Subjects with PACS and PAC were approximately 10 years older than normal people (
P < 0.001), whereas subjects with PACG were approximately 5 years older than those with PACS or PAC (
P < 0.001). IOP was similar in patients with PACS and that in normal persons, significantly lower than that in subjects with PAC and PACG (
P < 0.001). The spherical equivalent (SE) in normal persons was similar to that in subjects with PACG (
P = 0.812), but was more myopic than that in subjects with PACS and PAC (
P < 0.001). Axial length and anterior chamber depth in all angle-closure diseases were smaller than measurements in normal people (
P < 0.05); lens thickness was greater than that in normal people (
P < 0.05), but there were no significant differences among subjects with PACS, PAC, or PACG (
P > 0.05). CCT in persons with PACG was not different from that in subjects with PACS (
P = 0.444) and normal persons (
P = 0.101), but lower than that in persons with PAC (
P = 0.012). The MD of visual field defects was −3.2 ± 3.7 in the normal group (
n = 759), and −3.6 ± 4.2 for PACS (
n = 254), −4.5 ± 4.2 for PAC (
n = 62), and −8.2 ± 8.1 for PACG (
n = 22). Visual field defects were significantly higher in the PACG group than those in the other three groups (
P < 0.005); MD in PACS did not differ with that of the normal group (
P = 0.08) and the PAC group as well (
P = 1.66) (
Table 1).