Artificial intelligent assistant

occluder

occluder Ophthalm.
  (əˈkluːdə(r))
  [f. occlude v. + -er1.]
  Any device designed to occlude an eye.

1930 Brit. Jrnl. Ophthalm. XIV. 520 Many varieties of occluder..have been devised. 1949 S. Duke-Elder Text-bk. Ophthalm. IV. xlv. 3917 For older children who can be trusted not to peep round it, a simple occluder of metal..or rubber..may be attached to the spectacles... These should be replaced by strapping on a tie-on occluder during the night. 1974 Nature 11 Oct. 506/2 One eye was centred on a projection perimeter (the other eye was always covered with a plasticine occluder).

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC 06291ab06614d63ea6954051dd4dbaf6