Clinical Study
A Method for Visualization of Fine Retinal Vascular Pulsation Using Nonmydriatic Fundus Camera Synchronized with Electrocardiogram
Table 3
Average pulsation of retinal vasculature with visualization at different cardiac cycle points for 12 subjects.
| | | Cardiac cycle point | Mean (SD) (m) | value† | Variations* (m) | Max–Min† (m) |
| | Individual arterioles caliber | 1 | 99.0 (9.5) | | Ref. | | | 2 | 101.5 (10.0) | | 2.5 | | | 3 | 98.2 (9.6) | | 0.8 | | | 4 | 98.6 (9.7) | 0.001 | 0.4 | 3.3 | | 5 | 98.2 (9.8) | 0.8 | | 6 | 99.3 (11.1) | | 0.3 | | | 7 | 100.4 (9.7) | | 1.4 | | | 8 | 100.6 (8.4) | | 1.6 | |
| | Individual venules caliber | 1 | 109.4 (14.5) | | Ref. | | | 2 | 108.6 (15.0) | | 0.8 | | | 3 | 113.3 (16.1) | | 3.9 | | | 4 | 114.3 (14.5) | <0.001 | 4.9 | 6.6 | | 5 | 113.6 (17.3) | 4.2 | | 6 | 115.2 (15.7) | | 5.8 | | | 7 | 110.9 (16.1) | | 1.5 | | | 8 | 112.7 (17.2) | | 3.3 | |
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*Absolute value compared to cycle point 1; †overall value for variations.
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