1. Resnikoff S, Pascolini D, Etya'ale D, Kocur I, Pararajasegaram R, Pokharel GP, Mariotti SP: Global data on visual impairment in the year 2002. Bull World Health Org. 2004, 82: 844-851.
2. Cook C: Glaucoma in Africa: Size of the problem and possible solutions. J Glaucoma. 2009, 18: 124-8. 10.1097/IJG.0b013e318189158c.
3. Javitt JC: Preventing blindness in Americans: the need for eye health education. Surv Ophthalmol. 1995, 40: 41-4. 10.1016/S0039-6257(95)80045-X.
4. Central Statistical Agency of Ethiopia: Summary and Statistical Report of the 2007 Population and Housing Census. 2008, Federal Democratic Republic of Ethiopia Population Census Commission. Central Statistical Agency
5. The Oromia State Government: Socioeconomic Profile of Jimma Zone. Retrieved September 2008, [
http://www.oromiagov.org/general.asp
]