Night Vision: Basic, Clinical and Applied AspectsMuch has been discovered in recent years about the way our visual system copes with very low light levels, and this detailed up to date book describes the light and dark adaptation of receptoral and post receptoral mechanisms from a number of perspectives. The authors emphasize the importance of the study of achromatosia, a rare congenital condition in which the visual mechanisms that mediate day vision are absent while those that mediate night vision