a slight trendp = 0.03
A slight trend towards a positive sphere was observed between 1 and 3 months postoperative (from a mean value of -0.04 ± 0.59 D to 0.16 ± 0.65 D (Wilcoxon test, p = 0.03), with no significant modifications afterwards (Wilcoxon test, p = 0.89) (Table 1 ).