Table 1 Comparison of patient characteristics of all study eyes with iERM at baseline.

From: Comparison of the effect of air tamponade versus no tamponade after pars plana vitrectomy for idiopathic epiretinal membrane

Parameter

Total (N = 145)

BSS (N = 66)

Air (N = 79)

p value

Age

65.27 ± 8.29

64.95 ± 8.65

65.53 ± 8.03

0.678*

Sex (male/female)

50/95

24/42

26/53

0.663†

Operated eye (right/left)

76/69

35/31

41/38

0.892†

Lens status (phakic/IOL)

132/13

63/3

69/10

0.090†

VA (logMAR)

0.35 ± 0.25

0.33 ± 0.25

0.36 ± 0.25

0.425*

AXL (mm)

23.48 ± 1.14

23.41 ± 0.86

23.54 ± 1.33

0.496*

SE (D)

 − 0.19 ± 2.40

0.08 ± 1.90

 − 0.43 ± 2.73

0.203*

IOP (mmHg)

15.24 ± 2.70

15.62 ± 2.66

14.92 ± 2.70

0.127*

CMT (μm)

393.98 ± 74.92

388.82 ± 69.65

399.23 ± 80.12

0.073*

gpRNFLT (μm)

105.66 ± 15.38

105.39 ± 17.41

105.88 ± 13.59

0.875*

  1. Values are presented as n or mean ± standard deviation.
  2. iERM idiopathic epiretinal membrane, BSS balanced salt solution, Air air tamponade, IOL intraocular lens, VA visual acuity, logMAR logarithm of the minimum angle of resolution, AXL axial length, SE spherical equivalent, D diopters, IOP intraocular pressure, CMT central macular thickness, gpRNFLT global peripapillary retinal nerve fiber layer thickness.
  3. *p values were derived by independent t tests.
  4. †p values were derived by Pearson’s chi-square tests.
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