Table 2.

Comparison of ocular biometry in subjects with PACG, stratified according to glaucoma severity

Factors	Mild PACG (n = 630)	Moderate PACG (n = 598)	Severe PACG (n = 1026)	F value	P value
IOP (mmHg)	16.4 ± 7.2	17.4 ± 9.0	24.5 ± 13.1	128.625	< 0.001a,c
Male	16.5 ± 6.9	17.3 ± 9.3	23.8 ± 13.3	39.319	< 0.001a,c
Female	16.4 ± 7.4	17.4 ± 11.7	24.9 ± 13.5	89.542	< 0.001a,c
VCDR	0.44 ± 0.16	0.49 ± 0.18	0.72 ± 0.22	14.701	< 0.001a,b,c
Male	0.44 ± 0.15	0.50 ± 0.18	0.76 ± 0.22	186.020	< 0.001a,b,c
Female	0.44 ± 0.16	0.48 ± 0.18	0.69 ± 0.22	203.208	< 0.001a,b,c
CCT (mm)	539.0 ± 41.3	545.2 ± 48.2	543.9 ± 48.0	2.439	0.088
Male	540.6 ± 37.4	555.8 ± 62.9	546.5 ± 45.5	3.328	0.037b
Female	538.28 ± 43.2	541.8 ± 41.9	542.4 ± 49.4	0.888	0.412
ACD (mm)	1.86 ± 0.30	1.84 ± 0.44	1.85 ± 0.48	0.214	0.807
Male	1.89 ± 0.34	1.91 ± 0.49	1.92 ± 0.53	0.257	0.773
Female	1.84 ± 0.28	1.81 ± 0.42	1.80 ± 0.44	1.142	0.320
AL (mm)	22.25 ± 0.95	22.25 ± 1.00	22.51 ± 1.34	15.747	< 0.001a,c
Male	22.62 ± 1.11	22.59 ± 1.08	22.74 ± 1.22	1.040	0.354
Female	22.06 ± 0.79	22.13 ± 0.95	22.37 ± 1.39	9.141	< 0.001a,c

Data are expressed as mean ± standard deviation (SD). One-way ANOVA was used. The mean IOP, VCDR, and MD were the lowest in the mild PACG group, followed by the moderate and then the severe one. However, the AL was found significantly different in the female subgroup but not male subgroup regarding the three severity groups

IOP intraocular pressure, VCDR vertical cup-disc ratio, CCT central corneal thickness, AL axial length, ACD anterior chamber depth, MD mean deviation values for the visual field, MS mean sensitivity values for the visual field, PACG primary angle closure glaucoma, n the number of eyes

^aP < 0.05 for the difference between mild PACG and severe PACG (one-way ANOVA with the LSD post hoc test)

^bP < 0.05 for the difference between mild PACG and moderate PACG (one-way ANOVA with the LSD post hoc test)

^cP < 0.05 for the difference between moderate PACG and severe PACG (one-way ANOVA with the LSD post hoc test)