METHODS: Prospective study. ICL V4c implantation was performed on 150 cases(300 eyes)with high myopia, and the changes of visual acuity, intraocular pressure,vault and anterior chamber angle were recorded before and 1d, 1mo, 3mo, 6mo and 1a after operation. Repeated measurement analysis of variance and LSD-t test were used to analyze the data.

RESULTS: After 1d, 1mo, 3mo, 6mo, 1a operation, the recovery of UCVA was significantly higher than that before operation(F=98.2, P<0.01); there were statistically significant differences in AOD500, AOD750, TISA500, TISA750 and SSA of nasal side before and after operation(F=108.256, 112.342, 164.856, 316.549, 115.338, P<0.01); there were statistically significant differences in AOD500, AOD750, TISA500, TISA750 and SSA of temporal side before and after operation(F=102.68, 548.47, 93.37, 316.549, 117.698, all P<0.01); the parameters of each angle decreased gradually in the 1d, 1mo and 3mo after operation on both sides, and there was statistical difference in the two comparisons(all P<0.05), but there was no statistical significance in the parameters of each angle in the 3mo, 6mo and 1a after operation(all P>0.05).

CONCLUSION: After ICL V4c implantation, the anterior chamber angle parameters in the horizontal direction of 1d, 1mo, 3mo, 6mo and 1a were smaller than those before operation, and tended to be stable after 3mo.