Why some surgeons do not offer SMILE or SILK
If you are researching laser vision correction you will have seen SMILE and SILK as well as LASIK and PRK. It is reasonable to wonder why some surgeons offer them and others do not. The short answer is that several good options exist, and the right one depends on your eyes and on what your surgeon can offer with confidence.
What are SMILE and SILK?
Both are “keyhole” or lenticule-extraction procedures. Instead of creating a flap (LASIK) or removing the surface layer (PRK), a laser shapes a small disc of tissue inside the cornea, and the surgeon removes it through a tiny opening. SMILE (small incision lenticule extraction) and SILK (smooth incision lenticule keratomileusis) use different laser platforms. SMILE uses one platform, and SILK uses another.
Why a surgeon may not offer them
There is no single reason, and none of the below means one option is poor.
- Equipment. Each procedure needs a specific laser, which is a major investment. Surgeons usually choose the platform they know best.
- Experience and learning curve. Lenticule extraction is technically different from flap-based laser. Surgeons often stay with techniques where they have the most experience and the best results.
- Range of treatment. Lenticule extraction is best established for short-sightedness with or without astigmatism. Treatment of long-sightedness is less established. Some corrections, such as for certain prescriptions, are more flexible with other techniques.
- Enhancements. If a touch-up is needed later, the options differ between procedures and may involve a different laser.
- Eye-tracking. The excimer laser used in LASIK and PRK tracks eye movement during treatment, whereas the lenticule laser relies on suction and docking. Some surgeons prefer one approach.
- Cost and access. Procedures differ in cost, availability and funding.
What the evidence says
Studies comparing SMILE with LASIK generally report similar visual results in suitable eyes. Some research suggests lenticule extraction may cause less dry eye in the early months. Research is ongoing, and long-term comparisons with newer techniques are still being gathered.
How to choose
The most useful questions are about you, not the brand of laser:
- Which procedures am I suitable for, and which are you recommending?
- What is your experience with this procedure?
- What are the risks and the chance I will need an enhancement?
- What happens if I need a further treatment in future?
A surgeon who explains why they recommend one procedure over another, and who is open about the alternatives, is a good sign. Seeking a second opinion is always reasonable.
This article is general information and is not a substitute for individual medical advice. All surgical and invasive procedures carry risks. Before proceeding you should seek a second opinion from an appropriately qualified health practitioner.
