Blindness due to refractive errors is a substantial public health problem in many parts of the world. Its presence implies inadequate eye care services in the population concerned since treatment of refractive errors is probably the simplest and most cost effective of eye care interventions. Studies on barriers to uptake of optical services among school children are few all over the world. Yet recommendations from studies on refractive errors may not be meaningful if children with detected refractive errors do not wear glasses for one reason or another. The study contained in this book gave a succinct, yet detailed outlook of this situation in a typical urban setting in Africa’s most populous nation. The meticulous research protocols and layout make this book a guiding companion for health care and allied professionals and students alike who might contemplate research work among school children anywhere in the world. Governmental and non-governmental organizations would also find this work instructive.