Priya D Samalia1, Rachael L Niederer2,3. 1. Department of Ophthalmology, Canterbury District Health Board, 2 Riccarton Avenue, Central City, Christchurch, New Zealand. dr.priyasamalia@gmail.com. 2. Auckland District Health Board, Auckland, New Zealand. 3. Department of Ophthalmology, University of Auckland, Auckland, New Zealand.