The =optic disc= is the end of the optic nerve as it comes into the eye; it is circular in shape, pink in color, and sharply defined. It is about 1-16th of an inch in diameter; about 15° to the nasal side of the pole of the eye and slightly above the horizontal. There may be a dark =choroidal ring= around the disc or part way around. There may also be a white ring caused by the sclera. As a rule there is a depression in the center of the disc out of which the retinal vessels emerge and spread out over the fundus. The =fovea centralis= or point of clearest vision is located two and a half disc diameters to the temporal side of the disc. Around this is a circular area of light yellow, the =macula lutea=. The subject of ophthalmoscopy has been touched upon somewhat in detail because of its great importance to the general practitioner. Every osteopathic physician should know the ophthalmoscope well enough to recognize the ordinary lesions inside the eye. When we take up pathological conditions of the eye we will have occasion frequently to refer to the ophthalmoscopic appearance. Without the use of this instrument all of our clinical field research on internal diseases of the eye is valueless. Many have told me they have cured cataract with osteopathic treatment, some say they have cured specific neuroretinitis with no sequelæ, others testify to opacities and blindness from various causes. Invariably we ask if they used the ophthalmoscope in their diagnosis and with it watched the progress of the case. Almost invariably the answer is “no, it looked like it,” “the symptoms indicated it,” or “Dr. so and so, an oculist diagnosed it as such.” Fellow Osteopaths! we can not base our claims on this kind of data. With a little study and practice the ophthalmoscope can be mastered. Not till then can we get reliable statistics on internal diseases of the eye in our case reports. Osteopathy has much to reveal to us in this field and for the sake of the science and our patients we appeal to every one to do the work here set forth. Diseases of the Eye OSTEOPATHIC MANIPULATION FOR EYE DISEASES A general correction of lesions should be made in order to give perfect alignment and equilibrium. Lesions that affect the nerve and blood supply will be found from the fourth thoracic to the occiput; more often at the occiput, atlas and axis in the cervical region and the second and third thoracic in the dorsal region including the ribs. Correction of these lesions must have specific attention in every case of eye disease that shows any tendency to chronicity or in repeated eye disease and exacerbations. A thorough upper spinal treatment to insure good mobility of all joints and establish freedom of fluids and forces is recommended.