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day blindnesses

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hem⋅er⋅a⋅lo⋅pi⋅a

  [hem-er-uh-loh-pee-uh]
–noun Ophthalmology.
a condition of the eyes in which sight is normal in the night or in a dim light but is abnormally poor or wholly absent in the day or in a bright light.
Also called day blindness.

Origin:
1700–10; < NL < Gk hēmeralōp- (s. of hēmerálōps having such a condition (hēmer(a) day +al(aós) blind + -ōps having such an appearance) + -ia -ia; cf. -opia

Related forms:
hem⋅er⋅a⋅lop⋅ic  [hem-er-uh-lop-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: hem·er·a·lo·pia
Pronunciation: "hem-&-r&-'lO-pE-&
Function: noun
1 : a defect of visioncharacterized by reduced visual capacity in bright lights
2 : NIGHT BLINDNESS —not consideredgood medical usage in this sense
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

day blindness n.
See hemeralopia.

hemeralopia hem·er·a·lo·pi·a (hěm'ər-ə-lō'pē-ə)
n.
A visual defect marked by the inability to see as clearly in bright light as in dim light. Also called day blindness.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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