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[Vitreous surgery for intraocular lens dislocated into vitreous cavity].

OBJECTIVE
To study the way to manage intraocular lenses (IOLs) dislocated into vitreous cavity.


METHODS
Three methods of vitreoretinal surgery were applied for 15 cases with severe dislocation of IOL into vitreous cavity: vitreoretinal surgery combined with simple IOL removal in 7 cases (simple group), vitreoretinal surgery combined with liquid perfluorocarbon (PFCL) applied for IOL removal in 3 cases and vitreoretinal surgery combined with IOL removal and fixation of IOL at ciliary sulcus in 5 cases.


RESULTS
The dislocated IOLs were removed successfully in all cases. The preoperative visual acuities were light perception to hand movement. Postoperatively, the patients were followed for 3 months to 3 years. In the cases with ciliary sulcus fixation of IOL, all their visual acuities were above 20/100 and the best visual acuity was 20/25. In the 10 cases without fixation of IOL, the corrected visual acuities were 20/1000 to 20/50. The complications were retinal detachment in 1 case, slight vitreous hemorrhage in 2 cases and temporary uveitis in 3 cases.


CONCLUSION
Vitreous surgery is the best way for the treatment of a case with IOL severely dislocated into the vitreous cavity, and such an IOL should be removed. Visual acuity can be improved significantly by the fixation of IOL at ciliary sulcus.