Comparisons of visual functioning and Rasch scores between subjects with bilateral cataract and those with bilateral surgery
| Bilateral cataract surgery (n=151) | Bilateral significant cataract (n=515) | p Value* | Bilateral minimal cataract (n=2126) | p Value* | |
| Mean Rasch score (95% CI) | 3.38 (3.17 to 3.58) | 3.11 (3.00 to 3.23) | 0.029 | 3.75 (3.70 to 3.79) | <0.001 |
| Adjusted mean Rasch score (95% CI)† | 3.25 (2.99 to 3.50) | 3.05 (2.86 to 3.23) | 0.095 | 3.47 (3.38 to 3.56) | 0.002 |
| None/mild visual acuity impairment | (n=134) | (n=316) | (n=1978) | ||
| Mean Rasch score (95% CI) | 3.49 (3.30 to 3.70) | 3.46 (3.34 to 3.58) | 0.835 | 3.79 (3.75 to 3.83) | <0.001 |
| Adjusted mean Rasch score (95% CI)† | 3.38 (3.14 to 3.63) | 3.35 (3.15 to 3.54) | 0.766 | 3.50 (3.42 to 3.59) | 0.018 |
| Moderate/severe visual acuity impairment | (n=17) | (n=199) | (n=148) | ||
| Mean Rasch score (95% CI) | 2.51 (1.78 to 3.23) | 2.56 (2.34 to 2.77) | 0.897 | 3.19 (3.00 to 3.39) | 0.028 |
| Adjusted mean Rasch score (95% CI)† | 2.38 (1.60 to 3.16) | 2.54 (2.15 to 2.93) | 0.670 | 2.71 (2.27 to 3.15) | 0.120 |
Data are presented as mean (SD) or number (%), as appropriate.
Cardiovascular disease is defined as a history of angina, myocardial infarction or stroke; low socioeconomic status is defined as having a primary or lower education and an individual monthly income less than $S2000.
↵* p Value to test for difference between bilateral cataract surgery compared with bilateral cataract and both eyes healthy, respectively, based on either a t test or χ2 test, as appropriate.
↵† Adjusted for age, gender, cardiovascular disease, current cigarette smoking status, low socioeconomic status and the presence of eye diseases (including age-related macular degeneration, diabetic retinopathy and glaucoma).