Epidemiologic Approach to Clinical Research: Design Strategies Emily Y. Chew John Paul SanGiovanni Frederick L. Ferris III Now of first principles we see some by induction, some by perception, some…
Basic Statistics and Epidemiology for Ophthalmologists Andrew F. Smith The focus of this chapter is to explore and explain the main mathematic concepts used to describe and interpret the complex…
Recommendations for Ophthalmic Practice in Relation to the Human Immunodeficiency Virus Amy Chomsky Denis M. O’Day In 1985, in response to growing concerns the National Society to Prevent Blindness, in…
Ocular Abnormalities in Leprosy Naushad Hussein Ivan R. Schwab Leprosy, also known as Hansen’s disease, is a chronic disease of the skin and peripheral nerves that produces skin lesions, peripheral…
Onchocerciasis Hugh R. Taylor Eric Pearlman DEFINITION Onchocerciasis, also known as “river blindness,” is an insect-borne disease caused by a nematode worm, Onchocerca volvulus, and transmitted by blackflies of the…
Corneal Opacification in the Developing World Praveen Nirmalan Prashant Garg Gullapalli N. Rao Corneal Opacification in Resource-Poor Countries Blindness is a major public health problem globally.1 In 2002 an estimated…
Pathogenesis and Control of Blinding Trachoma Jaya D. Chidambaram Chandler R. Dawson Thomas M. Lietman Trachoma is a chronic infectious keratoconjunctivitis that is a major cause of blindness in many…
Nutritional Blindness: Xerophthalmia and Keratomalacia Alfred Sommer Xerophthalmia and keratomalacia are the most common, most devastating ocular diseases attributable to nutritional deficiency. In general, nutritional blindness refers specifically to these…
Cataract and Delivery of Surgical Services in Developing Nations Larry Schwab Hugh R. Taylor Jamie La Nauze MAGNITUDE OF CATARACT BLINDNESS The World Health Organization (WHO) estimated that in 1990,…
Epidemiology of Ocular Trauma Tien Yin Wong James M. Tielsch Ocular trauma is an important, preventable public health problem worldwide. As many as half a million people in the world…
