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Cover test. A cover test or cover-uncover test is an objective determination of the presence and amount of ocular deviation. It is typically performed by orthoptists, ophthalmologists and optometrists during eye examinations . The two primary types of cover tests are: the alternating cover test. the unilateral cover test (or the cover-uncover ...
The Five Eyes ( FVEY) is an Anglosphere intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom, and the United States. [1] These countries are parties to the multilateral UK-USA Agreement, a treaty for joint cooperation in signals intelligence. [2] [3] [4] Informally, Five Eyes can refer to the group of intelligence ...
The Black Prism is a fantasy novel by American author Brent Weeks. It is the first entry in the five-volume [1] Lightbringer Series, and follows the 'Prism' Gavin Guile, the most powerful person in the world, [2] as he fights against an uprising by a self-proclaimed king. The book is described by the author as "a story of normal brothers—who ...
Deck prism. A deck prism, or bullseye, is a prism inserted into the deck of a ship to provide light down below. [1] [2] [3] For centuries, sailing ships used deck prisms to provide a safe source of natural sunlight to illuminate areas below decks. Before electricity, light below a vessel's deck was provided by candles, oil and kerosene lamps ...
Vision therapy is a subset of behavioral optometry. In general, vision therapists attempt to improve the vision, and therefore day-to-day well-being, of patients using "eye exercises," prism, and lenses, with more emphasis on the patient's visual function.
Prism adaptation is a sensory-motor adaptation that occurs after the visual field has been artificially shifted laterally or vertically. It was first introduced by Hermann von Helmholtz in late 19th-century Germany as supportive evidence for his perceptual learning theory (Helmholtz, 1909/1962). [1]
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