Table 2: Baseline characteristics of each group.

Control groupAir group value

Type of gas (n)
Air : SF6 : C3F8
15 : 55 : 271 : 0 : 0<0.001
Age (mean ± SD, yr)56.9 ± 9.858.6 ± 8.80.351
Sex (M : F)40 : 3234 : 370.401
BCVA (mean ± SD, logMAR)1.38 ± 1.111.11 ± 1.050.143
IOP (mean ± SD, mmHg)13.6 ± 2.713.0 ± 3.10.237
Axial length (mean ± SD, mm)25.14 ± 2.1124.83 ± 1.650.336
Proportion of high myopia (n, %)23 (31.9%)16 (22.5%)0.282
Macula
On : off
32 : 4036 : 350.614
Number of retinal breaks
(mean ± SD)
1.8 ± 1.31.6 ± 1.00.315
Range of retinal detachment
(mean ± SD, hours)
4.4 ± 1.74.6 ± 1.90.357
Lens state
Phakic : pseudophakic
58 : 1452 : 190.422
Inferior break (n, %)28 (38.9%)18 (25.4%)0.111
Use of PFCL (n, %)20 (27.8%)21 (29.6%)0.336

Independent student’s t-test. Chi-square test. BCVA: best-corrected visual acuity; IOP: intraocular pressure; SD: standard deviation; logMar: logarithm of the minimum angle of resolution; PFCL: perfluorocarbon liquid.