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• Major controllable nutritional problem.• 13.8 million children have some degreeof visual loss.• Approximately 250,000 to...
• Decreased dietary intake.• Impaired absorption.• Altered storage.• Increased utilization.• Chronic diarrhoea, malabsorpt...
• Night blindness.• Keratomalacia.• Conjunctival dryness, cornealdryness, xerophthalmia.• Bitot’s spots.• Corneal perforat...
• Earliest symptom.• Eyes cannot adjustto dim light.• Individual findsdifficult todistinguish imagesin low levels ofillumi...
• Softening of cornea.• Seen in earlychildhood due tovitamin A deficiency.• Subsequently leadsto corneal ulcerationand per...
• Conjunctivaldryness owing tovitamin Adeficiency.• Follows chronicconjunctivitis andvitamin A deficiencydiseases.• Eyes f...
• Triangular or ovalfoamy, greyish spotsappearing on thecornea due to thedeficiency of vitamin A.
• An anomaly in thecornea due to adamage in the cornealsurface.
• Treatment for subclinicalvitamin A deficiencyincludes the consumptionof vitamin A-rich foods.• For clinically evidentvit...
Eating at least 5 servings offruits and vegetables perday is recommended inorder to provide acomprehensivedistribution ofc...
Vitamin A deficiency and its impact on vision
Vitamin A deficiency and its impact on vision
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Vitamin A deficiency and its impact on vision

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Vitamin A deficiency and its impact on vision

  1. 1. • Major controllable nutritional problem.• 13.8 million children have some degreeof visual loss.• Approximately 250,000 to 500,000children go blind each year – Half diewithin a year.
  2. 2. • Decreased dietary intake.• Impaired absorption.• Altered storage.• Increased utilization.• Chronic diarrhoea, malabsorption.
  3. 3. • Night blindness.• Keratomalacia.• Conjunctival dryness, cornealdryness, xerophthalmia.• Bitot’s spots.• Corneal perforation.• Blindness due to structuraldamage to the retina.
  4. 4. • Earliest symptom.• Eyes cannot adjustto dim light.• Individual findsdifficult todistinguish imagesin low levels ofillumination.
  5. 5. • Softening of cornea.• Seen in earlychildhood due tovitamin A deficiency.• Subsequently leadsto corneal ulcerationand perforation.
  6. 6. • Conjunctivaldryness owing tovitamin Adeficiency.• Follows chronicconjunctivitis andvitamin A deficiencydiseases.• Eyes fail to producetears in thiscondition.
  7. 7. • Triangular or ovalfoamy, greyish spotsappearing on thecornea due to thedeficiency of vitamin A.
  8. 8. • An anomaly in thecornea due to adamage in the cornealsurface.
  9. 9. • Treatment for subclinicalvitamin A deficiencyincludes the consumptionof vitamin A-rich foods.• For clinically evidentvitamin A deficiency,treatment includes dailyoral vitamin Asupplements.
  10. 10. Eating at least 5 servings offruits and vegetables perday is recommended inorder to provide acomprehensivedistribution ofcarotenoids.A variety of foods, such asbreakfast cereals,pastries, breads, etc., areoften fortified withvitamin A.

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