[DOC] [TLE] Vitamin A deficiency - Wikipedia [PAR] Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood 
and tissues. It is common in poorer countries but rarely seen in more developed 
countries. Nyctalopia (night blindness) is one of the first signs of VAD. 
Xerophthalmia, keratomalacia, and complete blindness can also occur since ... 
Collections of keratin in the conjunctiva, known as Bitot's spots, are also... [DOC] [TLE] Vitamin A Deficiency | Health | Patient [PAR] Sep 7, 2015 ... Vitamin A is sometimes also called retinol. Foods that contain vitamin A ... Mild 
forms of vitamin A deficiency may cause no symptoms. However, mild forms of ... 
Poor vision in the dark (night blindness). Thinning and ulceration... [DOC] [TLE] Retinol - Wikipedia [PAR] Retinol (Vitamin A1) is one of the animal forms of vitamin A. It is a diterpenoid and 
an alcohol. ... Retinal, also known as retinaldehyde, can be reversibly reduced to 
produce retinol or it can be irreversibly oxidized to ... One of the earliest signs of 
vitamin A deficiency is night-blindness followed by decreased visual acuity. [DOC] [TLE] Nightblindness and Xerophthalmia: Vitamin A Deficiency [PAR] Feb 28, 2013 ... Vitamin A Retinol Rhodopsin Eye Cornea ... Also known as dark dysadaptation, 
nyctanopia or nyctalopia, nightblindness is a lack of ability to see clearly in dim ... 
Nightblindness can be an early sign of vitamin A deficiency. [DOC] [TLE] Night Blindness - Healthline [PAR] Mar 10, 2016 ... Night blindness is also called nyctalopia. ... Although the term night blindness 
implies that you can't see at night, this isn't the... Read more. [DOC] [TLE] Eye Benefits of Vitamin A and Beta Carotene - All About Vision [PAR] Can a vitamin A deficiency cause blindness? Dr. Heiting gives the facts about ... 
Vitamin A from animal-derived foods is called retinol. This "pre-formed" vitamin A
... [DOC] [TLE] night blindness facts, information, pictures | Encyclopedia.com ... [PAR] Night blindness, also called nyctalopia, is a symptom of several different 
diseases or conditions. ... Rods contain the photopigments retinal and rhodopsin, 
whereas cones ... Because night blindness can be caused by a vitamin A 
deficiency,... [DOC] [TLE] Vitamin A deficiency | definition of vitamin A deficiency by Medical ... [PAR] Night blindness is the first symptom of vitamin A deficiency. ... Water-soluble 
vitamins can be dissolved in water or juice. ... A deficiency of vitamin A (also 
called retinol) leads to interference with growth, atrophy of epithelial tissues 
resulting in... [DOC] [TLE] Vitamin A Deficiency: Background, Pathophysiology, Epidemiology [PAR] Early observations by ancient Egyptians recognized that night blindness could be 
... Retinol, also known as preformed vitamin A, is the most active form and is... [DOC] [TLE] Vitamin A (Retinol) | University of Maryland Medical Center [PAR] The first sign of a vitamin A deficiency is often poor sight at night. ... One group, 
called retinoids, comes from animal sources and includes retinol. ... Dry eyes; 
Night blindness; Diarrhea; Skin problems ... The body can also make vitamin A 
from beta-carotene and other carotenoids, which are fat-soluble nutrients found 
in fruits... [DOC] [TLE] Vitamin A: Benefits, Sources & Side Effects - Dr. Axe [PAR] Active Vitamin A comes from animal-derived foods and is called retinol. ... Early 
symptoms of Keratomalacia may include night blindness and extreme dryness of 
the ... The study also found that vitamin A deficiency in children increased their... [DOC] [TLE] Vitamin A: MedlinePlus Medical Encyclopedia [PAR] Feb 2, 2015 ... It is also known as retinol because it produces the pigments in the ... Food 
sources of carotenoids such as beta-carotene may reduce the risk ... Vitamin A 
comes from animal sources, such as eggs, meat, fortified ... These include 
reversible night blindness and then non-reversible corneal damage known as... [DOC] [TLE] vitamin A deficiency | pathology | Britannica.com [PAR] Aug 1, 2016 ... Nutritional disorder caused by a deficiency of vitamin A (also called ... from retinol
, and 11-cis retinaldehyde is an essential form of

Question: Night blindness may come from a deficiency in this vitamin, also called retinol
Answer: Vitamin A