Table 2 Baseline characteristics of the four groups

Age (years)

68.96 ± 1.40 (55–79)

71.40 ± 1.18 (57–82)

60.91 ± 1.61 (45–73)

63.95 ± 1.80 (51–77)

HbA1c (%)

-

6.67 ± 0.14 (5.90–8.20)

6.40 ± 0.13 (5.20–8.10)

6.99 ± 0.18 (5.80–8.70)

Duration of DM (years)

-

22.69 ± 1.18 (13–34)

13.86 ± 1.02 (5–21)

16.10 ± 0.87 (8–23)

Central macular thickness (μm)

222.77 ± 2.74 (189–242)

217.36 ± 2.06 (197–241)

218.14 ± 2.78 (198–242)

225.43 ± 3.28 (198–250)

Preoperative straylight (log(s))

2.08 ± 0.05 (1.56–2.37)

2.18 ± 0.04 (1.65–2.35)

2.19 ± 0.04 (1.48–2.36)

2.13 ± 0.04 (1.56–2.36)

Preoperative BCVA (LogMAR)

0.48 ± 0.04 (0.20–0.90)

0.48 ± 0.03 (0.30–0.70)

0.56 ± 0.05 (0.20–1.00)

0.58 ± 0.04 (0.30–1.00)

Postoperative straylight (log(s))

1.21 ± 0.04 (0.68–1.43)

1.44 ± 0.06 (1.14–2.03)

1.45 ± 0.03 (1.19–1.69)

1.70 ± 0.09 (1.16–2.24)

Postoperative BCVA (LogMAR)

0.08 ± 0.01 (0.00–0.18)

0.10 ± 0.01 (0.00–0.18)

0.10 ± 0.02 (0.00–0.18)

0.14 ± 0.02 (0.00–0.30)