Table 2.

Peripapillary and parafoveal perfusion of the four groups

	Emmetropia	Mild myopia	Moderate myopia	High myopia
Variables	(N=20)	(N=20)	(N=20)	(N=18)	p Value*
Peripapillary perfusion
Retinal flow index	0.097±0.012	0.093±0.009	0.085±0.009	0.083±0.008	<0.001
Retinal vessel density (%)	89.0±5.4	87.9±4.3	84.5±5.9	82.3±5.8	0.002
Choroid flow index	0.091±0.015	0.088±0.014	0.085±0.009	0.082±0.013	0.103
Choroid vessel density (%)	82.7±6.9	82.1±7.2	81.1±5.3	77.6±7.6	0.114
Parafoveal perfusion
Superficial flow index	0.022±0.006	0.025±0.006	0.025±0.007	0.024±0.007	0.760
Superficial vessel density (%)	26.6±6.1	28.9±6.3	29.0±7.2	28.2±3.7	0.848
Choroid flow index	0.085±0.019	0.083±0.011	0.088±0.009	0.083±0.010	0.440
Choroid vessel density (%)	88.4±10.9	89.0±5.8	91.3±4.4	88.0±5.8	0.316

Numbers displayed are mean±SD.

*Differences between groups were tested with the Kruskal-Wallis test.