Table 2.
Baseline characteristics for all eyes and by study groups
| Characteristic | Statistic | All eyes N = 52,162 | AcrySof N = 13,329 | Non-AcrySof hydrophilic N = 19,808 | Non-AcrySof hydrophobic N = 19,025 |
|---|---|---|---|---|---|
| N of eyes operated | |||||
| Single eye operated | N (%) | 26,484 (50.8) | 7466 (56.0) | 11,080 (55.9) | 7940 (41.7) |
| Eyes with fellow eye operated | N (%) | 25,678 (49.2) | 5863 (44.0) | 8728 (44.1) | 11,085 (58.3) |
| Age at index date for first eyes operated | N | 39,324 (75.4) | 10,606 (79.6) | 15,391 (77.7) | 13,327 (70.0) |
| Mean (SD) | 78.7 (7.0) | 78.7 (7.1) | 78.9 (7.1) | 78.5 (7.0) | |
| Age at index date for second eyes operated | N | 12,838 (24.6) | 2723 (20.4) | 4417 (22.3) | 5698 (30.0) |
| Mean (SD) | 78.9 (6.7) | 78.8 (6.8) | 79.0 (6.8) | 78.8 (6.7) | |
| Gender | N (%) males | 20,852 (40.0) | 5292 (39.7) | 7989 (40.3) | 7571 (39.8) |
| Co-pathologies | |||||
| Record of any co-pathology (yes) | N (%) | 20,343 (39.0) | 4743 (35.6) | 7792 (39.3) | 7808 (41.0) |
| Disease not specified | N (%) | 1932 (3.7) | 420 (3.2) | 844 (4.3) | 668 (3.5) |
| Glaucoma | N (% of recorded) | 5195 (25.5) | 1031 (26.7) | 2238 (28.7) | 1926 (24.7) |
| Age-related macular degeneration | N (% of recorded) | 5101 (25.1) | 1213 (25.6) | 1693 (21.7) | 2195 (28.1) |
| Diabetic retinopathy | N (% of recorded) | 2688 (13.2) | 783 (16.5) | 995 (12.8) | 910 (11.7) |
| Brunescent/white cataract | N (% of recorded) | 1993 (9.8) | 438 (9.2) | 988 (12.7) | 567 (7.3) |
| Corneal pathology | N (% of recorded) | 1787 (8.8) | 380 (8.0) | 547 (7) | 860 (11) |
| Most recent BDVA prior to surgery (logMAR) | Missing | 2203 (4.2) | 638 (5.0) | 613 (3.1) | 952 (5.0) |
| Median (IQR) | 0.3 (0.2–0.5) | 0.3 (0.2–0.5) | 0.3 (0.2–0.5) | 0.3 (0.2–0.5) | |
| Use of vision blue (yes) | N (%) | 1830 (3.5) | 401 (3.0) | 764 (3.9) | 665 (3.5) |
| Pupil size | |||||
| Small | N (%) | 1794 (3.4) | 489 (3.7) | 696 (3.5) | 609 (3.2) |
| Medium | N (%) | 7482 (14.3) | 2812 (21.1) | 2327 (11.7) | 2343 (12.3) |
| Large | N (%) | 42,886 (82.2) | 10,028 (75.2) | 16,785 (84.7) | 16,073 (84.5) |
| Incision meridian | |||||
| Superior | N (%) | 21,371 (41.0) | 6196 (46.5) | 10,544 (53.2) | 4631 (24.3) |
| Temporal | N (%) | 8663 (16.6) | 2384 (17.9) | 1532 (7.7) | 4747 (25) |
| On-axis | N (%) | 22,128 (42.4) | 4749 (35.6) | 7732 (39) | 9647 (50.7) |
| Incision site | |||||
| Scleral | N (%) | 1713 (3.3) | 1240 (9.3) | 0 (0) | 473 (2.5) |
| Limbal | N (%) | 1447 (2.8) | 458 (3.4) | 297 (1.5) | 692 (3.6) |
| Clear corneal | N (%) | 49,002 (93.9) | 11,631 (87.3) | 19,511 (98.5) | 17,860 (93.9) |
| IOL power | Mean (SD) | 21.6 (3.8) | 21.5 (3.8) | 21.2 (3.6) | 22.2 (3.8) |
| Surgeon seniority | |||||
| Missing | N (%) | 99 (0.2) | 37 (0.3) | 5 (0) | 57 (0.3) |
| Junior trainee | N (%) | 2715 (5.2) | 990 (7.4) | 363 (1.8) | 1362 (7.2) |
| Senior trainee | N (%) | 16,061 (30.8) | 3273 (24.6) | 5798 (29.3) | 6990 (36.7) |
| Consultant | N (%) | 33,287 (3.9) | 9029 (67.9) | 13,642 (68.9) | 10,616 (55.8) |