Table 1

Quantitative variables of the three visual field (VF) tests (pre-COVID test, VF test 1 (with unfitted mask), and VF test 2 (with fitted mask)) performed by the 12 patients (18 eyes) included in the study, and comparisons between the three VF test

Pre-COVID VF testVF test 1
(p1)
VF test 2
(p2)
VF test 1 versus 2
(p3)
VFI (%)92 (68/99)84 (53/97)92 (69/99)0.004*
0.001*0.597
MD (dB)−6.0 (−13.42/2.33)−7.57 (−14.88/−1.97)−5.45 (−12.77/−1.07)0.007*
0.004*0.648
FL (%)6 (0/20)13 (0/60)0 (0/38)0.016*
0.047*0.668
FPR (%)1 (0/15)1 (0/7)2 (0/11)0.066
0.4080.658
FNR (%)6 (0/11)7 (0/53)5.5 (0/11)0.084
0.2220.810
Length (s)381 (299/451)374 (304/456)373.5 (302/441)0.500
0.3060.845
  • Results are expressed as median (minimum/maximum).

  • Pre-COVID test: last VF test before the pandemic; VF test 1: VF test performed with patient’s mask; VF test 2: VF test performed with well-fitted surgical mask; p1: Comparison between pre-COVID VF test and VF test 1; p2: Comparison between pre-COVID VF test and VF test 2; p3: Comparison between VF test 1 and VF test 2.

  • *p<0.05.

  • FL, fixation losses; FNR, false negative responses; FPR, false positive responses; MD, mean deviation; VFI, visual fixation index.