“…As a result, there was considerable debate about what should be taught to medical students about the eye and refraction, what general practitioners should know, and even what approach should be made to state licensing boards. 6,[20][21][22][23][24][25] The improved understanding of refraction had profoundly changed ophthalmic practice, so that an apparently menial task originally left to opticians and to jewelers now became of economic importance to the oculists. Despite the concerns about quality of care and training, as well as the effort devoted not only to distinguishing between oculists and opticians but also to ensuring that the public knew the difference, the underlying issue was one of competition and economic security.…”