The International Society for Clinical Electroretinography provides a link between scientists who are enlarging our understanding of the normal functioning of the visual pathway, and clinicians who investigate and treat visual disturbances. The chief function of the Society is to organise symposia, where, with skill born of long practice, the participants obtain the benefits of both social and scientific contact, without detriment to either. The result- ing spread of information is documented both in the society's Newsletter, and by the publication of volumes such as this, the record of the...