May 2007
Volume 48, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2007
Comparison of Retinal Blood Flow Between Healthy Blacks and Whites
Author Affiliations & Notes
  • M. E. Hajee
    Ophthalmology, SUNY Downstate Medical Center, Brooklyn, New York
  • T. Brevetti
    Ophthalmology, SUNY Downstate Medical Center, Brooklyn, New York
  • D. Lazzaro
    Ophthalmology, SUNY Downstate Medical Center, Brooklyn, New York
  • B. Siesky
    Ophthalmology, Indiana University, Glaucoma Research and Diagnostic Center, Indianapolis, Indiana
  • P. Chamnongvongse
    Ophthalmology, SUNY Downstate Medical Center, Brooklyn, New York
  • A. Harris
    Ophthalmology, Indiana University, Glaucoma Research and Diagnostic Center, Indianapolis, Indiana
Investigative Ophthalmology & Visual Science May 2007, Vol.48, 2293. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      M. E. Hajee, T. Brevetti, D. Lazzaro, B. Siesky, P. Chamnongvongse, A. Harris; Comparison of Retinal Blood Flow Between Healthy Blacks and Whites. Invest. Ophthalmol. Vis. Sci. 2007;48(13):2293.

      Download citation file:


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

      ×
  • Supplements
Abstract

Purpose:: Previous studies have suggested that blood flow may be different amongst various races. This study examined the differences in the peripappillary retinal blood flow (PBF) of healthy white and healthy black populations.

Methods:: Data for this study was obtained from healthy patients free of any pharmacological agents. We compared twenty-six eyes (13 black and 13 white) of healthy patients. Using images obtained from the Heidelberg Retinal Flowmeter, "pixel-by-pixel" analysis was done in an area adjacent to the optic disc with a minimum of 1600 pixels. Flow values were then divided into percentile flow with the removal of zero-flow values. Comparisons were made between groups by means of T-test.

Results:: Mean age of whites and blacks was 42 and 46.8 years respectively (p=0.53). Multivariate analysis revealed that PBF between the two groups showed no statistical significance between whites and blacks at the following percentile parameters:10th [8.95 vs.4.31, p=0.36], 25th [85.3 vs. 69.7, p=0.34], 50th [204 vs. 204, p=0.98], 75th [346.34 vs. 361, p=0.68] and 90th [538 vs. 559, p=0.72]. The mean intraocular pressure of white and black patients were 15.2 and 13.9 mmHG respectively (P=0.15).

Conclusions:: The data suggests that in the healthy population there is no difference in the PBF between whites and blacks. There was so significant difference in age and intraocular pressure between the two groups.

Keywords: blood supply • imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound) 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×