Table 1

Visual acuity changes in the different groups of patients (on the treated eye)

No change in CBSImprovement of CBSWorsening of CBS
N=14 (64%)N=5 (23%)N=3 (14%)
Initial visual acuity
 0.2 (range 0.08 to 0.63)0.16 (range 0.05 to 0.3)0.5 (range 0.4 to 0.5)
 LogMAR −0.69LogMAR −0.86LogMAR −0.30
 (range −1.1 to −0.2)* (range −1.3 to −0.52)* §(range −0.4 to −0.3)* §
*K–W test p=0.027, M–W test p=0.027, M–W test p=ns, §M–W p=0.024
Visual acuity follow-up
 0.16 (range 0.05 to 0.8)0.3 (range 0.18 to 1.0)0.32 (range 0.32 to 0.5)
 LogMAR −0.79LogMAR −0.46LogMAR −0.49
 (range −1.3 to −0.1)(range −0.74 to 0)(range −0.49 to −0.3)
K-W test p=ns
Change in visual acuity
 LogMAR −0.000 (range −0.81 to 0.6)* LogMAR 0.4 (range 0.05 to 0.81)* §LogMAR −0.19 (range −0.19 to 0)* §
(Follow-up logMAR value minus initial logMAR value)
*K–W test p=0.022, M–W test p=0.022, M–W test p=NS, §M–W p=0.024
  • Data are given as median and range.

  • * Difference between all groups.

  • No change compared with improvement.

  • No change compared with worse.

  • § Worse compared with improvement.

  • Difference between all groups.

  • CBS, Charles Bonnet syndrome; K–W, Kruskal–Wallis; M–W, Mann–Whitney.