Table 5.

Differences in corneal biomechanical parameters between NTG and HTG groups under PGA treatment over time after adjusting for age, gender, axial length, corneal curvature, IOP and CCT

	NTG (n = 68)	HTG (n = 43)	P value
DA	1.1070 ± 0.1115	1.0425 ± 0.1248	0.681
AT1	7.2950 ± 0.2707	7.5889 ± 0.2873	0.00011
AV1	0.1478 ± 0.0187	0.1314 ± 0.0191	0.00002
AT2	21.8646 ± 0.6164	21.6138 ± 0.5827	0.173
AV2	-0.2682 ± 0.0580	-0.2551 ± 0.0426	0.709
HC-time	16.8531 ± 0.5389	16.8520 ± 0.8962	0.477
HC-PD	5.0539 ± 0.2704	4.8712 ± 0.3023	0.241
HC-radius	6.5643 ± 0.9992	6.8861 ± 2.5276	0.428

NTG normal tension glaucoma, HTG high tension glaucoma, PGA prostaglandin analogue, IOP intraocular pressure, CCT central corneal thickness, DA deformation amplitude, AT1 the first applanation time, AV1 the first applanation velocity, AT2 the second applanation time, AV2 the second applanation velocity, HC the highest concavity, PD peak distance