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Helga P. Sandoval, M.D., M.S.C.R., Mohamed A. Guenena, M.D., Kerry D. Solomon, M.D.

Scanning Electron Microscopy Evaluation of Corneal Residual Beds Created by a 5 th Generation of Femtosecond Laser. Helga P. Sandoval, M.D., M.S.C.R., Mohamed A. Guenena, M.D., Kerry D. Solomon, M.D. Magill Research Center - Storm Eye Institute Medical University of South Carolina

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Helga P. Sandoval, M.D., M.S.C.R., Mohamed A. Guenena, M.D., Kerry D. Solomon, M.D.

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  1. Scanning Electron Microscopy Evaluation of Corneal Residual Beds Created by a 5th Generation of Femtosecond Laser Helga P. Sandoval, M.D., M.S.C.R., Mohamed A. Guenena, M.D., Kerry D. Solomon, M.D. Magill Research Center - Storm Eye Institute Medical University of South Carolina Charleston, South Carolina, USA Financial Disclosure: None of the authors has any financial interest in any product mentioned herein Helga P. Sandoval: Alcon Laboratories, Inc. - D; Allergan, Inc. - D; Abbott Medical Optics - D Mohamed A. Guenena: None Kerry D. Solomon: Alcon Laboratories, Inc. - A,C,D; Allergan, Inc. - A,C,D; Abbott Medical Optics - A,C,D; Advanced Vision Research -  A,C,D; Bausch & Lomb, Inc. -  A,C,D; Eyemaginations -  A,C,D; QLT, Inc. -  A,C,D

  2. 5th Generation Femtosecond Laser • Higher repetition rate • Tighter spot separation • Faster procedure time • Lower energy • Customized flap shapes • Expanded bevel-in side cut angles

  3. 5th Generation Femtosecond Laser

  4. Purpose • To evaluate the smoothness of the corneal residual bed after the flap creation using a 5th generation femtosecond laser (iFS Advanced Femtosecond Laser, Abbott Medical Optics, Inc)

  5. Methods • 5 fresh cadaver eyes, tissue not suitable for transplantation • 5th generation femtosecond laser settings:

  6. Methods • Flap and residual bed were fixed using 2% cacodylateglutaraldehyde and processed for SEM evaluation. • The residual bed surfaces as well as the posterior face of the flap and edges were examined. • Standardized photographs were taken.

  7. Results • Mean donor age was 78.3 ±10.7 years • Mean time from dead to preservation was 10:31 ±5:37 hours • No complications during flap creation

  8. Results SEM picture of eye 1OD

  9. Results SEM picture of eye 2 OS

  10. New 5th generation femtosecond laser provides smoother residual bed than previous version. This may translate into: Better visual outcomes Less induction of high order aberrations Higher patient satisfaction Further clinical studies are necessary. Conclusion

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