May 2005
Volume 46, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2005
Newly–Developed Multicoated Quartz Contact Lens for Bimanual Vitreoretinal Surgery
Author Affiliations & Notes
  • C. Shiina
    Ophthalmology, Juntendo Univ. Urayasu Hospital, Urayasu, Japan
  • M. Tanaka
    Ophthalmology, Juntendo Univ. Urayasu Hospital, Urayasu, Japan
  • Y. Takizawa
    Ophthalmology, Juntendo Univ. Urayasu Hospital, Urayasu, Japan
  • M. Suami
    Ophthalmology, Juntendo Univ. Urayasu Hospital, Urayasu, Japan
  • A. Mizota
    Ophthalmology, Juntendo Univ. Urayasu Hospital, Urayasu, Japan
  • A. Murakami
    Ophthalmology, Juntendo Univ. School of Medicine, Tokyo, Japan
  • Footnotes
    Commercial Relationships  C. Shiina, None; M. Tanaka, None; Y. Takizawa, None; M. Suami, None; A. Mizota, None; A. Murakami, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2005, Vol.46, 5496. doi:
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    • Get Citation

      C. Shiina, M. Tanaka, Y. Takizawa, M. Suami, A. Mizota, A. Murakami; Newly–Developed Multicoated Quartz Contact Lens for Bimanual Vitreoretinal Surgery . Invest. Ophthalmol. Vis. Sci. 2005;46(13):5496.

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

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Abstract

Abstract: : Purpose:To describe the advantages of a newly–developed multicoated quartz contact lens for use in bimanual three port or two port vitrectomy systems. Methods: The lens is made from quartz with a refractive index of 1.46 and an Abbe number of 67.7. The lens is a three layer coated, plano–convex with a 20° prism. The transmittance of light is 96.5% which yields a brighter fundus field of 7.02 mm in diameter (HOYA Tokyo). Vitreous surgery was performed under operating microscope with a slit–lamp microscope (Leica or Zeiss). This system was used for vitrectomies in eyes with proliferative diabetic retinopathy (PDR) or for proliferative vitreoretinopathy (PVR). Results: No reflection of the microscope light from the contact lens was observed. The visual field of view was slightly restricted, however the brightness was nearly the same as that with light pipe illumination. The X–Y control system of the microscope was used to compensate for the reduced visual field. There was no need to change the angular direction of the slit–lamp illumination when fixed to 7°. The bimanual system allowed us to remove proliferative tissues of PDR and PVR cases more easily and safely. Conclusions:Our vitrectomy system with a new contact lens and slit–lamp illumination should be beneficial for vitreoretinal surgery.

Keywords: retinal detachment • diabetic retinopathy • proliferative vitreoretinopathy 
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