Fig. 3

The difference of intraocular pressure between baseline (preoperation) and each time point in eyes undergoing the standard method of phakic intraocular lens (PIOL) implantation and Ophthalmic Viscosurgical Device-free method of PIOL implantation. Error bars represent standard error of mean. The asterisk represents statistically significant differences between the two groups (8.3, 95% CI 5.8 to 10.8; p < 0.001)