G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic product A: PhysIOL consultant
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Transcript of G. LESIEUR ALBI P: Royalty from a PhysIOL ophthalmic product A: PhysIOL consultant
Experimental evaluation of Experimental evaluation of various disposable micro-various disposable micro-
incision knives in incision knives in comparaison to a diamond comparaison to a diamond
knifeknife
G. LESIEUR
ALBI
P: Royalty from a PhysIOL ophthalmic productA: PhysIOL consultant
E: Travel expenses reimbursed by Bausch and Lomb
Wound architectureWound architectureA A bad architecture can be bad architecture can be
encountered in biaxial as well as in encountered in biaxial as well as in coaxialcoaxial
Minicoaxial Incision C-MICSBiaxial Incision B-MICSJ.P BerdahlJ.P Berdahl
Corneal wound architecture and integrity after phacoemusification J Corneal wound architecture and integrity after phacoemusification J Cataract Refract Surg 2007;33:510-515Cataract Refract Surg 2007;33:510-515
less stress in « minicoaxial »? but Asp Rate 12cc/mnless stress in « minicoaxial »? but Asp Rate 12cc/mn
MethodMethod
► MicroCutMicroCut► Disposable Trapezoidal BladeDisposable Trapezoidal Blade► Multisize incision 1.2/1.8/2.2/2.4mmMultisize incision 1.2/1.8/2.2/2.4mm► Adapted for micro <2mm and mini Adapted for micro <2mm and mini
incisions between 2 and 2.8mmincisions between 2 and 2.8mm
Prospective and comparative studyProspective and comparative study 20 Diamond, 20 MicroCut, 16 Intrepid and 20 Kai MICS 20 Diamond, 20 MicroCut, 16 Intrepid and 20 Kai MICS
KnivesKnives
► Measuring penetration and cuttingMeasuring penetration and cutting► 0.4 micron polyurethane film0.4 micron polyurethane film► Results expressed in NewtonResults expressed in Newton
ResultsResults
00,20,40,60,8
11,21,4
Penetration Cutting
DiamondMicrocutIntrepidKai
◊Best penetration (less force required) with Kai and PhysIOL MicroCut Knives◊Best cutting (less force required) with Diamond, Kai and Alcon Intrepid Knives
ResultsResults PenetrationPenetration MicroCut better than Diamond MicroCut better than Diamond p<0.001p<0.001 Kai better than Diamond Kai better than Diamond p<0.001p<0.001 CuttingCutting Diamond better than Kai, Intrepid and MicroCut Diamond better than Kai, Intrepid and MicroCut p<0.001p<0.001
PhysIOLPhysIOL MicroCutMicroCutExcellent penetration Excellent penetration Control of incision enlargementControl of incision enlargementValid alternative to the diamond Valid alternative to the diamond knifeknife
How to avoid incision injury?How to avoid incision injury?
Posterior stromal tear Descemet tear
Step 1 Trapezoidal incision increases instruments mobilityStep 2 Oblique introduction of the phaco Dewey tip MST (1.2mm)Step 3 Hydrochopper introduction (1mm)
3 steps for incision integrity3 steps for incision integrity
20 G
Thank youThank you