Working Paper
Khanna, Rohit C, Srinivas Marmamula, Sannapaneni Krishnaiah, Pyda Giridhar, Subhabrata Chakrabarti, and Gullapalli N Rao.
"Changing trends in the prevalence of blindness and visual impairment in a rural district of India: Systematic observations over a decade." Indian journal of ophthalmology 60, no. 5 (2012): 492-497.