Posteriorly dislocated capsular tension ring leading to rhegmatogenous retinal detachment

Description

A 54-year-old woman presented with sudden diminution of vision in her left eye 4 months before. Medical history revealed that she underwent a phacoemulsification 1 year before in the left eye and 4 years before in the right eye. Snellen visual acuity in the right eye was 20/20 while she was just able to count fingers at 1 m in the left eye. She had a divergent squint of 30 prism dioptres in the left eye. The right eye had a well-centred foldable posterior chamber intraocular lens (PCIOL) in the capsular bag, while the left eye had a rigid polymethyl methacrylate (PMMA) PCIOL in the sulcus with a large posterior capsular defect (figure 1A). On fundus examination of the left eye, we found a total rhegmatogenous retinal detachment with a large punched-out toxoplasma scar at the macula, three retinal horseshoe tears superonasally at the equator (figure 2B) and a...

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