In short: Schwind ATOS SmartSight, SMILE, standard LASIK and Contoura-guided LASIK are all modern approaches to laser vision correction, but they differ in whether a corneal flap is created, how much corneal tissue is touched, and how quickly patients typically recover. At Trivision Eye Hospital, Bandra West, we offer Schwind ATOS SmartSight, Femto-LASIK and Trans-PRK — this guide explains how they compare so you can have an informed conversation with your surgeon.
What do "flapless" and "bladeless" actually mean?
Traditional LASIK creates a thin flap in the cornea, lifts it, reshapes the tissue underneath with a laser, and repositions the flap. "Bladeless" LASIK (Femto-LASIK) still creates this flap, but uses a femtosecond laser instead of a mechanical blade to do so. "Flapless" procedures — which include Schwind ATOS SmartSight and the SMILE category — go a step further: a femtosecond laser removes a thin lenticule of tissue from inside the cornea through a small incision, without ever lifting a flap.
How does SmartSight compare with SMILE?
SmartSight and SMILE are both flapless, lenticule-extraction techniques, differing mainly in the laser platform used (Schwind ATOS for SmartSight) and the specific software protocol. Both avoid the flap-related risks of LASIK and are associated with less disruption to the cornea's nerve structure, which is one reason flapless procedures often report less post-operative dry eye than flap-based alternatives.
Where does Contoura-guided LASIK fit in?
Contoura is a brand of topography-guided LASIK, which uses detailed corneal mapping to guide the laser treatment, aiming for a highly customised correction. It is still a flap-based procedure, so it carries the same general flap-related considerations as standard or Femto-LASIK, though the customisation can be valuable for patients with irregular corneal surfaces.
What about Trans-PRK?
Trans-PRK (Advanced Surface Ablation) takes a different approach entirely: no flap and no lenticule removal. A single laser pass reshapes the surface of the cornea after gently removing the outer epithelial layer. It is a "no-touch" procedure that tends to suit patients with thinner corneas or dry eyes who may not be ideal candidates for LASIK or lenticule-based techniques, though the epithelium takes a few days longer to heal than flap-based procedures.
Which procedure is right for me?
The honest answer is that no single procedure is universally "best" — the right choice depends on your corneal thickness, prescription, occupation, and personal priorities around recovery time versus long-term stability. A comprehensive evaluation, including corneal topography, is the only reliable way to determine which of these options — SmartSight, Femto-LASIK, or Trans-PRK — suits your eyes.
If you are exploring your options, book a consultation at Trivision Eye Hospital, Bandra West, and we will walk you through which approach fits your eyes and lifestyle.
What happens during the pre-operative evaluation?
Before recommending any of these procedures, our surgeons carry out a comprehensive evaluation that typically includes corneal topography (mapping the surface curvature of the cornea), pachymetry (measuring corneal thickness), a tear film assessment, and a detailed refraction to confirm your prescription is stable. Corneal thickness is a particularly important factor: patients with thinner corneas are sometimes better suited to Trans-PRK or ICL rather than a lenticule- or flap-based procedure, because those approaches remove or reshape less tissue relative to the corneal surface. This evaluation is the same starting point regardless of which of these four procedures you are ultimately considering, which is why an initial consultation rarely commits you to one specific technique in advance.
How does lifestyle factor into the decision?
Occupation and lifestyle genuinely influence which procedure a surgeon recommends. Patients in contact sports, the armed forces, or occupations with a higher risk of eye trauma are often counselled toward flapless options like SmartSight or no-touch options like Trans-PRK, since there is no flap that could theoretically be dislodged by a blow to the eye. Patients who spend long hours on digital screens sometimes lean toward flapless procedures because of the association with reduced post-operative dry eye. Meanwhile, patients with irregular astigmatism from a prior injury or corneal condition may be better candidates for topography-guided approaches like Contoura, which can correct for irregularities a standard treatment profile would not address as precisely.
What about cost and long-term stability?
All four approaches described here are permanent, one-time corrections to the cornea rather than an ongoing treatment, and all are performed using advanced laser platforms that require significant investment in equipment and calibration. We do not publish blanket pricing here because the right procedure, and therefore the cost, genuinely depends on your specific eyes — this is precisely the kind of detail best confirmed during an in-person evaluation rather than estimated in general terms online.
A note on realistic expectations
Every refractive procedure, however advanced, involves some healing time and a small possibility of needing a touch-up enhancement later if the initial correction does not fully meet the target. Discussing these realistic expectations honestly, rather than only the best-case outcomes, is part of what a thorough consultation should include — and it is exactly the kind of conversation our founder surgeons have with every patient before recommending SmartSight, Femto-LASIK, or Trans-PRK.
Questions worth asking at your consultation
Patients often find it useful to prepare a short list of questions before their evaluation: how thick are my corneas, and does that rule any procedure in or out; how stable has my prescription been over the last two years; what would recovery realistically look like given my job and daily routine; and what happens if I am not fully corrected after the first procedure. A surgeon who is confident in their recommendation should be able to answer each of these clearly and specifically to your own eyes, not in generic terms — that clarity is a good sign you are getting an honest, individualised recommendation rather than a one-size-fits-all pitch.