Application of two capsular Tension ring sclera fixing methods in treatment of moderate and severe lens subluxation / 眼科新进展

ABSTRACT

Objective To compare the clinical effects of one-stage modified capsular tension ring (MCTR) scleral fixation and second-stage capsular tension ring (CTR) capsular bag complex scleral fixation in the treatment of moderate and severe subluxation of lens.Methods Retrospective study.Thirty cases (43 eyes) of patients with moderate and severe subluxation of lens from January 2012 to December 2015 were collected.Those patients were treated with phacoemulsification cataract extraction and MCTR or CTR and IOL intracapsular implantation under local anesthesia.23 eyes in group A were treated with MCTR combined with IOL implantation and one-stage scleral fixation.20 eyes in group B were treated with one-phase CTR combined with IOL implantation and second-stage of CTR-capsular bag complex scleral fixation after 3 to 6 months.The best corrected visual acuity,location of the postoperative capsular bag complex and complication were observed at 6 months after surgery.Results Postoperative 6-month,the best corrected visual acuity ≥0.6 were in 87％,95％ of the patients m group B,and there was no statistical significance difference (P ＞ 0.05).All CTR and IOL were located in the capsular bag after surgery.Two eyes in group A and 1 eye in group B were observed with moderate contraction and off-center of capsular bag,there was no significant difference (P ＞ 0.05).All groups achieved response after YAG laser anterior capsule relaxing incisions.Early complications of postoperative (1 month)3 eyes in group A and 1 eye in group B were observed with exudative membrane in anterior chamber;5 eyes in group A and 2 eyes in group B were with transient high intraocular pressure,and there was no significant difference (all P ＞ 0.05).Long-term complications of postoperative (6 months)3 eyes in group A and 1 eye in group B were observed with after cataract,and there was no significant difference (P ＞ 0.05).All groups conducted YAG laser posterior capsulotomy.Conclusion The location stability of the capsular complex after one-stage MCTR scleral fixation or secondstage CTR capsular bag sclera fixation is good.And the treatment is effective for moderate and severe lens dislocation.