نتایج جستجو برای: night blindness

تعداد نتایج: 48292  

Journal: :British Journal of Ophthalmology 1942

2016
W. J. Buchanan

The readers of this Gazette ma}7 remember that attention was called in June to the extract made by Major F. P. Maynard, I.M.S., in our Current Literature Columns (June, p. 234) on the treatment of cases of night-blindness by ingestion of liver. The case in favour of the liver treatment seemed so clear that I determined to try it on the first opportunity, and the following cases are here publish...

2014
Ali Daryanavard Ebrahim Khajeh Mahmoud Hosseinpour Habib Dadvand Ali Azarpeykan

BACKGROUND Night blindness is a visual disorder associated with unusual vision during the night or in darkness. Vitamin A deficiency (VAD), which is easily preventable, is the main known etiology of night blindness. Malnutrition is a common health issue in Bashagard and some other areas in the Hormozgan province of Iran. The aim of the current study was to determine the prevalence of night blin...

2002

N ight blindness—the inability to see after dusk or at night—is the most common ocular manifestation of moderate to severe vitamin A deficiency. Poor dark adaptation leading to night blindness occurs when there is decreased production of a vitamin A–dependent photosensitive pigment, rhodopsin, in the retinal receptors responsible for seeing under low levels of illumination (rods). Normally, whe...

2016
W. J. Moore

are at times quickly affected with night blindness, and the face becomes hideously swollen." By the same authority it is also stated, " that fish and meat become more rapidly putrid, if exposed to the rays of the moon." Dr. Peet mentions having noticed similar rapid putrescence of fish. The statement of "an intelligent Commander," of the now defunct Indian Navy, is also quoted to the effect tha...

Journal: :Nature Reviews Genetics 2000

Journal: :The Journal of Nervous and Mental Disease 1919

2016
Hari Charan Gupta

Sir,?Though it is a rare disease in Europe, nyctalopia is not so uncommon in the tropics. There are two varieties of night-blindness?one symptomatic and the other idiopathic. The etiology of the disease is very obscure, and much more varied and uncertain is its treatment too. Dr. Tweedy says that " the prognosis of the symptomatic night-blindness is generally unfavourable ; while that of the id...

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