Table 2

 Demographic variables and VA data for all patients operated in 1997–8

Driving licenceNo driving licencep Value
*Two sample, two tailed t test, **χ2 test.
No of patients407403
Mean age (years) (SD)70.8 (11.0)78.7 (8.8)<0.0001*
Age range (years)36–9130–96
Males (%)5614 <0.0001**
First eye surgery (%)7467 0.024**
Presenting visual acuity 20/200 or less of the eye to be operated (%)4860 0.0009**
Best corrected VA 20/200 or less of the eye to be operated (%)4456 0.0016**
Presenting visual acuity less than 20/40 of the better eye before surgery (%)3252 <0.0000**
Best corrected VA less than 20/40 of the better eye before surgery (%)2548 <0.0000**
Best corrected VA 20/40 or less of the operated eye after surgery (%)1023 <0.0000**
Best corrected VA 20/40 or less of the better eye after surgery (%)518 <0.0000**