Table 1.
Correlations between ophthalmodynamometric measurements, blood pressure readings, age, and sex
| Study group 1 (control) | Correlation coefficient | p Value |
| Correlation between central retinal artery collapse pressure (relative units) with: | ||
| Diastolic arterial BP | 0.77 | <0.001 |
| Mean arterial BP | 0.76 | <0.001 |
| Systolic arterial BP | 0.35 | 0.029 |
| Age | −0.13 | 0.47 (NS) |
| Sex | 0.91 (NS) | |
| Correlation between central retinal artery collapse (relative units) pressure plus IOP pressure (mm Hg) with: | ||
| Diastolic arterial BP | 0.71 | <0.001 |
| Mean arterial BP | 0.67 | <0.001 |
| Systolic arterial BP | 0.27 | 0.19 (NS) |
| Age | −0.19 | 0.41 (NS) |
| Sex | 0.31 (NS) | |
| Correlation between central retinal vein collapse pressure (relative units) with: | ||
| Diastolic arterial BP | 0.26 | 0.11 (NS) |
| Mean arterial BP | 0.19 | 0.24 (NS) |
| Systolic arterial BP | −0.10 | 0.54 (NS) |
| Age | −0.03 | 0.89 (NS) |
| Sex | 0.42 (NS) | |
| IOP (mm Hg) with: | ||
| Diastolic arterial BP | 0.18 | 0.39 (NS) |
| Mean arterial BP | 0.11 | 0.59 (NS) |
| Systolic arterial BP | −0.10 | 0.61 (NS) |
| Age | −0.19 | 0.41 (NS) |
| Sex | 1.0 (NS) | |
| Study group 2 (retinal or orbital diseases) | ||
| Correlation between central retinal artery collapse pressure (relative units) with: | ||
| Diastolic arterial BP | 0.28 | 0.08 (NS) |
| Mean arterial BP | 0.31 | 0.049 |
| Systolic arterial BP | 0.23 | 0.15 (NS) |
| Age | −0.04 | 0.82 (NS) |
| Sex | 0.24 (NS) | |
| Correlation between central retinal artery collapse pressure (relative units) plus IOP (mm Hg) with: | ||
| Diastolic arterial BP | 0.28 | 0.14 (NS) |
| Mean arterial BP | 0.27 | 0.15 (NS) |
| Systolic arterial BP | 0.15 | 0.43 (NS) |
| Age | 0.04 | 0.46 (NS) |
| Sex | 0.06 (NS) | |
| Collapse pressure (relative units) with: | ||
| Diastolic arterial BP | 0.11 | 0.52 (NS) |
| Mean arterial BP | 0.06 | 0.73 (NS) |
| Systolic arterial BP | −0.07 | 0.69 (NS) |
| Age | −0.18 | 0.31 (NS) |
| Sex | 0.46 (NS) | |
| Correlation between central retinal vein collapse pressure (relative units) plus IOP (mm Hg) with: | ||
| Diastolic arterial BP | 0.01 | 0.96 (NS) |
| Mean arterial BP | −0.03 | 0.86 (NS) |
| Systolic arterial BP | −0.10 | 0.61 (NS) |
| Age | −0.24 | 0.25 (NS) |
| Sex | 0.06 (NS) | |
| Study group 3 (retinal occlusive diseases) | ||
| BP, blood pressure; IOP, intraocular pressure; NS, not significant. | ||
| Correlation between central retinal artery collapse pressure (relative units) with: | ||
| Diastolic arterial BP | −0.10 | 0.78 (NS) |
| Mean arterial BP | −0.17 | 0.61 (NS) |
| Systolic arterial BP | −0.31 | 0.36 (NS) |
| Age | −0.36 | 0.28 (NS) |
| Sex | 0.70 (NS) | |
| Correlation between central retinal vein collapse pressure (relative units) with: | ||
| Diastolic arterial BP | −0.17 | 0.63 (NS) |
| Mean arterial BP | 0.06 | 0.87 (NS) |
| Systolic arterial BP | 0.64 | 0.05 (NS) |
| Age | 0.05 | 0.98 (NS) |
| Sex | 0.10 (NS) | |