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Br J Ophthalmol 87:184-188 doi:10.1136/bjo.87.2.184
  • Original Article
    • Clinical science

Blood flow per unit retinal nerve fibre tissue volume is lower in the human inferior retina

Table 3

The perfusion/nerve fibre ratio (PNR) of the superior and inferior retinal sectors

Ratio Superior Inferior p Value
*p<0.05.
HRF mean flow/RNFLT 792.5 310.9 721.7 196.9 0.2543
HRF mean flow/RNFL CRA 483.3 201.0 438.8 125.7 0.2341
HRF mean flow/rim area 401.7 121.2 375.1 105.9 0.26
HRF mean flow/rim volume 1946.4 1176.9 1532.8 708.4 0.047*
HRF 50th percentile flow/RNFLT 628.4 249.6 581.4 165.8 0.3779
HRF 50th percentile flow/RNFL CRA 383.1 163.9 352.2 101.5 0.4012
HRF 50th percentile flow/rim area 317.7 95.1 301.97 87.7 0.4727
HRF 50th percentile flow/rim volume 1540.1 936.6 1232.5 582.0 0.0625
HRF 75th percentile flow/RNFLT 1185.1 448.3 1072.2 297.0 0.179
HRF 75th percentile flow/RNFL CRA 722.0 286.3 650.9 180.6 0.218
HRF 75th percentile flow/rim area 601.4 174.2 556.7 155.2 0.1635
HRF 75th percentile flow/rim volume 2916.4 1753.9 2279.4 1060.7 0.0282*

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