December 2002
Volume 43, Issue 13
ARVO Annual Meeting Abstract  |   December 2002
Scanning Electron Microscopic Study Of Four Types Of Microkeratome Blades Used For LASIK Surgery
Author Affiliations & Notes
  • ME John
    Chicago Cornea Resarch Center Tinley Park IL
  • T John
    Ophthalmology Loyola University at Chicago Maywood IL
  • R Foulks
    Ophthalmology University of Illinois Chicago IL
  • Footnotes
    Commercial Relationships   M.E. John, None; T. John, None; R. Foulks, None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 2089. doi:
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      ME John, T John, R Foulks; Scanning Electron Microscopic Study Of Four Types Of Microkeratome Blades Used For LASIK Surgery . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2089.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract: : Purpose: To describe the findings od scanning electron microscopic study of 4 types of microkeratome blades after they were used once on patients undergoing LASIK surgery. Methods: The 4 types of microkeratome blades were: Gr. 1 = Amadeus; Gr. 2 = Moria M2; Gr. 3 = BDK-3000; Gr. 4 = Moria CBQ 104. Five blades in each group (total blades = 20). Each of the blades were measured from the plastic mount to the blade sharp edge in the left, center and right side. Total scanning electron micrographs studied were 60. Additionally the bevel of each blade was measured using SEM. All images were calibrated at 25x using the SEM standard for all the blade measurements. Higher magnification images were obtained for qualitative study of the materials on the blade surface after use in LASIK surgery. The blades were sputter coated with Au-Pd target in the Polaron E5 1000 Series II unit and examined in the Joel JSM-840A SEM. Results: The average blade length (mm) in the various groups: Gr. 1 = 4.380.019; Gr. 2 = 3.780.065; Gr. 3 = 4.350.088; Gr. 4 = 4.100.078. The height of bevel measurements (mm) were: Gr. 1 = 0.950.06; Gr. 2 = 1.000.06; Gr. 3 = 0.940.06; Gr. 4 = 1.010.03. There were no cellular remnants seen. Crystalline deposits from the irrigating solution were seen in some of the blade surfaces. Conclusion: The blade lengths and bevel heights in all the groups of microkeratome blades that were studied are very consistent. This provides for safer LASIK surgery using these microkeratome blades.

Keywords: 544 refractive surgery • 548 refractive surgery: LASIK • 546 refractive surgery: comparative studies 

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