Table 1. Demographics.
Glaucoma index (GI); GI1 Mild: GI≤4; GI2 Moderate: 4<GI≤8; GI3 Advanced: 8<GI≤16; GI4 Severe: GI>16.
| GI Group 1
n=368 |
GI Group 2
n=322 |
GI Group 3
n=370 |
GI Group 4
n=280 |
p-value | |
|---|---|---|---|---|---|
| Age | 0.02 | ||||
| Mean±SD | 71±11 | 68±13 | 69±15 | 66±18 | |
| Range | 18 – 92 | 18 – 90 | 18 – 96 | 18 – 96 | |
| Gender | <0.01 | ||||
| Female | 225 (61%) | 181 (56%) | 183 (49%) | 135 (48%) | |
| Male | 139 (38%) | 139 (43%) | 184 (50%) | 136 (49%) | |
| NR | 4 (1%) | 2 (1%) | 3 (1%) | 9 (3%) | |
| Race | <0.01 | ||||
| African American | 29 (8%) | 16 (5%) | 17 (5%) | 14 (5%) | |
| Asian | 98 (27%) | 86 (27%) | 115 (31%) | 107 (38%) | |
| Caucasian | 203 (55%) | 177 (55%) | 202 (55%) | 124 (44%) | |
| Hispanic | 23 (6%) | 16 (5%) | 17 (5%) | 21 (8%) | |
| Other | 15 (4%) | 27 (8%) | 19 (5%) | 14 (5%) | |
| Glaucoma Diagnosis | <0.01 | ||||
| Primary open angle | 288 (78%) | 241 (75%) | 257 (69%) | 179 (64%) | |
| Pseudoexfoliation | 28 (8%) | 37 (11%) | 59 (16%) | 41 (15%) | |
| Pigment Dispersion | 18 (5%) | 10 (3%) | 11 (3%) | 6 (2%) | |
| Steroid | 10 (3%) | 18 (6%) | 28 (8%) | 39 (14%) | |
| Open angle type not specified | 24 (7%) | 16 (5%) | 15 (4%) | 15 (5%) | |
| Visual Acuity (logMAR) | <0.01 | ||||
| Mean±SD | 0.31±0.34 | 0.28±0.35 | 0.37±0.52 | 0.47±0.61 | |
| Range | -0.19 – 2.12 | -0.19 – 2.00 | -0.19 – 3.00 | -0.19 – 3.00 | |
| Cup/Disc Ratio | <0.01 | ||||
| Mean±SD | 0.69±0.18 | 0.74±0.15 | 0.75±0.17 | 0.83±0.12 | |
| Range3 | 0.1 – 1.9 | 0.3 – 1.00 | 0.1 – 1.00 | 0.25 – 1.00 | |
| Lens Status | <0.01 | ||||
| Phakic | 296 (80%) | 231 (72%) | 240 (65%) | 159 (57%) | |
| Pseudophakic | 56 (15%) | 78 (24%) | 116 (31%) | 104 (37%) | |
| Aphakic | 1 (0%) | 1 (0%) | 0 (0%) | 3 (1%) | |
| Not recorded | 15 (4%) | 12 (4%) | 14 (4%) | 14 (5%) | |
| Shaffer Grade | 0.47 | ||||
| I | 5 (1%) | 6 (2%) | 4 (1%) | 2 (1%) | |
| II | 23 (6%) | 25 (8%) | 20 (5%) | 27 (10%) | |
| III | 107 (29%) | 99 (31%) | 121 (33%) | 85 (30%) | |
| IV | 192 (52%) | 146 (45%) | 172 (46%) | 134 (48%) | |
| NR | 41 (11%) | 46 (14%) | 53 (14%) | 32 (11%) | |
| Combined Surgeries | <0.01 | ||||
| Trabectome+Phaco | 164 (45%) | 202 (63%) | 260 (70%) | 216 (77%) | |
| Trabectome Alone | 204 (55%) | 120 (37%) | 110 (30%) | 64 (23%) |