Literally meaning: “dark by vessels"
Origin: Anc Greek
αγγείο/angio (=vessel, receptacle) > άγγος/aggos(=tube)
+σκότος/scotos(=darkness) > σκιά/scia(shadow)
Von Helmholtz in 1924 discovered that the retinal blood vessels give rise to scotomas in the visual fields. In 1926 later Evans coined the word “angioscotomas” in order to refer to the visual defects resulting from retinal blood vessels.
1. Evans JN (1926) Angioscotometry. Am J Ophthalmol 9:489–506.
2. Evans JN (1938) An introduction to clinical scotometry. New Have
Angioscotoma is an ocular disease caused by the shadow of blood vessels in the retina of the eye.