[The cause and management of intraocular lens dislocation into anterior vitreous cavity].

OBJECTIVE

To study the causes and management of the intraocular lens (IOL) dislocation into anterior vitreous cavity.

METHODS

The author retrospectively analyzed the causes of the IOL dislocation treated in the past 10 years. Twenty-eight dislocated IOLs were replaced after anterior vitrectomy.

RESULTS

The causes of the IOL dislocation were: (1) IOL vertically sank down into the vitreous cavity through the broken inferior zonules. (2) The superior haptics were not placed in the ciliary sulcus and overturned down into vitreous cavity because of the vitreous prolapse closing the ciliary sulcus. (3) Inferior haptics were put behind the posterior capsule and into the vitreous cavity. After follow-up for 6 months to 10 years, the postoperative best-corrected visual acuities (BCVAs) of 28 patients were 20/100 to 20/20. No complications happened.

CONCLUSIONS

The IOL dislocation into anterior vitreous cavity was related to the rupture of the posterior capsule, break down of the lens zonules, prolapse of the vitreous, improper position of implanted IOL and iris complication. The simplest and most effective method for management of IOL dislocation into anterior vitreous cavity is to directly remove the IOL from vitreous cavity after anterior vitrectomy and re-fixate it in the ciliary sulcus.