1. Epi-Lasik with the Epi-Head of the XP Microkeratome Pre Launch Evaluation Bernard Mathys, MD ASCRS Chicago, April 8, 2008

2. ASCRS Chicago 2008 www.drmathys.be NO FINANCIAL INTEREST

3. ASCRS Chicago 2008 www.drmathys.be Epi-Lasik Why Epi-LSK ? Technique Material & Methods

4. ASCRS Chicago 2008 www.drmathys.be Epithelial Healing Speed EpiLasik versus PRK

5. ASCRS Chicago 2008 www.drmathys.be VA recovery Speed EpiLasik versus PRK

6. ASCRS Chicago 2008 www.drmathys.be Results No changes at 3M & 6M No haze No regression All eyes = 20/20 85%: 1 line more 27%: 2 lines more No loss of BCVA

7. ASCRS Chicago 2008 www.drmathys.be 3 M after Epi-Lasik

8. ASCRS Chicago 2008 www.drmathys.be Questionnaire Confort / Disconfort ? Pain ? Visual recovery: slow ? fast ? Fluctuations ? Evaluation of the procedure: score ? Do it again or recommend it ?

9. ASCRS Chicago 2008 www.drmathys.be Answers Very confortable: 100% Pain: 8% Visual recovery: faster than expected: 88% Fluctuations: 60% for the first week, then 0 Evaluation: 96% + 4% - (pain ?) Do it again: 100% !

10. ASCRS Chicago 2008 www.drmathys.be Conclusion Safe device Excellent results Excellent option when Lasik not possible –Less induction of HOA than Lasik –Lamellar flaps weaken the cornea, much more than surface ablation Less pain & Haze than PRK/Lasek Same instrument as Lasik

11. Thank You