Application of UBM after 25-gauge pars plana anterior vitrectomy in cataract children

Objective To observe the features of sclera puncture opening recovery after 25-gauge pars plana anterior vitrectomy in cataract children by UBM.Methods Seven children(11 eyes)with congenital cataract received 25-gauge pars plana anterior vitrectomy.The time of vitrectomy,clinical effect before and after surgery,leak from sclera puncture opening,intraocular pressure changes,complications and UBM imaging character of sclera puncture opening were observed.Results The mean time of vitrectomy was(40.9±8.4)seconds in all children.Few vitreous fluctuations were observed intraoperatively,postoperative inflammation was mild and recovered soon,no severe complications or leak occurred in any eye.The intraocular pressure was table,which was(13.41±3.44)mmHg(1 kPa=7.5 mmHg)before surgery,(13.77±4.47)mmHg,(13.11±3.20)mmHg,(13.39±2.55)mmHg at 1 day,1 week,1 month after surgery.Compared with that before surgery,there were statistical differences at 1 day,1 week,1 month after surgery(All P0.05).UBM imaging showed that the sclera puncture opening was seen as a gap running through the sclera and pars plana corporis ciliaris with a low continuous echo at 3 days after surgery,which became thin at 7 days after surgery.The inner puncture position opening recovered at 2 weeks after surgery.Eight eyes(72.7%)couldn't detect the pars plana puncture opening on UBM imaging at 3 weeks after surgery.All the puncture opening recovered at 4 weeks after surgery.Conclusion UBM imaging shows that the sclera puncture opening after sutureless 25-gauge pars plana anterior vitrectomy in cataract children recovers soon,and no leak or vitreous incarceration is observed.UBM imaging is in accordance well with the clinical observations.