Nutritional hemeralopia is a visual impairment characterized by decreased visual acuity at dusk and at night. The cause of the disease is a deficiency of vitamin A in the body due to poor nutrition.
Symptoms of the disease:
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Decreased visual acuity in the dark, especially in low light. During the day, vision does not suffer.
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Dryness and burning in the eyes.
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Increased sensitivity to bright light.
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Sensation of a “veil” before the eyes at dusk.
Causes of vitamin A deficiency:
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Insufficient consumption of foods containing vitamin A - liver, carrots, dark green leafy vegetables, butter, eggs.
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Impaired absorption of vitamin A in the intestine in gastrointestinal diseases.
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Increased need for the vitamin during intensive growth, pregnancy, and breastfeeding.
Treatment consists of prescribing medications containing vitamin A and adjusting the diet. The prognosis with timely treatment is favorable.