SMILE is a keyhole laser eye surgery that corrects short sight and astigmatism by removing a tiny disc of tissue from inside the cornea through a small incision.
How SMILE works
A femtosecond laser creates a thin internal lens shaped piece of tissue and a short tunnel in the cornea. The surgeon gently removes this tissue through the tunnel, which changes the corneal shape so light focuses correctly on the retina.
- No large surface flap is needed like in LASIK
- May preserve more corneal strength and reduce dry eye risk
- Usually both eyes are treated in a single session
- The incision is only a few millimetres long
Recovery benefits and limits
Most people notice useful vision within a day or two and experience mild discomfort rather than significant pain. SMILE is currently mainly used for short sight and astigmatism, so other options may be better for long sight or complex prescriptions.
- Dryness and halos are still possible but often settle with time
- Return to desk work is usually quick with sensible breaks
- Protective advice on exercise and eye rubbing still applies
- Careful screening decides whether SMILE or another method suits you best
