September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Nanosecond laser-assisted vs Ultrasound phacoemulsification: a long-term, contralateral endothelial cell study.
Author Affiliations & Notes
  • IORDANIS DATSERIS
    Electronical Engineering, Democritus University of Thrace, Ilioupoli, Greece
    OMMA Ophthalmological Institute, Athens, Greece
  • Ioannis Datseris
    OMMA Ophthalmological Institute, Athens, Greece
  • George Asimellis
    Kentucky College of Optometry, Pikeville, Kentucky, United States
    Laservision.gr Clinical & Research Eye Institute, Athens, Greece
  • A. John Kanellopoulos
    Laservision.gr Clinical & Research Eye Institute, Athens, Greece
    Ophthalmology, NY University Medical School, NY, New York, United States
  • Footnotes
    Commercial Relationships   IORDANIS DATSERIS, None; Ioannis Datseris, Bayer (C), Novartis (C); George Asimellis, None; A. Kanellopoulos, Allergan (C), Avedro (C), i-Optics (C), ISP Surgical (C), Keramed (C)
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 1300. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to Subscribers Only
      Sign In or Create an Account ×
    • Get Citation

      IORDANIS DATSERIS, Ioannis Datseris, George Asimellis, A. John Kanellopoulos; Nanosecond laser-assisted vs Ultrasound phacoemulsification: a long-term, contralateral endothelial cell study.. Invest. Ophthalmol. Vis. Sci. 2016;57(12):1300.

      Download citation file:


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

      ×
  • Supplements
Abstract

Purpose : An alternative ultrasound phacoemulsification surgical technique for cataract surgery is evaluated. This technique utilizes novel coaxial nanosecond laser-assisted phacoemulsification. The purpose of this study was to contralaterally evaluate corneal endothelium cell density and morphology after coaxial ultrasound vs nano-second laser assisted phacoemulsification.

Methods : Eighty-two eyes subjected to uneventful cataract surgery with implantation of acrylic IOL. Each patient received ultrasound phacoemulsification (US) on one eye and coaxial nanosecond laser assisted (NL) on the other eye. Nuclear sclerosis was graded from NO3NC3 to NO4NC4 (Lens Opacities Classification System III).
Parameters analyzed pre-operatively and 2-years postoperatively: effective phacoemulsification time (EPT) for the US group and the number of laser pulses and total energy dissipated for cataract removal for the NL group. Endothelial cell density (ECD) and endothelial cell size variability were determined preoperatively and two years postoperatively. Endothelial structure was evaluated by measuring the central endothelial cell density (cells/mm2), coefficient of variation (CV) in cell size (an objective measure of polymegethism), and percentage of hexagonal cells, an index of pleomorphism (%HC).

Results : Mean EPT in the US group was 7.26±44 seconds. In the NL laser group average number of laser pulses was 243±188. Each laser pulse released 7.5 mJ (14 ns duration). The mean amount of energy dissipated into the anterior chamber was 1.83 J.
Mean ECD in the US group was preoperatively 2517±137 cells/mm2 and 2-years postoperatively 2287±155 cells/mm2 (p<0.001). In the NL group preoperatively 2521±233 cells/mm2 and 2-years postoperatively 2420±292 (p<0.001).
Mean CV in the US group was preoperatively 27.6±2.4 and 2-years postoperatively 30.6±2.4 (p<0.001). In the NL group, preoperatively 27.9±2.8 and 2-years postoperatively 27.2±2.0 (p<0.001).
Mean %HC in the US group was preoperatively 42.3±3.6 and 2-years postoperatively 37.74±3.54 (p<0.001). In the NL group, preoperatively 42.8±3.2 and 2-years postoperatively 43.00±2.68 (p<0.001).

Conclusions : Data in this study indicate that nanosecond laser-assisted cataract surgery phacoemulsification presents some advantages in comparison to ultrasound phacoemulsification in relation to endothelial cell structure preservation.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×