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Br J Ophthalmol 85:403-409 doi:10.1136/bjo.85.4.403
  • Original Article
    • Clinical science

The b-wave of the dark adapted flash electroretinogram in patients with advanced asymmetrical glaucoma and normal subjects

Table 5

Independent analyses for high tension glaucomas (HTG) and low tension glaucomas (LTG)

Flash intensity (cd/s/m2) Pearson correlation between interocular differences in mean deviation and interocular differences of:
b-Wave amplitude Implicit time
Correlation coefficient p Value Correlation coefficient p Value
HTG LTG HTG LTG HTG LTG HTG LTG
9.4 –0.600 0.031 0.003 NS 0.556 0.461 0.007 NS
5.3 (–0.25 log) –0.567 0.036 0.006 NS 0.635 0.632 0.001 0.03
3.0 (–0.5 log) –0.646 0.150 0.001 NS 0.796 0.646 0.001 0.04
1.7 (–0.75 log) –0.709 0.114 <0.001 NS 0.618 0.574 0.003 0.04
0.53 (–1.25 log) –0.624 0.040 0.002 NS 0.279 0.419 NS NS
0.17 (–1.75 log) –0.660 –0.200 0.001 NS 0.689 –0.0003 0.001 NS
0.053 (–2.25 log) –0.586 –0.147 0.005 NS 0.317 –0.191 NS NS
0.017 (–2.75 log) –0.570 0.116 0.007 NS 0.398 0.060 NS NS
0.0053 (–3.25 log) –0.525 0.269 0.015 NS 0.501 0.027 0.02 NS
0.00053 (–4.25 log) 0.231 0.049 NS NS 0.472 0.269 NS NS

  • Correlations between the interocular differences in the mean deviation and the interocular differences in the b-wave amplitudes and implicit times showed a higher significance for “high tension glaucomas” (HTG) than for “low tension glaucomas” (LTG) when both subgroups were analysed independently.

  • ↵p⩽ 0.05,

  • ↵p⩽ 0.005,

  • ↵p⩽0.001.

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