When the conditions observed during the assessment of operability can not Femto-Lasik treatment (Cornea too thin, Kératopulgie, pre-existing dry eye syndrome), the surface technique will be proposed.
The EX500 laser sculpt the cornea after de-epithelialization of the surface. This safe technique, has proven results close to the technical Femto-Lasik.
The main disadvantages :
Postoperative pain.
Total recovery of vision between 4 and 6 weeks.
Discreet veil temporary scar always possible.