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Strabismus is an eye disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [ 3 ] The condition may be present occasionally or constantly. [ 3 ]
A Turkish nazar boncuğu Eye beads or nazars – amulets against the evil eye – for sale in a shop.. An eye bead or naẓar (from Arabic نَظَر , meaning 'sight', 'surveillance', 'attention', and other related concepts) is an eye-shaped amulet believed by many to protect against the evil eye.
AAW An acronym for anti-aircraft warfare. aback (of a sail) Filled by the wind on the opposite side to the one normally used to move the vessel forward.On a square-rigged ship, any of the square sails can be braced round to be aback, the purpose of which may be to reduce speed (such as when a ship-of-the-line is keeping station with others), to heave to, or to assist moving the ship's head ...
Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions: VA OS Left visual acuity VA OD Right visual acuity VDU Visual display unit VF Visual field VPS Variable prism stereoscope WD
Entoptic images have a physical basis in the image cast upon the retina. Hence, they are different from optical illusions , which are caused by the visual system and characterized by a visual percept that (loosely said) appears to differ from reality .
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Turning a blind eye is an idiom describing the ignoring of undesirable information. The Oxford English Dictionary records usage of the phrase in 1698. [1]The phrase to turn a blind eye is often associated with Vice Admiral Horatio Nelson at the Battle of Copenhagen in 1801.
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