Clinical Study
A Method for Visualization of Fine Retinal Vascular Pulsation Using Nonmydriatic Fundus Camera Synchronized with Electrocardiogram
Table 2
Average pulsation of retinal vasculature without visualization at different cardiac cycle points for 12 subjects.
| | Cardiac cycle point | Mean (SD) (μm) | value† | Variations* (μm) | Max–Min (μm) |
| Individual arterioles caliber | 1 | 90.6 (10.0) | | Ref. | | 2 | 91.2 (9.8) | | 0.6 | | 3 | 90.4 (10.3) | | 0.2 | | 4 | 91.3 (9.4) | 0.699 | 0.7 | 1.2 | 5 | 90.8 (9.1) | 0.2 | 6 | 90.5 (8.7) | | 0.1 | | 7 | 90.1 (9.7) | | 0.5 | | 8 | 90.8 (9.9) | | 0.2 | |
| Individual venules caliber | 1 | 111.9 (12.6) | | Ref. | | 2 | 111.4 (11.7) | | 0.5 | | 3 | 111.6 (13.1) | | 0.3 | | 4 | 113.0 (13.2) | 0.211 | 1.1 | 1.9 | 5 | 112.1 (12.9) | 0.2 | 6 | 113.3 (12.5) | | 1.4 | | 7 | 112.0 (14.3) | | 0.1 | | 8 | 112.3 (13.6) | | 0.4 | |
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*Absolute value compared to cycle point 1; †overall value for variations.
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