Night Blindness is caused by a deficiency of which of the following Vitamin?a)Vitamin Bb)Vitamin Cc)Vitamin Kd)Vitamin ACorrect answer is option 'D'. Can you explain this answer?

Question

Answer

It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, vitamin A deficiency).✓... The most common cause of nyctalopia is retinitis pigmentosa, a disorder in which the rod cells in the retina gradually lose their ability to respond to the light.

Answer

D

Answer

Night Blindness results in loss of vision in the dark and is caused by the deficiency of Vitamin A

Answer

Understanding Night Blindness
Night blindness, also known as nyctalopia, is a condition characterized by difficulty seeing in low light or darkness. One of the primary causes of night blindness is a deficiency in Vitamin A.
Role of Vitamin A
- Visual Function: Vitamin A is crucial for the production of rhodopsin, a pigment found in the retina that is necessary for low-light vision.
- Retinal Health: It helps maintain the health of the retina and supports the overall functioning of the eye.
Consequences of Vitamin A Deficiency
- Impaired Night Vision: Without adequate Vitamin A, the body struggles to adapt to changes in light, leading to difficulties seeing at night or in dimly lit environments.
- Other Symptoms: Vitamin A deficiency can lead to dry eyes, corneal ulcers, and in severe cases, complete blindness.
Sources of Vitamin A
- Dietary Sources: Vitamin A can be obtained from animal products like liver, fish, and dairy, as well as from plant sources in the form of beta-carotene, found in carrots, sweet potatoes, and leafy greens.
- Recommended Intake: Ensuring a balanced diet rich in Vitamin A is essential for maintaining good vision and overall eye health.
Conclusion
In summary, night blindness is primarily caused by a deficiency of Vitamin A. Incorporating sufficient amounts of this vitamin into your diet is critical for preventing vision problems, especially in low-light conditions.

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