Table 3.

Comparison of peripapillary retinal nerve fiber layer thickness among the three groups using one-way ANOVA test

	pRNFL			p value
	Healthy (H)	Suspect (S)	Early (E)	H vs S	H vs E	S vs E
Average	98.586 ± 17.52	90.054 ± 12.26	84.833 ± 14.69	0.057	0.002*	0.325
Inferior	126.345 ± 20.38	118.270 ± 19.17	101.967 ± 23.20	0.268	<0.001*	0.006*
Superior	120.931 ± 15.42	112.243 ± 19.59	99.767 ± 19.37	0.142	<0.001*	0.019*
Nasal	70.586 ± 9.72	70.432 ± 8.18	66.533 ± 8.99	0.997	0.194	0.182
Temporal	67.345 ± 14.20	62.243 ± 13.05	65.867 ± 14.24	0.299	0.911	0.535
1	117.655 ± 22.97	109.000 ± 22.81	101.133 ± 26.34	0.318	0.026*	0.381
2	84.828 ± 15.54	78.378 ± 16.63	77.500 ± 13.03	0.209	0.161	0.971
3	60.276 ± 13.44	56.000 ± 11.62	57.700 ± 10.04	0.311	0.678	0.826
4	69.448 ± 1.84	62.486 ± 10.55	65.400 ± 12.85	0.041*	0.364	0.554
5	120.931 ± 29.93	112.351 ± 28.08	105.467 ± 32.63	0.487	0.125	0.622
6	139.172 ± 26.59	129.946 ± 26.84	106.400 ± 35.54	0.427	<0.001*	0.005*
7	118.759 ± 32.94	112.703 ± 26.04	93.767 ± 25.90	0.664	0.003*	0.021*
8	63.207 ± 18.25	66.162 ± 9.92	61.733 ± 13.19	0.668	0.913	0.399
9	56.828 ± 10.78	57.676 ± 13.54	58.167 ± 14.77	0.964	0.920	0.987
10	80.379 ± 19.07	81.405 ± 20.81	77.400 ± 17.01	0.975	0.822	0.673
11	121.966 ± 24.05	116.784 ± 29.51	102.333 ± 27.46	0.725	0.019*	0.085
12	119.793 ± 29.63	112.405 ± 22.77	92.600 ± 27.37	0.500	<0.001*	0.008*

^*Significant difference between group (p < 0.05)

Data are expressed as means in micrometers ± SDs

E, early glaucomatous eyes; H, healthy eyes; S, suspect eyes