Table 3 Relative frequencies (“success rates” [%]) of two outcome indicators (visual rehabilitation and refractive accuracy) 2 – 5 weeks after cataract surgery, stratified for presence / absence of each putative external factor, based on the data of three outpatient centres
“Refractive accuracy” │SE – TR │ ≤ 0.5 dpt | “Visual rehabilitation”visual acuity cc ≥ 1.0 | |||||
|---|---|---|---|---|---|---|
Absence | Presence | Difference | Absence | Presence | Difference | |
[%] | [%] | Percentage points | [%] | [%] | Percentage points | |
Sociodemographic external factors | ||||||
Age ≥ 80 years | 67.1 | 69.4 | - 2,3 | 51.6 | 33.1 | 18.5 |
Female gender | 67.9 | 69.6 | - 1,7 | 49.2 | 45.4 | 3.8 |
Quantitatively documented external factors | ||||||
Baseline visual acuity cc ≤ 0.1 | 70.0 | 59.6 | 10,4 | 48.6 | 34.3 | 14.3 |
Severe nearsightedness (myopia; axial eye length ≥ 25 mm) versus normal eye length (22.01 – 24.9 mm) | 70.8 | 58.6 | 12,2 | 48.5 | 47.1 | 1.4 |
Severe farsightedness (hyperopia, axial eye length ≤ 22 mm) versus normal eye length (22.01 – 24.9 mm) | 70.8 | 62.5 | 8,3 | 48.5 | 33.6 | 14.9 |
Qualitatively documented external factors | ||||||
Presence of at least one pre-existing condition (potentially) reducing visual acuity | 69.5 | 67.6 | 1,9 | 48.5 | 33.6 | 14.9 |
Presence of at least one known previous ocular surgery | 69.0 | 65.9 | 3,1 | 47.6 | 26.9 | 20.7 |
Presence of at least one surgically relevant ocular risk factor | 70.0 | 65.6 | 4,4 | 49.0 | 41.1 | 7.9 |