‖ hemiˈopia, hemiˈopsia Path.
Also (anglicized) hemiopy, -opsy.
[mod.L., f. hemi- + Gr. ὤψ, ὠπ- eye, ὄψις sight.]
= hemianopsia. So hemiˈopic a.
| 1811 Hooper Med. Dict., Hemiopsia, a defect of vision, in which the person sees the half, but not the whole of an object. 1831 Brewster Newton (1855) I. x. 230 The curious disease of hemiopsy, or amaurosis dimidiata, in which the patient sees with each eye only half of an object, being blind to the other half. 1838 Penny Cycl. XII. 114/2 Hemiopia. 1854 Mayne Expos. Lex., Hemiopia, Hemiopsia..hemiopy: hemiopsy. 1864–70 T. Holmes & Hulke Syst. Surg. (1883) II. viii. 77 Transient hemiopsia is often an initial symptom of megrim. 1873 Arch. Sci. & Pract. Med. I. 293 (title) Hemiopic and sector-like defects in the field of vision. 1890 W. James Princ. Psychol. I. ii. 42 A hemiopic disturbance of vision is one in which neither retina is affected in its totality, but in which, for example, the left portion of each retina is blind, so that the animal sees nothing situated in space towards its right. |