Table 3

Baseline retrobulbar blood flow findings associated with structural and functional glaucoma progression after 4 years

 Structural progressionFunctional progression
ProgressedNot progressedProgressedNot progressed
NMean (SE)NMean (SE)p ValueNMean (SE)NMean (SE)p Value
OA PSV7524.25 (0.80)3729.11 (2.18)0.024*3523.42 (1.34)7726.96 (1.18)0.031*
OA EDV755.81 (0.20)377.19 (0.51)0.012*355.41 (0.27)776.65 (0.29)0.005*
OA RI750.755 (0.007)370.744 (0.011)0.528350.756 (0.010)770.749 (0.01)0.520
CRA PSV758.41 (0.23)378.85 (0.32)0.275358.49 (0.40)778.59 (0.20)0.824
CRA EDV752.46 (0.07)372.54 (0.15)0.862352.53 (0.14)772.46 (0.08)0.937
CRA RI750.703 (0.007)370.712 (0.012)0.464350.696 (0.014)770.710 (0.01)0.341
NPCA PSV747.63 (0.22)377.90 (0.29)0.479357.43 (0.29)767.85 (0.22)0.280
NPCA EDV742.51 (0.09)372.61 (0.11)0.385352.53 (0.12)762.55 (0.09)0.849
NPCA RI740.666 (0.008)370.668 (0.008)0.887350.658 (0.012)760.671 (0.01)0.291
TPCA PSV757.81 (0.20)378.40 (0.30)0.095358.14 (0.34)777.94 (0.19)0.588
TPCA EDV752.51 (0.08)372.72 (0.13)0.148352.58 (0.14)772.58 (0.08)0.873
TPCA RI750.677 (0.007)370.675 (0.012)0.998350.682 (0.010)770.673 (0.01)0.549
  • Baseline NPCA measurements were unable to be obtained in one patient due to poor image quality.

  • *Denotes a statistically significant difference from baseline to 4-year follow-up between patients who progressed functionally or structurally and those who did not progress (p<0.05).

  • CRA, central retinal artery; EDV, end diastolic velocity; NPCA, nasal posterior ciliary artery; OA, ophthalmic artery; PSV, peak systolic velocity; RI, resistive index; TPCA, temporal posterior ciliary artery.