AIM: To investigate the clinical effect of cataract combined lens dislocation greater than 2 quadrants' patients after having phase I intracapsular cataract extraction and anterior vitrectomy, postoperative corrected vision greater than 0.3, and then taking phase II small incision suture-fixation of intraocular lens suspension.

METHODS: Totally 34 cases with cataract combined lens dislocation greater than 2 quadrants had been treated in our hospital from July 2014 to December 2016. We investigated their 1wk, 1 and 3mo postoperative complications and the uncorrected visual acuity, best corrected visual acuity, intraocular pressure, corneal astigmatism who took phase II small incision suture-fixation of intraocular lens suspension with corrected vision greater than 0.3 after having phase I intracapsular cataract extraction and anterior vitrectomy.

RESULTS: Along with the recovery time extension, patients' uncorrected visual acuity and best corrected visual acuity increased obviously than preoperative in each phase. On the 3mo postoperatively, the best corrected visual acuity of 1 eyes was between 0.3 and 0.1, 8 eyes was between 0.5 and 0.3, 16 eyes was between 0.7 and 0.5, and 9 eyes was better than 0.7. The best corrected visual acuity was achieved or near the best corrected visual acuity before surgery. Intraocular pressure rechecked became in the normal range at 1wk, 1 and 3mo postoperative. Surgery did not significantly increase the corneal astigmatism.

CONCLUSION: It is a safe and effective way in improving eyesight effectively, with stable intraocular pressure and fewer complications towards cataract combined lens dislocation greater than 2 quadrants' patients having phase I intracapsular cataract extraction and anterior vitrectomy, whose postoperative corrected vision greater than 0.3, and then phase II small incision suture-fixation of intraocular lens suspension.