[1] Flinders Univ S Australia, NHMRC Ctr Clin Eye Res, Adelaide, SA 5042, Australia
[2] Tilganga Inst Ophthalmol, Kathmandu, Nepal
[3] Inst Med, BPKLCOS, Kathmandu, Nepal
[4] Southern Cross Care SA&NT, Adelaide, SA, Australia
[5] Kathmandu Univ, Dhulikhel Hosp, Dept Ophthalmol, Kavre, Nepal