Hard cover book,The Clinical Use of Prisms Author: Ernest Edmund Maddox Publisher: John Wright & Co Date: 1907 5th Edition Further Information: Front cover & spine blue cloth title, publisher details and author name in gilt lettering.non-fictionThe subject volume The Clinical Use of Prisms; and the Decentring of Lenses is a seminal treatise on ophthalmic optics, binocular vision, and the correction of eye muscle imbalances (strabismus and heterophoria). The book covers two core clinical topics. Prismatic Refraction, how light bends through optical prisms, and how clinicians can use prisms to measure, diagnose, and relieve eye strain (asthenopia), double vision (diplopia), and misaligned line of sight. Decentring Lenses is the second and its focusing on the mathematical and practical rules for shifting the optical center of a spectacle lens relative to the patient's pupil. By decentring a standard spherical or cylindrical lens, allowing an optometrist or ophthalmologist to create an intentional "prismatic effect" without needing to grind a separate, heavy prism into the glassflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, the clinical use of prisms, book, ernest f. maddox