Table 1:

Characteristics of Included Eyes and Subjects

	N(%)Eyes	N(%) Subjects
Institution
1	6232 (47.4%)	3934 (46.3%)
2	862 (6.6%)	612 (7.2%)
3	3760 (28.6%)	2395 (28.2%)
4	906 (6.9%)	613 (7.2%)
5	1396 (10.6%)	945 (11.1%)
Eye
Right	6479 (49.2%)
Left	6677 (50.8%)
Mean Deviation (MD)
≥−6	9282 (70.6%)
−6 < MD < −12	2146 (16.3%)
≤ −12	1728 (13.1%)
Follow up (years)
≤ 5	4268 (32.4%)	2972 (35.0%)
5-10	7526 (57.2%)	4741 (55.8%)
>10	1362 (10.4%)	786 (9.2%)
Age (years)
18 – 40	501 (3.8%)	326 (3.8%)
40 - 60	4110 (31.2%)	2567 (30.2%)
60 – 80	7589 (57.7%)	4927 (58.0%)
>80	956 (7.3%)	679 (8.0%)
Number of Fields (μ +/− σ)	6.90 +/− 2.42
Fields per year (μ +/− σ)	1.25 +/− 1.35
Number of Fields
5	4669 (35.5%)
6-10	7351 (55.9%)
>10	1136 (8.6%)
Fields per year
≤1	5122 (38.9%)
1-2	7109 (54.0%)
>2	925 (7.0%)

MD = Mean Deviation