Table 2.

Thickness of mean RNFL and mean RNFL thinning compared with baseline $\left(\overline{\mu }\mathrm{m}\right)$.

	Time	Mild (3.62 ± 1.41 dB)	Moderate (8.59 ± 1.79 dB)	Severe (18.16 ± 3.57 dB)
A	Baseline	84.5871	68.0094	48.4642
	At 3 months	84.2700	67.7853	48.4218
	At 6 months	84.1038	67.6359	48.4311
	At 9 months	83.8976	67.4412	48.4247
	At 12 months	83.6119	66.9924	48.3190
	At 15 months	83.2138	66.7906	48.3121
	At 18 months	82.9848	66.5888	48.1595
	R Avalue 2	0.988	0.982	0.814
	F A(P)	418.279 (p < 0.05)	276.064 (p < 0.05)	21.884 (p < 0.05)
B	At 3 months	0.3171	0.2241	0.0424
	At 6 months	0.4833	0.3735	0.0331
	At 9 months	0.6895	0.5682	0.0395
	At 12 months	0.9752	1.0170	0.1452
	At 15 months	1.3733	1.2188	0.1521
	At 18 months	1.6023	1.4206	0.3047
	R Bvalue 2	0.982	0.978	0.805
	F B(P)	219.026 (p < 0.05)	175.948 (p < 0.05)	16.558 (p < 0.05)

A: mean RNFL thickness for each group; R_Avalue²: use simple linear regression analysis to get the coefficient determination of each group; F_A: use analysis of variance to prove the linear relationship between RNFL thickness and time. B: mean RNFL thinning thickness compared with baseline for each group; R_Bvalue²: use simple linear regression analysis to get the coefficient determination of each group; F_B: use analysis of variance to prove the linear relationship between RNFL thinning thickness and time.