What do glasses do to they eye?
It is common experience that wearing contacts and glasses worsens unaided sight. Glass and plastic lenses in spectacles and contact lenses interfere with the transmission of light. Color is always more intense when seem with the naked eye than with any lens. It can be argued that since color is a major part of the perception of form it follows that in small to medium sight defects form is not as well perceived with glasses. Secondly its possible that glasses actually agravate the eye, by constantly maintaining a degree of refractive error which otherwise would not be there, particularly while in eccentric focusing. The strong concave glasses required by myopes of high degree make all objects seem much smaller than they really are, while convex glasses enlarge them. Patients with a degree of astigamitism can suffer some very disagreable sensations when they put on glasses. Usually these difficulties are overcome, but often they are not, and it sometimes happens that those who do overcom
