Clinical observation of intraocular pressure in miosis and mydriasis states after the implantation of posterior chamber phakic intraocular lens with a central port
Objective To observe the effects of mydriasis or miosis on intraocular pressure(IOP)after implanta-tion of posterior chamber phakic intraocular lens with central hole design(ICL V4c).Methods This was a prospective study.A total of 102 patients(102 eyes)who underwent ICL V4c implantation in the refractive department of Wuhan Bright Eye Hospital from September 2021 to December 2021 were collected and randomly divided into two groups:mydria-sis group(48 eyes)and miosis group(54 eyes).After the surgery,the corresponding medications were used to establish mydriasis or miosis models in two groups.IOP was measured and recorded before the surgery,as well as at 2 hours,4 hours,1 day,1 week,and 1 month after the surgery.Patients with abnormal IOP were treated accordingly.Results At 2 hours after the surgery,the IOP in both groups was significantly higher than that before the surgery(P<0.05).At 4 hours,1 day,1 week,and 1 month after the surgery,the IOP in both groups decreased and showed no significant differ-ence compared to before the surgery(P>0.05).There was no significant difference in IOP between the two groups at each time point(P>0.05).The proportion of patients with early postoperative IOP abnormalities was higher in the mydriasis group than in the miosis group,but the distribution proportion showed no significant difference(P>0.05).Conclusions Mydriasis or miosis has no significant control effect on early postoperative IOP in patients undergoing ICL V4c implantation.