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Experimental evaluation of various disposable micro-incision knives in comparaison to a diamond knife G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic.

Published byTobias Geier Modified over 6 years ago

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Presentation on theme: "Experimental evaluation of various disposable micro-incision knives in comparaison to a diamond knife G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic."— Presentation transcript:

1 Experimental evaluation of various disposable micro-incision knives in comparaison to a diamond knife G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic product A: PhysIOL consultant E: Travel expenses reimbursed by Bausch and Lomb

2 Wound architecture A bad architecture can be encountered in biaxial as well as in coaxial
Biaxial Incision B-MICS Minicoaxial Incision C-MICS J.P Berdahl Corneal wound architecture and integrity after phacoemusification J Cataract Refract Surg 2007;33: less stress in « minicoaxial »? but Asp Rate 12cc/mn

3 Method Prospective and comparative study
20 Diamond, 20 MicroCut, 16 Intrepid and 20 Kai MICS Knives MicroCut Disposable Trapezoidal Blade Multisize incision 1.2/1.8/2.2/2.4mm Adapted for micro <2mm and mini incisions between 2 and 2.8mm Measuring penetration and cutting 0.4 micron polyurethane film Results expressed in Newton

4 Results Best penetration (less force required) with Kai and PhysIOL MicroCut Knives Best cutting (less force required) with Diamond, Kai and Alcon Intrepid Knives

5 Results Penetration MicroCut better than Diamond p<0.001
Kai better than Diamond p<0.001 Cutting Diamond better than Kai, Intrepid and MicroCut p<0.001 PhysIOL MicroCut Excellent penetration Control of incision enlargement Valid alternative to the diamond knife

6 How to avoid incision injury?
Posterior stromal tear Descemet tear

7 3 steps for incision integrity
Step 1 Trapezoidal incision increases instruments mobility Step 2 Oblique introduction of the phaco Dewey tip MST (1.2mm) Step 3 Hydrochopper introduction (1mm)

8 Thank you

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