Table 1 Comparison of two groups of general data

Age (years,\(\overline{x} \pm s\))

72.33 ± 5.22

70.55 ± 5.07

1.595

0.113

Gender [n (%)]

Male

15(57.69)

59(55.66)

0.035

0.852

Female

11(42.31)

47(44.34)

Academic degree [n (%)]

Junior high school and below

14(53.85)

54(50.94)

1.018

0.600

Senior high school

6(23.08)

34(32.08)

College or above

6(23.08)

18(16.98)

Place of residence [n (%)]

City

15(57.69)

52(49.06)

0.623

0.430

Village

11(42.31)

54(50.94)

Payment of medical expenses [n (%)]

Medical insurance

23(88.46)

91(85.85)

0.121

0.728

Pay one’s own expenses

3(11.54)

15(14.15)

Smoking history [n (%)]

Yes

3(11.54)

22(20.75)

0.155

0.282

No

23(88.46)

84(79.25)

Drink wine/alcohol [n (%)]

Yes

2(7.69)

16(15.09)

0.971

0.324

No

24(92.31)

90(84.91)

Long-term medication [n (%)]

Yes

9(34.62)

58(54.72)

3.375

0.066

No

17(65.38)

48(45.28)

Course of disease (month,\(\overline{x} \pm s\))

9.02 ± 1.14

8.77 ± 1.08

1.046

0.297

Intraocular pressure(mmHg,\(\overline{x} \pm s\))

15.97 ± 1.91

15.33 ± 1.88

1.550

0.123

Hypertension [n(%)]

Yes

18(69.23)

65(61.32)

0.560

0.454

No

8(30.77)

41(38.68)

Diabetes [n(%)]

Yes

8(30.77)

31(29.25)

0.023

0.879

No

18(69.23)

75(70.75)

Hyperlipoidemia [n(%)]

Yes

7(26.92)

29(27.36)

0.002

0.964

No

19(73.08)

77(72.64)

Coronary heart disease [n (%)]

Yes

9(34.62)

22(20.75)

2.232

0.135

No

17(65.38)

84(79.25)

Self-care situation [n(%)]

Providing for oneself

5(19.23)

12(11.32)

1.164

0.281

Need to take care of

21(80.77)

94(88.68)

Affected eye site [n(%)]

Left eye

16(61.54)

57(53.77)

0.509

0.475

Right eye

10(38.46)

49(46.23)