METHODS: Prospective study. Totally 50 eyes of 50 cases with myopia who were underwent ICL surgery from September 2019 to October 2019. Ocular surface disease index questionnaire(OSDI), fluoresceine staining of cornea tear break up time(TBUT), Schirmer Ⅰ test(SⅠt), and tear meniscus were measured before and 1wk, 1 and 3mo after surgery.

RESULTS: The scores of OSDI questionnaire and corneal staining were significantly increased at 1wk and 1mo after operation(P<0.05). There was a difference between 3mo and 1wk pastoperatve(χ²=5.267,P=0.022), and recovered to the preoperative level at about 3mo. Corneal staining scores were significantly positively correlated with OSDI questionnaire scores at all time points(r_s>0, P<0.05). TBUT decreased significantly at 1wk and 1mo after operation(P<0.05), and returned to the preoperative level 3mo after operation. There was no significant difference in the basal tear volume(SⅠt)and the height of lacrimal river in the middle of lower eyelid between before and after operation(P>0.05).

CONCLUSION: The stability of tear film on the ocular surface will be affected by ICL implantation in the early postoperative period, and the patients will have different degrees of dry eye related symptoms. OSDI questionnaire score can be used to evaluate their subjective discomfort symptoms. However, at 3mo after operation, the stability of tear film on the surface of eyes recovered to the preoperative level. The higher the positive score of corneal staining was, the more obvious the subjective discomfort was.