Table IV.

Characteristics of retinal nerve fibre layer thickness (mm) in HRT II

AHI	n	Mean	Median	Min.	Max.	Std. dev.
≥ 5	34	0.27	0.28	0.16	0.38	0.06
< 5	18	0.24	0.21	0.14	0.37	0.07
All	52	0.26	0.26	0.14	0.38	0.06

Mann-Whitney U-test (p < 0.05), RNFL thickness U = 220.00, Z = 1.646, p = 0.099