Table 1 Comparison of eyes that suffered and did not suffer an un-explained loss of visual acuity following silicone oil removal

Age

49.2 ± 16.4

47.2 ± 20.9

0.96

Gender

11 M 8 F

163 M 98 F

0.81

0.83

0.32–2.13

Cardiovascular disease

0% (0/19)

4.2% (11/260)

1.00

0.90

0.32–2.49

Diabetes mellitus

47.4% (9/19)

29.9% (78/261)

0.13

2.11

0.82–5.40

Systemic hypertension

42.1% (8/19)

28.1% (73/260)

0.20

1.86

0.72–4.82

Giant retinal tear

10.5% (2/19)

6% (17/282)

0.626

1.70

0.39–8.60

Diabetic TRD

47.4% (9/19)

25.5% (72/282)

0.071

2.39

0.93–6.11

PVR

31.6% (6/19)

59.6% (168/282)

0.007

0.261

0.10–0.71

Macula off RD

63.2% (12/19)

66.4% (162/244)

0.80

0.87

0.33–2.29

5000 cs SO

57.9% (11/19)

57.1% (140/245)

0.807

0.84

0.33–2.18

1000 cs SO

42.1% (8/19)

42.9% (105/245)

0.813

0.84

0.32–2.16

BCVA pre SO removal (Snellen)

logMAR = 1.55 ± 0.74 (20/710)

logMAR = 1.43 ± 0.72 (20/538)

0.44

Baseline pseudophakia

33.3% (6/18)

31% (77/248)

0.80

0.23

0.07–0.75

IOP pre-removal of SO (mm Hg)

19.6 ± 6.9 mm Hg

14 ± 7.3 mm Hg

0.0002

Duration of SO tamponade (months)

14.8 ± 4.4 months

9.3 ± 10.9 months

<0.0001