The Refraction and Accommodation of the Eye

The apparent simplicity of the adaption of lenses to imperfect vision is seen in the fact that the public consider watchmakers competent to help them in a selection of spectacles, or else they seek the aid of an ophthalmic optician, who, ignorant alike of physical optics and the physiology of the eye, advertises his ability to " suit all sights." Undoubtedly the most important agent in the whole range of ocular therapeutics is the application of spectacles. The majority of patients who come for advice about their eyes require them, and without their aid many of the surgical procedures?such as strabismus operation?are sadly incom-