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Table 7 Statistical analysis of changes in vascular parameters in deep capillary plexus

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

DCP Before 1 week after 1 month after 3 months after P Bias
EA (mm2) 8.3792 (8.3766–8.3803) 8.3802 (8.3790–8.3808) 8.3802 (8.3789–8.3807) 8.3801 (8.3790–8.3810) 0.357 0.01%
VA (mm2) 4.2319 (3.4769–4.8241) 4.9539 (4.4996–5.2425) 4.9380 (4.5294–5.3485) 4.9121 (4.5870–5.4160) < 0.001* 17.65%*
VPA (%) 50.5055 (41.6312–57.5592) 59.1286 (53.7127–62.5724) 58.9327 (54.1117–63.8239) 58.6169 (54.7285–64.6397) < 0.001* 17.59%*
TNJ 1375 (1078–1546) 1573 (1442–1646) 1572 (1446–1650) 1572 (1440–1654) < 0.001 16.77%
JD (junctions/mm2) 164.1052 (128.8104–184.4084) 187.7513 (172.1331–196.4872) 187.7643 (172.532–196.884) 187.5586 (171.8801–197.3193) < 0.001 16.71%
TVL (mm) 138.1963 (120.0253–150.4007) 151.3618 (144.6869–156.4053) 152.0403 (145.4315–156.7864) 151.0493 (145.3439–156.7136) < 0.001 11.00%
AVL (mm) 1.9423 (0.7977–4.6726) 5.8517 (3.7833–8.4856) 5.3625 (3.2110–8.1661) 5.2044 (3.3965–8.1440) < 0.001 103.51%
TNEP 411 (237–597) 239 (180–328) 219 (171–311) 225 (167–298) < 0.001 −37.06%
ML 0.05597 (0.04235–0.08264) 0.04124 (0.0304–0.05118) 0.03980 (0.03073–0.04955) 0.03709 (0.03059–0.05586) < 0.001 −44.00%
  1. DCP deep capillary 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
  2. 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
  3. Friedman ANOVA test, significant difference (bold values) was found for values with P < 0.05
  4. *Observed values were lower one week than three months after surgery
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