May 2007
Volume 48, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2007
Macular Blood Flow Velocity Measured by Blue-field Entoptoscopy and Heidelberg Retinal Flowmetry: Comparision of Two Different Techniques in a Group of Type I Diabetic Women During Pregnancy
Author Affiliations & Notes
  • S. Loukovaara
    Ophthalmology, Helsinki Univ Central Hospital, Helsinki, Finland
  • M. Harju
    Ophthalmology, Helsinki Univ Central Hospital, Helsinki, Finland
  • I. Immonen
    Ophthalmology, Helsinki Univ Central Hospital, Helsinki, Finland
  • Footnotes
    Commercial Relationships S. Loukovaara, None; M. Harju, None; I. Immonen, None.
  • Footnotes
    Support The Finnish Eye Foundation, The Friends of the Blind, Helsinki, Finland
Investigative Ophthalmology & Visual Science May 2007, Vol.48, 127. doi:https://doi.org/
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      S. Loukovaara, M. Harju, I. Immonen; Macular Blood Flow Velocity Measured by Blue-field Entoptoscopy and Heidelberg Retinal Flowmetry: Comparision of Two Different Techniques in a Group of Type I Diabetic Women During Pregnancy. Invest. Ophthalmol. Vis. Sci. 2007;48(13):127. doi: https://doi.org/.

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

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Abstract

Purpose:: To compare macular capillary blood flow velocity measured with psychophysical blue field entoptic simulation (BFS) technique and confocal scanning laser flowmetry in diabetic women during pregnancy

Methods:: Macular capillary blood flow velocity was measured by blue-field entoptic simulation using an Oculix BFS-2000 V2.1 psychophysical system and confocal scanning laser flowmeter, Heidelberg Retinal Flowmetry (HRF, Heidelberg Engineering, GmbH, Heidelberg, Germany) in the right eyes of 34 Type I diabetic women during the third trimester.

Results:: The macular blood flow velocity measured with the BFS technique correlated significantly with both the 50th percentile HRF velocity (r=0.383, p=0.025, n=34, Spearman's nonparametric correlation) and HRF flow (r=0.431, p=0.012, n=33) during the third trimester. However, there was no correlation between the BFS velocity and the 25th, 75th or 90th percentiles of HRF measurements.

Conclusions:: BFS is known to be an experimental technique that provides a quantitative measure of flow in the perifoveal capillary network. On the other hand, HRF image reflects quantitative, multispectral, objective and noinvasive measurements, a 2-D projection of a 3-D retinal capillary bed. In our study, it was shown that the BFS measurements are comparable with the 50th percentile HRF flow and velocity.

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