May 2004
Volume 45, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2004
Efficacy of a Variable Aberration Correction Surgical Microscope System in Improving the Quality of Peripheral Fundus Images Seen during Vitreous Surgery through Prism–Type Contact Lenses
Author Affiliations & Notes
  • T. Noda
    National Institute of Sensory Organs, Tokyo, Japan
  • K. Ohno
    National Institute of Sensory Organs, Tokyo, Japan
  • Y. Fukuma
    Topcon Corporation, Tokyo, Japan
  • N. Kitajima
    Topcon Corporation, Tokyo, Japan
  • Y. Okazaki
    Topcon Corporation, Tokyo, Japan
  • H. Aeba
    Topcon Corporation, Tokyo, Japan
  • K. Nishio
    Topcon Corporation, Tokyo, Japan
  • K. Negishi
    Ophthalmology, Keio University School of Medicine, Tokyo, Japan
  • K. Ohnuma
    Engineering, Chiba University, Chiba, Japan
  • Footnotes
    Commercial Relationships  T. Noda, None; K. Ohno, None; Y. Fukuma, Topcon Corporation E; N. Kitajima, Topcon Corporation E; Y. Okazaki, Topcon Corporation E; H. Aeba, Topcon Corporation E; K. Nishio, Topcon Corporation E; K. Negishi, None; K. Ohnuma, None.
  • Footnotes
    Support  none
Investigative Ophthalmology & Visual Science May 2004, Vol.45, 2020. doi:
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      T. Noda, K. Ohno, Y. Fukuma, N. Kitajima, Y. Okazaki, H. Aeba, K. Nishio, K. Negishi, K. Ohnuma; Efficacy of a Variable Aberration Correction Surgical Microscope System in Improving the Quality of Peripheral Fundus Images Seen during Vitreous Surgery through Prism–Type Contact Lenses . Invest. Ophthalmol. Vis. Sci. 2004;45(13):2020.

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

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Abstract

Abstract: : Purpose: To evaluate the quality of peripheral fundus images observed through prism–type vitrectomy contact lenses using a surgical microscope equipped with a variable cross–cylinder and variable direct vision prism system (VCC/VDVP system). Methods: Resolution test charts placed on the peripheral fundus of the artificial model eye were observed experimentally through prism–type contact lenses (30°– and 45°–prism vitrectomy lenses) with a surgical microscope (OMS–610, Topcon) equipped with a computer–regulated VCC/VDVP system. According to the analysis data obtained by simulated geometric point spread functions, the aberrations were corrected with cylindrical lenses for astigmatism and variable prisms for chromatic aberrations in the surgical microscopy system. Results: Astigmatism and chromatic aberrations that substantially degraded the quality of the peripheral fundus images were corrected by the VCC/VDVP system and the resolution of the peripheral fundus observation during vitrectomy was markedly improved. Conclusions: Astigmatism and chromatic aberrations degrade the quality of peripheral fundus images observed through prism–type vitrectomy contact lenses. The quality of the fundus images during vitreous surgery is improved substantially by correcting these aberrations.

Keywords: imaging/image analysis: clinical • optical properties • vitreoretinal surgery 
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