H S Mudhar1, N Tiffin2, Z Currie3, S Salvi3. 1. National Specialist Ophthalmic Pathology Service (NSOPS), Department of Histopathology, Royal Hallamshire Hospital, Sheffield, UK. 2. Department of Histopathology, Royal Hallamshire Hospital, Sheffield, UK. 3. Department of Ophthalmology, A-Floor, Royal Hallamshire Hospital, Sheffield, UK.