May 2006
Volume 47, Issue 13
ARVO Annual Meeting Abstract  |   May 2006
Monitoring the Placement of Panretinal Laser Photocoagulation in a Teaching Hospital Using the Optos Panoramic 200
Author Affiliations & Notes
  • G.A. Corrales
    Ophthalmology, UPMC, Pittsburgh, PA
  • T. Friberg
    Ophthalmology, UPMC, Pittsburgh, PA
  • S.K. Kurup
    Ophthalmology, UPMC, Pittsburgh, PA
  • Footnotes
    Commercial Relationships  G.A. Corrales, None; T. Friberg, None; S.K. Kurup, None.
  • Footnotes
    Support  NIH Grant P30–EY008098, Research to Prevent Blindness, The Eye and Ear Foundation (Pittsburgh)
Investigative Ophthalmology & Visual Science May 2006, Vol.47, 971. doi:
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      G.A. Corrales, T. Friberg, S.K. Kurup; Monitoring the Placement of Panretinal Laser Photocoagulation in a Teaching Hospital Using the Optos Panoramic 200 . Invest. Ophthalmol. Vis. Sci. 2006;47(13):971.

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

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Purpose: : To determine in a feasibility study whether panretinal laser placement can be assessed with a single ultrawide (200°) fundus image. The Optos Panoramic 200TM utilizes Scanning Laser Ophthalmoscope technology to effectively capture ultra–wide field, high resolution images (2000x2000 pixels) of the retina.

Methods: : Ten consecutive patients (10 eyes) underwent ultrawide angle imaging after receiving conventional panretinal photocoagulation by various laser surgeons at least 2 weeks previously. In a masked manner, these images were assessed by an independent observer to determine whether photocoagulation was complete. We deemed treatment to be complete if we could detect 1,100 +/– 100 laser spots distributed evenly across the entire 200–degree Optos picture. Patients who had vitreous hemorrhage were excluded.

Results: : In 4 out of 10 patients, areas of inadequate treatment, sometimes called "skip areas," could be identified. The average number of lesions in eyes deemed fully treated was 998 with a standard deviation of 74.6. In cases where treatment was deemed inadequate on imaging and/or clinical basis, additional photocoagulation was performed.

Conclusions: : Ultrawide angle imaging using the Optos P200 may have a special value in the monitoring of the completeness of PRP in a teaching institution. Skip areas can be easily demonstrated in a subjective manner to allow an accurate description of exactly where additional treatment should be directed if needed

Keywords: retina • clinical (human) or epidemiologic studies: systems/equipment/techniques 

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