With its enlarged format and new design, this 4th Edition adopts a current evidence-based approach and contains over 40 per cent more references than before. This is the second Pickwell's prepared by Professor Evans and its practical, reality-based approach has been retained and enhanced with the use of clinical protocols and new appendices. All diagrams have been replaced and upgraded and together with comprehensive theory that links into to practice, Pickwell's 4th Edition is a unique reference for all optometrists, dispensing opticians, ophthalmologists and orthoptists.