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G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic product A: PhysIOL consultant

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.

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G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic product A: PhysIOL consultant

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  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 architectureA 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;33:510-515 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 PhysIOLMicroCut • 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 20 G Step 1 Trapezoidal incision increases instruments mobility Step 2 Oblique introductionof the phaco Dewey tip MST (1.2mm) Step 3 Hydrochopper introduction (1mm)

  8. Thank you g.lesieur@iridisinnov.fr

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