day blindnessn.

Brit.

/ˈdeɪ ˌblʌɪn(d)nᵻs/, U.S.

/ˈdeɪ ˌblaɪn(d)nᵻs/

Forms: see day n. and blindness n.

Origin: Formed within English, by compounding; modelled on a Greek lexical item. Etymons: day n., blindness n.

Etymology: < day n. + blindness n., after Hellenistic Greek ἡμεράλωψ (adjective) blind in the daytime (Galen: see hemeralopia n.). Compare later night-blindness n.

Medicine and Biology.

The condition in which vision is impaired in daylight or bright light, and improved in dim light. Cf. hemeralopia n. and night-blindness n.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [noun] > other visual disorders

day blindness?1587

metamorphopsia1807

night vision1838

meropia1846

micropsy1857

micropsia1869

megalopsia1884

double vision1889

macropsia1890

aniseikonia1934

lazy eye1960

?1587 A. H. tr. J. Guillemeau Worthy Treat. Eyes (new ed.) ii. xi. sig. D5 (heading) Of day-blindnesse [Fr. aueuglement de jour], or catts eies, called in greeke hemeralopia, in latin nocturna visio.

1733 B. Duddell App. Treat. Horney-coat of Eye iii. 78 He cou'd not bear a great Light, like those who have that Disease call'd Hemeralopia, or Day Blindness, in which Disease their Pupils always contract pretty close, and their Eye-lids shut to the Light.

1829 S. Cooper Good's Study Med. (ed. 3) IV. 201 It [sc. hemeralopia] is the luscitas of Beer; the day-blindness of various other writers.

1829 S. Cooper Good's Study Med. (ed. 3) IV. 245 The principal examples of it [sc. intermittent amaurosis] are comprised in the subjects of day-blindness and night-blindness.

1838 Penny Cycl. XII. 114/2 Nyctalopia, night-vision, or day-blindness, probably never occurs as a separate disease.

1892 Proc. Royal Soc. 51 335 There is a group of cases of colour-blindness always associated with defective acuteness of vision, the peculiarity of which is that the affected persons see best by dull light, and cannot see nearly so well in bright light—‘day-blindness with colour-blindness’.

1934 Postgraduate Med. Jrnl. 10 349 Congenital day blindness has been supposed to be due to absence of the cones, but a better explanation is that the mechanism of light adaptation is defective probably from defective development of the rod and cone apparatus.

1993 Quondam et Futurus Winter 38 In the case of the good knight Cleir de Voie..it is the day-blindness of the owl that provides the joke.

2010 Genomics 95 101 (title) A mutation in gene CNGA3 is associated with day blindness in sheep.

This entry has been updated (OED Third Edition, September 2014; most recently modified version published online March 2022).

单词	day blindness
释义	day blindnessn. Brit. /ˈdeɪ ˌblʌɪn(d)nᵻs/, U.S. /ˈdeɪ ˌblaɪn(d)nᵻs/ Forms: see day n. and blindness n. Origin: Formed within English, by compounding; modelled on a Greek lexical item. Etymons: day n., blindness n. Etymology: < day n. + blindness n., after Hellenistic Greek ἡμεράλωψ (adjective) blind in the daytime (Galen: see hemeralopia n.). Compare later night-blindness n. Medicine and Biology. The condition in which vision is impaired in daylight or bright light, and improved in dim light. Cf. hemeralopia n. and night-blindness n. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [noun] > other visual disorders day blindness?1587 metamorphopsia1807 night vision1838 meropia1846 micropsy1857 micropsia1869 megalopsia1884 double vision1889 macropsia1890 aniseikonia1934 lazy eye1960 ?1587 A. H. tr. J. Guillemeau Worthy Treat. Eyes (new ed.) ii. xi. sig. D5 (heading) Of day-blindnesse [Fr. aueuglement de jour], or catts eies, called in greeke hemeralopia, in latin nocturna visio. 1733 B. Duddell App. Treat. Horney-coat of Eye iii. 78 He cou'd not bear a great Light, like those who have that Disease call'd Hemeralopia, or Day Blindness, in which Disease their Pupils always contract pretty close, and their Eye-lids shut to the Light. 1829 S. Cooper Good's Study Med. (ed. 3) IV. 201 It [sc. hemeralopia] is the luscitas of Beer; the day-blindness of various other writers. 1829 S. Cooper Good's Study Med. (ed. 3) IV. 245 The principal examples of it [sc. intermittent amaurosis] are comprised in the subjects of day-blindness and night-blindness. 1838 Penny Cycl. XII. 114/2 Nyctalopia, night-vision, or day-blindness, probably never occurs as a separate disease. 1892 Proc. Royal Soc. 51 335 There is a group of cases of colour-blindness always associated with defective acuteness of vision, the peculiarity of which is that the affected persons see best by dull light, and cannot see nearly so well in bright light—‘day-blindness with colour-blindness’. 1934 Postgraduate Med. Jrnl. 10 349 Congenital day blindness has been supposed to be due to absence of the cones, but a better explanation is that the mechanism of light adaptation is defective probably from defective development of the rod and cone apparatus. 1993 Quondam et Futurus Winter 38 In the case of the good knight Cleir de Voie..it is the day-blindness of the owl that provides the joke. 2010 Genomics 95 101 (title) A mutation in gene CNGA3 is associated with day blindness in sheep. This entry has been updated (OED Third Edition, September 2014; most recently modified version published online March 2022). < n.?1587
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