Promising new technology:
Although SMILE is a promising use of modern femtosecond laser technology, it does not currently extend the range of corneal laser vision correction. The current treatable range is slightly less than LASIK, since it cannot allow for the treatment of very low or very high corrections without significant modification in technique, and it is not quite as flexible as ASA, since additional tissue is necessary for the cap in a SMILE procedure. Although SMILE may be considered safer than LASIK in some patient profiles, since it still requires a lamellar corneal dissection, it is not considered quite as safe as modern Advanced Surface Ablation for either irregular, at risk, or thinner corneas.
Nevertheless, there are certain case uses which may benefit from this technology, and for these patients, we will recommend SMILE. Any enhancements after a SMILE procedure though will require either Advanced Surface Ablation or LASIK, and there are some restrictions with respect to the accuracy of astigmatic treatments due to the potential for cyclotorsion. Like any nascent technology, as the technology for SMILE improves, there will likely be more cases that may benefit from this technology.
1) Standard Refraction is determined using traditional refractive methods, Wavefront imaging is not yet available for SMILE, Topographic-Guided results are not yet available for SMILE
2) Femtosecond laser creates lenticule
3) Lenticule is dissected manually with an instrument
4) Lenticule is manually removed
Femtosecond Laser Technology
Our Surgeon is one of the first surgeons currently practicing in Canada with pioneering experience in Femtosecond laser technology since the first generation was introduced clinically in 2002. It is an extremely accurate, ultra-fast laser that functions at one quadrillionth (*10-15) of a second that allows tissue to be separated without damaging the surface and surrounding tissue. Our clinic currently uses the most recent and most sophisticated generation of Femtosecond lasers that can now go beyond creating a simple flap and is the basis for both SMILE as well as Femtosecond assisted lens-based surgeries.
How Femtosecond Laser Technology Works
This generation of lasers delivers rapid pulses of light through the surface of your cornea to a customized set of pre-programmed depths and positions within the cornea to create a microscopic bubble at each site. The laser moves across your eye creating a layer of microscopic bubbles that connect to form a custom sculpted corneal flap or corneal lenticule that compensates for natural variation in your corneal thickness, and the shape and size of your eye.