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Excerpt from The Canadian Nurse, Vol. 57: March, 1961 Vision IS the most important of our senses. We see with our eyes. The eyeball is an outgrowth of the brain and is connected to it by means of the optic nerve. The eye is the window through which the brain sees the world. It has been said that the eye mirrors the workings of the brain. Actually we see part of the brain when we look into the eye at the Optic nerve. The eye is often likened to a ca mera. In fact, it is far superior to it. It has its own automatic light shutter (the eyelids); its own variable light regulating aperture (the pupil); its own instantaneous focusing apparatus (the cornea, lens and ciliary body); its own permanent multicolored self developing film (the retina), and its own smoothly acting mechanism for sighting in all directions (the four rectus and two oblique muscles). Fur ther, and more important still, through the connection with the brain (optic nerve), the pictures are interpreted. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.