Ophthalmoscopist

(offthal-mos'- ko -pist). One versed in (of-thal-mos' -ko-pe). The examination of the interior of the eye by means of the ophthalmoscope. O., Direct, the method of the erect or upright image, the observer's eye and the ophthalmoscope being brought close to the eye of the patient. O., Indirect, the method of the inverted image; the observer's eye is placed about 16 inches from that of the patient and a 20 D. biconvex lens is held about two inches in front of the observed eye, thereby forming an aerial inverted image of the fundus. O., Medical, ophthalmoscopy as an aid to internal medicine in the diagnosis of such diseases as manifest themselves in changes in the fundus of the eye; such diseases are brain-lesions, giving rise to pre ure, Bright" s disease, syphilis, and leukemia. O., Metric, ophthalmoscopy for purposes of measuring refraction.