wearing eye makeup and do beauty parlor treatments after 1 week. Cosmetic contact lenses can be worn after consultation with your surgeon.

Will I need to sit in a dark room after the laser?

No, it is not advisable to sit in a dark room. Average home light is alright. In fact you can start watching TV, reading, and normal routine as soon as you are feeling comfortable.