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Table 3 Statistical analysis of changes in vascular parameters in superficial vascular plexus

From: Macular perfusion analysed by optical coherence tomography angiography after uncomplicated phacoemulsification: benefits beyond restoring vision

SVP Before 1 week after 1 month after 3 months after P Bias
EA (mm2) 8.3792 (8.3777–8.3806) 8.3794 (8.3780–8.3806) 8.3801 (8.3793–8.3807) 8.3801 (8.3790–8.3809) 0.066 0.01%
VA (mm2) 4.4132 (3.8255–4.9965) 4.9826 (4.6831–5.2155) 5.0491 (4.7088–5.3848) 5.0094 (4.7490–5.4082) < 0.001 15.00%
VPA (%) 52.6630 (45.6480–59.7126) 59.4532 (55.8881–62.2341) 60.2560 (56.1915–64.2580) 59.7772 (56.6644–64.6154) < 0.001 14.93%
TNJ 1242 (1086–1377) 1398 (1337–1467) 1421 (1345–1495) 1433 (1364–1507) < 0.001 16.58%
JD (junctions/mm2) 148.2088 (129.6466–164.2696) 166.8051 (159.6096–175.0851) 169.5579 (160.4704–178.4466) 170.9742 (162.8021–179.8361) < 0.001 16.50%
TVL (mm) 135.6119 (126.7246–143.7911) 145.2219 (140.3096–149.2926) 147.1460 (142.4993–150.2033) 146.6076 (141.8954–151.0425) < 0.001* 9.56%*
AVL (mm) 3.3768 (1.5705–5.5304) 6.7711 (4.8339–9.0807) 7.7264 (4.1957–10.0277) 7.5436 (4.5400–10.4743) < 0.001 116.90%
TNEP 327 (190–447) 194 (162–235) 188 (145–243) 182 (136–220) < 0.001** −38.54%†
ML 0.04859 (0.03868–0.06534) 0.03816 (0.03027–0.04640) 0.03720 (0.02838–0.04485) 0.03701 (0.02614–0.04696) < 0.001 −35.99%
  1. SVP superficial vascular plexus, EA explant area, VA vessels area, VPA vessels percentage area, TNJ total number of junctions, JD junctions density, TVL total vessels length, AVL average vessels length, TNEP total number of end points, ML mean lacunarity. This table shows median and interquartile ranges for each parameter (25th and 75th percentile). P values and percentages of change are presented one week after phacoemulsification.
  2. Friedman ANOVA test, significant difference (bold values) was found for values with P < 0.05
  3. *Observed value was lower one week compared to three months after surgery
  4. **Observed value was higher one week compared to three months after surgery
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