The subject of strabismus is approached from a new angle in this book: it is considered a visual motor anomaly of nervous system development. This hypothesis provides the framework for the questions asked about anatomy, physiology, clinical phenomenology and symptomatology. The author portrays a clear conception of this human flaw and at the same time explores basic knowledge of the visual nervous system's normal function, development, and design. The relevance of visual psychophys- ics, central nervous system imaging technology, and developmental neuropathology is examined.