Thapa, S S, Thapa, R, Paudyal, I, Khanal, S, Aujla, J, Paudyal, G & van Rens, G H M B 2013, ' Prevalence and pattern of vitreo-retinal diseases in Nepal: the Bhaktapur glaucoma study ', BMC Ophtalmology, vol. 13, 9 . https://doi.org/10.1186/1471-2415-13-9 BMC Ophthalmology BMC Ophtalmology, 13:9. BioMed Central