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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)