December 2002
Volume 43, Issue 13
Free
ARVO Annual Meeting Abstract  |   December 2002
Fractal Density of Normal Versus Abnormal Vascular Patterns Seen in Intravenous Fluorescein Angiogram (IFVA) Photographs of Normal and Abnormal Eyes with Branch Retinal Vein Obstruction
Author Affiliations & Notes
  • IP Glavas
    Ophthalmology New York Univ Med Sch New York NY
  • J Young
    Ophthalmology New York Univ Med Sch New York NY
  • Footnotes
    Commercial Relationships   I.P. Glavas, None; J. Young, None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 520. doi:
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      IP Glavas, J Young; Fractal Density of Normal Versus Abnormal Vascular Patterns Seen in Intravenous Fluorescein Angiogram (IFVA) Photographs of Normal and Abnormal Eyes with Branch Retinal Vein Obstruction . Invest. Ophthalmol. Vis. Sci. 2002;43(13):520.

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

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Abstract

Abstract: : Purpose: To analyze and compare the fractal density (FD) of normal versus abnormal vascular patterns seen in intravenous fluorescein angiogram (IFVA) photographs or eyes with branch retinal vein occlusion (BRVO). Methods: Ten eyes of five patients were selected. Pairs of one normal and one abnormal, including the BRVO lesion, IVFA samples were digitized. The resulting images were analyzed using fractal analysis software. Fractal dimension analysis was performed for each one of the samples as a whole. Also, segments of the digitized samples that included the affected retinal area were analyzed. Results: Comparison of sample pairs of normal (FD=1.89) versus abnormal IVFA parts including the BRVO lesion (FD=1.79) showed a statistically significant difference (p=0.042) in the fractal dimension values. Conclusion: The study suggests that there is a real difference between the fractal density of the normal and BRVO abnormal vascular patterns. The difference of fractal dimension between normal and abnormal vascular patterns in the same patient may suggest a new method of recognizing retinal areas of pathologic vasculature.

Keywords: 554 retina • 615 vascular occlusion/vascular occlusive disease • 431 imaging/image analysis: non-clinical 
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