Path. [f. Gr. τεῖχος wall + ὄψις sight + -IA1.] Temporary blindness sometimes accompanying ophthalmic headache.
1870. Hubert Airy, Phil. Trans., CLX. 259. I think this similitude may furnish me with the word I seek, and I venture to propose the name ‘Teichopsia’ (τεῖχος, town-wall, ὄψις, vision) to represent the bastioned form of transient Hemiopsia which I have been describing, not without a reminiscence of some words of TENNYSON’S:
| ‘……. as yonder walls | |
| Rose slowly to a music slowly breathed, | |
| A cloud that gathered shape.” |
1872. Nature, 21 March, 416/1. On Teichopsia, a form of transient half-blindness.
1899. Allbutt’s Syst. Med., VIII. 223. The so-called Teichopsia, the appearance as of ebullition in objects, and other curious optical illusions, are familiar precursors of migraine.
