Laser Eye Surgery

Smile Beyond Lasik

Laser surgery techniques for refractive vision correction were well established, both
scientifically and clinically, by the mid-80s.

A life without Glasses – The different Laser Treatment options

Laser surgery techniques for refractive vision correction were well established, both scientifically and clinically, by the mid-80s. The basic principle behind all the methods is using a laser to model the outer corneal layer so that the focal point of the bundled incidental light is on the surface of the retina itself and not in front of or behind it.


The original treatment methods, PRK and LASEK, manually removed the outer protective layer (epithelium) of the cornea before the laser surgery. The consequences often included postoperative pain and the very slow recovery of visual acuity. As a consequence, laser surgery techniques that involved preparing a corneal flap (LASIK and Femto-LASIK) were then developed. Smile eye surgery is an advanced laser treatment that has many benefits.

Here, a mechanical cutting tool (microkeratome) or a femtosecond laser is used to create a thin flap of the cornea which is just 120 micrometers thick. Almost a complete circle (270°) is cut in the upper layers of the cornea. The flap is then folded back like the cover of a book. Subsequently, the exposed corneal tissue is then ablated using an excimer laser in a separate stage of treatment. The greater the level of vision defect, the more tissue needs to be removed. In the final stage of treatment, the corneal flap is then folded back into its original position.

It then adheres in the original place over the coming weeks and months. The disadvantage is that the flap can shift or even tear off (flap displacement) as the result of rubbing or other physical contacts after the operation.

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The Smile Principle:

Smile laser surgery enhances the advantage over the corneal layers. The eye sightedness is corrected without a single blade cut of corneal layers. This makes the patient feel painless during laser surgery. SMILE laser method makes zero intact on operating the cornea. SMILE is chosen to be the best conventional laser treatment as it gives high precision results. The Eye Foundation attains the best surgery outcome with zero tolerance through SMILE

The Treatment Steps







The Benefits of Smile

With Smile laser, Surgeons get the maximum satisfaction in their surgery activities. Patients derive the best benefits when compared to other laser treatments as the surgery takes a very short time. Also, patients have a fast recovery post-surgery. Smile has the highest vision defect correction. Below mentioned are the benefits that are derived using SMILE.

Flapless treatment

  • Flap incision is drastically reduced to 80% of the invasion when compared to LASIK and Femto-LASIK
  • Easy to stabilize the Outer Corneal layers and zero damage of protective corneal layer is achieved
  • Tear regulating cornea nerves are completely undisturbed at the time of surgery and post-surgery
  • Patient feels zero during and post-operation

Entire Treatment Carried out Using Femtosecond Laser (All-Femto)

  • Deriving high precision results even from complicated surgeries
  • Severe myopia ( more than -7 D) can be treated to give excellent results
  • The risk-free operating method as it eliminates the chances of vision loss
  • Complete odourless treatment compared to other operative methods
  • Recovery of original visual acuity is achieved within 14 days
  • No compression on the cornea is made at the time of surgery

Single-Step Treatment

  • Shortest procedure time
  • One Time Surgery for all the laser corrections
  • No need for shifting of operative devices

Top 5 Reasons to Smile

  • Minimally Invasive Procedure – SMILE treatment for eyes requires only a small incision(2-4mm), this gentle procedure means low infection and no flap detachment.
  • Quick & Simple – It takes only a few minutes from start to finish in the SMILE laser eye surgery to reshape your cornea and is used for only about 30 seconds.
  • Rapid Visual Recovery – Most people return to their normal activities the very next day.
  • Eye Strength – Results in long-term eye strength and corneal stability.
  • Freedom from Lenses – ReLex SMILE eliminates your need for glasses and contacts.

Precise and sensitive treatment “VisuMax femtosecond laser”

The specially developed laser system used for the Smile procedure is the Carl Zeiss VisuMax® femtosecond laser. In Femto-LASIK surgery it has already impressed patients and physicians alike with its sophisticated technology, its precision and its reliability. Smile now permits accuracy down to nearest micrometer precision in the preparation of the lenticule within the intact cornea.

VisuMax Femtosecond Laser enables to carry out the vision defect correction at a higher precision with zero impact on the corneal tissues. Unnecessary compression on the tissue and temporary loss of vision is eliminated when the specially designed contact glass is made to match the cornea

Femtosecond laser treatment enhances the patients to feel relaxation and comfort during the surgery.

An ergonomically designed and functionally versatile patient supporting system provides extra comfort and relaxation during treatment. The position of the patient is continuously monitored during the SMILE eye surgery procedure and automatically adjusted and corrected, if necessary.

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Frequently Asked Questions on Smile

What Makes Smile So Special?

The corneal tissue is untouched during the entire procedure of vision correction. ReLex Smile strictly uses Femtosecond laser which is the approved technology. The Femtosecond laser creates a small lenticule inside the intact cornea The access point is made few millimetres across the cornea to remove the lenticule. ReLex Smile laser eliminates the need of opening the corneal layers unlike the operative procedure of LASIK and Femto-LASIK. Also, PRK or LASEK methods do not create flaps in the cornea.

How Do These Procedures Differ From Smile?

In PRK and LASEK procedures, the top layer of the cornea (epithelium) is removed manually. The exposed deeper layers of the cornea are then ablated using an excimer laser. The disadvantages: there is significantly greater pain after the operation, and the healing process and the stabilization of visual acuity take a relatively long time. PRK and LASEK are not recommended for the treatment of severe nearsightedness. The risk of scarring (haze) is significantly higher. Smile combines the benefits of PRK and LASEK (no flap incision) with those of LASIK and Femto-LASIK (minimum discomfort and rapid restoration of visual acuity) – but without any of their disadvantages.

How Much Experience Has Got Into Smile?

Since 1846, Carl Zeiss did not make any compromise in Optic Quality and Precision. Carl Zeiss has launched the first excimer laser in 1986 for eye refractive correction. The company has been the pioneer in Vision defects correction for the last 25 years. The success of Femtosecond explains its proven clinical value that has served over many years. Since 2006, the controlled clinical studies of refractive lenticule extraction is being performed. ReLex Smile Laser technology is widely been followed and practised in many countries in the world. ReLex Smile has been chosen as the standard laser treatment for vision defect corrections.

How Can I Find Out If I Am Suitable For Smile?

As with all other vision correction methods, you will have to undergo a detailed eye examination. The nature and degree of ametropia, the curvature and thickness of the cornea, as well as many other factors play a role. Your ophthalmologist will advise you personally after conducting a detailed examination.

After Smile, how long will it be before I can see properly without glasses or contact lenses and return to my normal routine?

Every healing process is different. In most cases visual acuity is very good one or two days after the operation and stabilizes within two to three weeks. Following PRK or LASEK, by comparison, full recovery can take up to three months. After Smile, you will generally be able to drive, work and do sports without glasses or contact lenses just a few days following treatment.

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