Table 5

Comparison of repeatability of intraocular pressure measurements between a time-standardised approach (3 readings all at 8:00) and a non-standardised approach (reading 1 at 8:00, reading 2 at 11:00, reading 3 at 16:00 on successive weeks)

First eyeSecond eye
CV (%)p Value*CR (mm Hg)p Value*CV (%)p Value*CR (mm Hg)p Value*
Pre-treatment
 Non-standardised12.70.088.30.5413.40.0067.90.01
 Standardised10.06.89.15.6
Post-treatment
 Non-standardised12.20.265.20.1212.20.375.30.56
 Standardised10.54.610.84.9
  • * p Values calculated using analysis of variance.

  • Visits 1–3.

  • Visits 4–6 for first treated eyes; visits 5–7 for second treated eyes.

  • CR, coefficient of repeatability; CV, coefficient of variation; .