Table 3 Summary of clinical and refractive findings in ptotic eyes with/without amblyopia in the data from ptotic eyes before ptosis repair surgery

Number of eyes

53

14

Ptosis severity

0.18

 Mild (MRD1 ≥ 2 mm)

3 (5.7 %)

3 (21.4 %)

 Moderate (0 ≤ MRD < 2 mm)

33 (62.3 %)

7 (50.0 %)

 Severe (MRD1 < 0 mm)

17 (32.0 %)

4 (28.6 %)

Spherical equivalent refraction (number %)

0.01*

 ≥ − 1.00 D

42 (79.2 %)

6 (42.9 %)

 < −1.00 D

11 (20.8 %)

8 (57.1 %)

 Mean ± SD

−1.37 ± 1.20

−1.92 ± 1.73

0.09

 ≤ − 1.50 DC (number, %)

22 (41.5 %)

10 (71.4 %)

0.04*

Oblique astigmatism (number, %)

14 (25.9 %)

8 (57.1 %)

0.03*

Refractive type

0.01*

 Hyperopia

9

1

 Myopia

11

8

 Emmetropia

33

5