Artificial intelligent assistant

amaurosis

amaurosis Med.
  (æmɔːˈrəʊsɪs)
  [mod.L., a. Gr. ἀµαύρωσις, n. of action f. ἀµαυρό-ειν to darken, f. ἀµαυρ-ός dark, dim.]
  Partial or total loss of sight arising from disease of the optic nerve, usually without external change in the eye.

1657 Phys. Dict., Amaurosis, gutta serena, a disease in the eyes, viz. when the sight is gone, and no fault to be seen. 1704 Lond. Gaz. mmmmlix/4 Forerunner of an Amaurosis or Gutta Serena. 1843 Carlyle Past & Pr. (1858) 81 Thick serene opacity, thicker than amaurosis. 1876 Athenæum 16 Dec. 806/3 An attack of amaurosis had suspended his labours.

Oxford English Dictionary

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