May 2004
Volume 45, Issue 13
ARVO Annual Meeting Abstract  |   May 2004
Custom Ablation with the Nidek Navex System
Author Affiliations & Notes
  • D. Epstein
    Augenklinik, UniversitaetsSpital Zurich, Zurich, Switzerland
  • P. Vinciguerra
    Istituto Humanitas, Milano, Italy
  • F. Camesasca
    Istituto Humanitas, Milano, Italy
  • Footnotes
    Commercial Relationships  D. Epstein, None; P. Vinciguerra, Nidek C, P, R; F. Camesasca, None.
  • Footnotes
    Support  none
Investigative Ophthalmology & Visual Science May 2004, Vol.45, 162. doi:
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      D. Epstein, P. Vinciguerra, F. Camesasca; Custom Ablation with the Nidek Navex System . Invest. Ophthalmol. Vis. Sci. 2004;45(13):162.

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

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Abstract: : Purpose:To evaluate the new Nidek Navex custom ablation system. Methods:The Navex platform includes the OPD scan aberrometer, the CATz spherical aberration control feature, and tracker which also monitors cyclodeviation. 125 eyes of 72 patients with a mean age of 34 years underwent LASEK with this system. Mean preoperative spherical equivalent (SE) refraction was –5.84D ± 2.49D. Best spectacle corrected visual acuity (BSCVA) was 20/20 or better in 77% of the eyes. Customized treatment was planned with the Final Fit software, and the data transferred to a Nidek EC 5000 excimer laser.Results: At 6 months postoperatively, 90% of eyes were within 0.50D of attempted correction. Mean residual error was –0.15D ± 0.47D (SE). All eyes attained an uncorrected visual acuity (UCVA) of 20/20 or better. No eye lost 2 or more Snellen lines of BSCVA. There was no increase in spherical aberration, coma or higher order aberrations for 3–mm pupils and only a marginal increase for 5–mm pupils. Conclusions:Custom LASEK with the Navex system provided excellent safety, predictability and efficacy. The percentage of eyes with an UCVA of 20/20 or better postoperatively was markedly higher than that documented for BSCVA preoperatively. It is especially interesting to note that high order aberrations did not increase postoperatively for 3–mm pupils and only insignificantly for 5–mm pupils.

Keywords: refractive surgery • cornea: clinical science • refractive surgery: other technologies 

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