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Preventive medicine, realizing the importance of early diagnosis for effective treatment, has been stressing a campaign of warning and information for the laity on premonitory symptoms and the essential need of professional examinations and advice. This is especially valuable in the field of ophthalmology, where apparently insignificant symptoms are ignored and ill advised self treatment, so called, is attempted only after vision has become definitely impaired. This serious situation has been dealt with by well qualified organizations, such as the National Association for the Prevention of Blindness, as well as by free lance ophthalmologists. One of these is the author of the little book under consideration, an ophthalmologist of standing and experience, who has, besides, the gift, so valuable to the popularizer in any field, of wit, a clear and illuminating style and deep interest in the needs and human nature of the lay reader.
Introductory chapters discuss in simple