Table 2 Concentrations of oestradiol (E2) in serum and superoxide dismutase (SOD) activity in erythrocytes in patients with age-related cataract and controls

n = 37

n = 42

n = 6

n = 16

Oestradiol levels (pmol/L) ^a

50.7 ± 17.2

15.4 ± 13.0

46.0 ± 9.0

9.6 ± 6.6

n = 41

n = 60

n = 6

n = 16

SOD activity (U/ml)

4.1 ± 0.9

4.1 ± 1.0

3.9 ± 1.2

4.2 ± 1.0