hemeralopia

[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.

Origin of hemeralopia

1700–10; < New Latin < Greek hēmeralōp- (stem of hēmerálōps having such a condition (hēmer(a) day +al(aós) blind + -ōps having such an appearance) + -ia -ia; cf. -opia

Also called day blindness.

Related formshem·er·a·lop·ic

[hem-er-uh-lop-ik] /ˌhɛm ər əˈlɒp ɪk/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hemeralopia

hemeralopia

noun

inability to see clearly in bright lightNontechnical name: day blindness Compare nyctalopia

Derived Formshemeralopic (ˌhɛmərəˈlɒpɪk), adjective

Word Origin for hemeralopia

C18: New Latin, from Greek hēmeralōps, from hēmera day + alaos blind + ōps eye

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

hemeralopia in Medicine

hemeralopia

[hĕm′ər-ə-lō′pē-ə]

n.

A visual defect marked by the inability to see as clearly in bright light as in dim light.day blindness