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Table 2 Pre and post-operative values of best corrected visual acuity (BCVA) and macular hole volume (MHV)

From: Sulfur hexafluoride (SF6) versus perfluoropropane (C3F8) tamponade and short term face-down position for macular hole repair: a randomized prospective study

Size of the hole

SF6

C3F8

Preoperatively

1 week

1 month

preoperatively

1 week

1 month

Small

      

 BCVA

0.643

0.225

0.175

0.695

0.35

0.085

 MHV

21476439.05

2659017.94

125964

22394832.6

2237618.05

117937.53

Medium

      

 BCVA

0.7333

0.36

0.316

1

0.7

0.38

 MHV

38628154.71

1855745.73

1535126.93

37941937.36

1946731.8

1694831.07

Large

      

 BCVA

1.305

0.426

0.413

1.2

0.75

0.35

 MHV

173154648.9

91131802.78

8354755.33

169315684.3

87531967.08

7682391.04

  1. We divided the patients into two groups depending on the type of tamponade used. Visual acuity is expressed in LogMAR and hole volume in µm3. SF6 = sulfur hexafluoride; C3F8 = perfluoropropane; small (<250 µm), medium (>250–<400 µm), large (>400 µm)