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

Table 2 Statistical analysis of changes in vascular parameters in nerve fiber layer vascular plexus

NFLVP	Before	1 week after	1 month after	3 months after	P	Bias
EA (mm²)	8.3791 (8.3755–8.3804)	8.3796 (8.3770–8.3805)	8.3794 (8.3768–8.3807)	8.3794 (8.3759–8.3803)	0.740	0.05%
VA (mm²)	1.7746 (1.3408–2.4250)	2.3389 (1.7994–2.7072)	2.4731 (2.0283–3.0603)	2.4584 (1.9830–2.9862)	< 0.001^*	31.72%^*
VPA (%)	21.1911 (16.0203–28.9405)	27.9786 (21.4717–32.3195)	29.5066 (24.2454–36.5190)	29.3376 (23.6625–35.6347)	< 0.001^*	31.67%^*
TNJ	456 (300–725)	692 (457–871)	781 (583–1000)	729 (558–996)	< 0.001^*	44.48%^*
JD (junctions/mm²)	54.5141 (35.8141–86.5340)	82.5760 (54.5604–103.8807)	93.3164 (69.6196–119.4013)	86.9921 (66.5249–118.8970)	< 0.001^*	44.43%^*
TVL (mm)	66.7446 (51.4339–93.6245)	87.9231 (70.0598–102.8570)	94.7294 (76.9631–114.5119)	92.3583 (78.0480–112.1177)	< 0.001^*	29.22%^*
AVL (mm)	0.1761 (0.1287–0.2544)	0.2275 (0.1656–0.3089)	0.2604 (0.1823–0.3953)	0.2691 (0.1864–0.3845)	< 0.001^*	24.72%^*
TNEP	954 (864–1031)	984 (874–1061)	966 (855–1059)	959 (850–1124)	0.426	4.39%
ML	0.2865 (0.2111–0.4280)	0.2288 (0.1935–0.3086)	0.2311 (0.1543–0.2945)	0.2151 (0.1603–0.2506)	< 0.001	−31.15%

NFLVP nerve fiber layer 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
Friedman ANOVA test, significant difference (bold values) was found for values with P < 0.05
*Observed values were lower one week compared to one and three months after surgery, within which there was no significant difference

ISSN: 1471-2415