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. 2019 Jun;60(7):2572–2582. doi: 10.1167/iovs.19-26600

Table.

Sources of Variance in IOP Transient Impulse and the Number of Transient IOP Fluctuations >0.6 mm Hg in Magnitude, Separated Into Waking (6AM–6PM) and Sleeping Hour Periods (6PM–6AM).

Source of Variability
% of Total Variability
Waking Hours
Sleeping Hours
IOP transient impulse
 NHP 13 18
 Eye within NHP 6 0.7
 Day within eye within NHP 50 48
 Hour within eye within NHP 32 34
Number of transient IOP fluctuations
 NHP 44 45
 Eye within NHP 2 0.4
 Day within eye within NHP 15 22
 Hour within eye within NHP 39 32