Table 3 Clinical characteristics of eyes without preoperative macular edema at baseline and at 6 months after surgery.

Age (years)

67.4 ± 5.0 (56.0 ~ 75.0)

68.6 ± 8.3 (49.0 ~ 89.0)

0.116^a

ERM stage

 Stage 1

0 (0.0%)

10 (7.0%)

0.011^b

 Stage 2

12 (21.1%)

50 (35.2%)

 Stage 3

42 (73.7%)

72 (50.7%)

 Stage 4

3 (5.3%)

10 (7.0%)

DRIL severity

 No DRIL

9 (15.8%)

44 (31.0%)

0.010^b

 Mild DRIL

39 (68.4%)

91 (64.1%)

 Severe DRIL

9 (15.8%)

7 (4.9%)

Preoperative CFT (µm)

510 ± 73 (393 ~ 642)

476 ± 78 (333 ~ 702)

0.001^a

Preoperative EIFL thickness (µm)

182 ± 93 (60 ~ 397)

146 ± 64 (77 ~ 400)

0.026^a

Preoperative ONL thickness (µm)

257 ± 81 (139 ~ 475)

259 ± 53 (175 ~ 424)

0.842^a

Preoperative “cotton ball” sign

21 (36.8%)

47 (33.1%)

0.623^b

Preoperative EZ disruption

24 (42.1%)

24 (16.9%)

< 0.001^b