Fig. 2. Time course of changes in the number of ophthalmic solutions administered after treatment. There was no significant difference in the number of ophthalmic solutions administered at 3 months following treatment between the phaco and medication groups (p = 0.614). At 6 and 9 months, 1 year, and 1.5, 2, 2.5, and 3 years after treatment, the number of ophthalmic solutions administered to the medication group was higher than that administered to the phaco group (p = 0.005, p = 0.001, p = 0.006, p < 0.001, p = 0.028, p = 0.012, and p = 0.009, respectively). Error bar indicates standard deviation. For each time point evaluated, statistically significant differences are represented by an asterisk (^*p <0.05).