December 2002
Volume 43, Issue 13
ARVO Annual Meeting Abstract  |   December 2002
Wide Field Angiography
Author Affiliations & Notes
  • F Viola
    Department of Ophthalmology University of Brescia Brescia Italy
  • G Staurenghi
    Department of Ophthalmology University of Brescia Brescia Italy
  • R Graham
    Ocular Instruments Inc Bellevue WA
  • P Harrington
    Ocular Instruments Inc Bellevue WA
  • M Mainster
    Department of Ophthalmology University of Kansas Medical Center Kansas City KS
  • Footnotes
    Commercial Relationships   F. Viola, None; G. Staurenghi, Ocular Instruments, Inc. P; R. Graham, Ocular Instruments, Inc. E; P. Harrington, Ocular Instruments, Inc. E; M. Mainster, Ocular Instruments, Inc. C.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 2511. doi:
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    • Get Citation

      F Viola, G Staurenghi, R Graham, P Harrington, M Mainster; Wide Field Angiography . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2511.

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

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Abstract: : Purpose: Confocal scanning laser ophthalmoscopes (SLOs) provide high-resolution reflectance and angiographic fundus images. A typical field size for the Heidelberg Retinal Angiograph (HRA, Heidelberg Engineering GmbH, Dossenheim, Germany) is 30º x 30º. Mosaic images can be computed for retinal fields of view of 120ºat best, but larger fields facilitate monitoring and documenting regional and panretinal disorders. We designed and constructed a wide-field, inverted image, contact ophthalmoscopy lens for use with the HRA. Methods: Lens calculations were performed using the OSLO optical design program (Release 6.1, Lambda Research Corporation, Littleton, MA, USA) and a modified Le Grand-El Hage unaccommodated theoretical eye model. Optimized anti-reflection coatings reduced reflections to 0.1% for 514-nm red-free and 830-nm infrared reflectance images. Reflections for fluorescein and indocyanine green angiography were insignificant. Results: The SLO wide field contact lens (Staurenghi Wide Field SLO lens, Ocular Instruments, Inc., Bellevue WA, USA) provides a high-resolution instantaneous field of view of 150ºwith a lateral magnification of 0.23x. We examined patients with a wide variety of retinal problems including diabetic retinopathy, retinoschisis, retinal detachment, inflammatory retinal disease, retinitis pigmentosa and other retinal inherited diseases. Conclusion: A wide field, inverted image, contact ophthalmoscopy lens facilitates observing and recording large area retinal abnormalities with a confocal SLO.

Keywords: 432 imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound) 

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