Table 2: Preoperative risk factors in the groups.
Complicating factor. n (%) |
Study group |
Control group |
p-value |
Corneal scar, n (%) |
18 (0.75) |
12 (0.49) |
0.27a) |
Corneal dystrophy, n (%) |
50 (2.11) |
36 (1.48) |
0.10a) |
Uveitis, n (%) |
6 (0.25) |
0 (0.00) |
0.01a)* |
Pseudoexfoliation syndrome, n (%) |
144 (6.09) |
180 (7.42) |
0.07a) |
Glaucoma suspicion, n (%) |
94 (3.97) |
37 (1.52) |
< 0.001a)* |
Glaucoma, n (%) |
171 (7.23) |
71 (2.93) |
< 0.001a)* |
Facodonesis, n (%) |
2 (0.08) |
1 (0.04) |
0.62a) |
Mature cataract, n (%) |
53 (2.24) |
16 (0.66) |
<0.001a)* |
Dry AMD, n (%) |
365 (15.43) |
429 (17.68) |
0.04a)* |
Exudative AMD, n (%) |
32 (1.35) |
22 (0.91) |
0.17a) |
Diabetic eye disease, n (%) |
43 (1.82) |
5 (0.21) |
< 0.001a)* |
Retinal degenerations, treated tears, n (%) |
23 (0.97) |
31 (1.28) |
0.34a) |
Vitrectomized eye, n (%) |
10 (0.42) |
3 (0.12) |
0.05a)* |
Prior refractive surgery, n (%) |
15 (0.63) |
4 (0.16) |
0.01a)* |
Prior ocular contusion, n (%) |
2 (0.08) |
4 (0.16) |
0.69a) |
Morbus Parkinson, n (%) |
15 (0.63) |
24 (0.99) |
0.20a) |
Memory disorders, n (%) |
42 (1.78) |
82 (3.38) |
< 0.001a)* |
Total number of complicating factors per patient, n (%) |
|
|
|
Mean ± SD |
0.49 ± 0.61 |
0.39 ± 0.61 |
< 0.001b)* |
0 |
1423 (60.14) |
1616 (66.58) |
|
1 |
811 (34.28) |
679 (27.98) |
|
2 |
123 (5.20) |
119 (4.90) |
|
3 |
8 (0.34) |
12 (0.49) |
|
4 |
1 (0.04) |
1 (0.04) |
|
a) Fisher's exact test, AMD: Age Related Macular Degeneration, b) t-Test, n = number of patients, *= statistically significant