AIM:To evaluate safety and stability of ICL implantation treatment of high myopia through the observation of anterior segment parameters such as ACD and ICA over time pre- and post-operation changes by Pentacam.

METHODS:According to the proposed inclusion criteria, 90 eyes(48 patients)with high myopia who accepted ICL implantation treatment were selected. The mean follow-ups are 6 months. Anterior segment parameters such as ACD, ICA(3'clock), corneal aberration(CA), K-value and CCT were measured by Pentacam at pre- and postoperative different follow-up time points. Using SPSS 19.0 statistical software to describe the indexes distribution at different time points. We compared changes by matching t-test between preoperation and postoperation.

RESULTS:The indexes presented normal distribution. During the follow-ups of all the patients, ACD and ICA(3'clock)were lower than before. Differences were all statistically significant(P<0.05). About CA, CTA and CLOA had no significant difference between preoperative and postoperative(P>0.05); but CHOA increases statistically significant(P<0.05). K-value slightly reduces, Differences are all statistically significant(P<0.05). CCT had no significant difference(P>0.05). For the indexes with statistically significant difference, they achieved stable state in postoperative 1-month.

CONCLUSION:After ICL implantation treatment of high myopia,changes mainly include the ICA and ACD decrease, CHOA increases, K decreases by Pentacam observation,and it is within the scope of the security,all the values are stable during the follow-ups, no complications occur, but the long-term effect need further follow-ups.