Effects of smoking on the retina of patients with dry age-related macular degeneration by optical coherence tomography angiography

Table 4 Statistical description of macular retina-related indices in the smoking and nonsmoking groups

Variables	Nonsmoking (n = 87)	Smoking (n = 47)	P value
FAZ (mm²), mean ± SD	0.37 ± 0.16	0.34 ± 0.13	0.51
FD (%), mean ± SD	47.97 ± 8.16	48.11 ± 7.18	0.88
SCP
whole (%), mean ± SD	45.33 ± 5.14	45.41 ± 4.41	0.92
foveal (%), mean ± SD	14.94 ± 6.80	16.51 ± 5.81	0.18
parafoveal (%), mean ± SD	47.12 ± 5.81	47.56 ± 5.61	0.67
DCP
whole (%), mean ± SD	45.34 ± 7.19	44.42 ± 5.86	0.46
foveal (%), mean ± SD	29.04 ± 8.13	29.90 ± 8.05	0.56
parafoveal (%), mean ± SD	52.19 ± 6.44	49.84 ± 6.23	0.02
full-layer FRT (mm), mean ± SD	244.72 ± 31.48	238.74 ± 45.36	0.37
inner FRT (mm), mean ± SD	62.69 ± 20.44	62.32 ± 18.02	0.79
outer FRT (mm), mean ± SD	182.82 ± 21.41	179.21 ± 33.58	0.71

Abbreviations: FAZ Foveal avascular zone, FD Foveal density in a 300 μm region around FAZ, SCP Superficial capillary plexuses, DCP Deep capillary plexuses, FRT Fovea retinal thickness

ISSN: 1471-2415