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Table 3 Alterations in Intraocular Pressure and Ocular Perfusion Pressure During Changing Body Positions

From: Postural effects on intraocular pressure and ocular perfusion pressure in patients with non-arteritic anterior ischemic optic neuropathy

  Alterations in IOP (mmHg)   Alterations in OPP (mmHg)  
Affected eye Unaffected eye P value* Affected eye Unaffected eye P value*
T1 to T2 1.3 ± 2.7 1.8 ± 2.2 0.422 15.6 ± 5.8 15.1 ± 4.6 0.411
T2 to T3 2.4 ± 3.4 1.9 ± 3.1 0.376 −5.9 ± 8.9 −5.9 ± 8.1 0.717
T3 to T4 −2.0 ± 3.5 −1.5 ± 3.4 0.601 5.0 ± 11.0 5.5 ± 9.8 0.823
T4 to T5 2.1 ± 4.6 1.2 ± 3.4 0.936 −11.6 ± 8.2 −11.2 ± 7.7 0.936
T5 to T6 −2.3 ± 3.7 −1.8 ± 2.4 0.896 10.7 ± 9.5 10.2 ± 10.9 0.794
Supine to DLDPa 2.9 ± 4.4 0.7 ± 3.1 0.003 −6.7 ± 9.4 −4.9 ± 8.0 0.022
DLDP to supineb −3.7 ± 3.2 −1.0 ± 3.3 <0.001 7.8 ± 9.4 6.2 ± 9.6 0.005
  1. IOP intraocular pressure, OPP ocular perfusion pressure; T1, sitting position; T2, 10 min after supine position; T3, 10 min after right lateral decubitus position; T4, 10 min after supine position; T5, 10 min after left lateral decubitus position; T6, 10 min after supine position
  2. Data are described as the mean ± standard deviation
  3. The DLDP was defined as the position when the eye of interest (affected or unaffected) was placed on the dependent (lower) side in lateral decubitus position
  4. * Wilcoxon signed-rank test, a T2 to T3 for right eye and T4 toT5 for left eye, b T3 to T4 for right eye and T5 to T6 for left eye