Visual optics

Historical Significance: This book covers an outline of the eye and vision, visual acuity, refractive errors, accommodation and convergence, ophthalmoscopy, retinoscopy, keratometry, 5 chapters on binocular vision and two last chapters one on the schematic eye and the other on aberrations of the eye. There are good illustrations of ophthalmic instruments of the day including Stevens phorometer and the Bausch and Lomb keratometer. Emsley was Head of the Applied Optics Department in the Northhampton Polytechnic in London within which an optometry course was taught, although the Polytechnic has now become City University and the Department is the Department of Optometry and Visual Science. This a classic optometry student text, widely used until the 1960s. The first edition was published in 1936. Emsley held a BSc degree so the book tends to be quantitative although there is no hard mathsEditions held in this museum are: 1st 1936 Cat No 1083, 2nd 1939 Cat No 564, 3rd 1944 Cat No 1944, 4th 1950 Cat No 100,5th 1955 Cat No 566