TY - ECHAP AU - Dandona R. AU - Dandona L. AU - Kuper H. AU - Tasman W. AU - Jaeger E. BT - Duane’s Clinical Ophthalmology CN - Y CY - Philadelphia LA - eng LB - Indiabook PB - Lippincott Williams & Wilkins PP - Philadelphia PY - 2008 T2 - Duane’s Clinical Ophthalmology TI - Global patterns of blindness ER -