Table 3 Correlation analysis of iris vessel density in healthy participants.

Parameters		Whole IVD	NS IVD	NI IVD	TS IVD	TI IVD
Age	r	−0.002	0.235	−0.185	0.101	−0.288
Age	P Value	0.991	0.149	0.258	0.542	0.076
Sex	r	0.487	0.274	0.402	0.375	0.465
Sex	P Value	0.002*	0.092	0.011*	0.019*	0.003*
BMI	r	−0.112	−0.258	−0.235	−0.072	−0.395
BMI	P Value	0.497	0.113	0.150	0.661	0.013*
SBP	r	0.004	0.006	0.012	0.122	−0.279
SBP	P Value	0.981	0.973	0.940	0.458	0.085
DBP	r	−0.280	−0.116	−0.350	−0.212	−0.309
DBP	P Value	0.084	0.483	0.059	0.196	0.056
IOP	r	0.049	−0.051	0.081	0.128	0.024
IOP	P Value	0.767	0.759	0.626	0.437	0.885
FBG	r	−0.046	0.013	−0.014	−0.047	−0.366
FBG	P Value	0.782	0.936	0.932	0.777	0.019*
PD	r	−0.151	−0.163	−0.155	−0.104	−0.251
PD	P Value	0.359	0.320	0.347	0.529	0.123

*P < 0.05. BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; IOP, intraocular pressure; FBG, fasting blood glucose; PD, pupil diameter; IVD, iris vessel density; NS, nasal superior sector; NI, nasal inferior sector; TS, temporal superior sector; TI, temporal inferior sector.

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