By p. Davidson, iyi^. frice Vs. 6d. This little volume on sight testing lias now reached its fifth edition and would therefore appear popular with the practitioner. The author lays great stress on the importance of the general practitioner including, in his daily work, that of refraction and the prescription of glasses to his patients direct. The author undertakes in his book to teach a simple ...

Cases of sight onset after extended periods of congenital blindness provide windows into visual development and brain plasticity. Such cases are extremely rare in the developed world. Here, we make the argument that in meeting a public health challenge in the developing world, that of providing treatment to curably blind children, we have the opportunity to have a beneficial impact on science a...