Intraocular lens implant subluxation and extrascleral extension secondary to ciliochoroidal melanoma
B. Order ultrasound biomicroscopy
Intraocular lens (IOL) dislocation is an uncommon complication of cataract surgery, estimated to occur after 0.3% to 2.0% of cases.1,2 Risk factors for late postoperative IOL dislocation, defined as dislocation 3 or more months following surgery, include etiologies of zonular weakness such as pseudoexfoliation syndrome, retinitis pigmentosa, trauma, high myopia, prior vitreoretinal surgery, and connective tissue diseases.3 Investigations suggest 0.6% of patients with pseudophakia with these risk factors require corrective surgery for dislocations within 10 years of cataract surgery.2 Surgery typically is indicated for decreased visual acuity or lens dislocation-induced retinal detachment, glaucoma, or uveitis.4 Both IOL exchange and suture fixation are potential treatments.3