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07:29
Deep Vascular Imaging in the Eye with Flow-Enhanced Ultrasound
Published on: October 4, 2021
The eye and nutrition
1Department of Ophthalmology, Nagasaki University School of Medicine, Nagasaki, Japan.
Japanese Journal of Ophthalmology
|July 29, 2000
Summary
Essential vitamins and trace elements like zinc, copper, and vitamins A, C, and E are crucial for maintaining ocular tissue health, preventing cell degeneration, and supporting vision.
Area of Science:
- Ophthalmology and Nutritional Science
- Cell Biology and Histology
Background:
- Ocular tissues require specific nutrients for proper function and structure.
- Deficiencies in essential vitamins and trace elements can lead to various ocular pathologies.
Purpose of the Study:
- To investigate the impact of deficiencies and excesses of specific vitamins and trace elements on ocular tissues.
- To elucidate the roles of these micronutrients in maintaining the integrity of the conjunctiva, cornea, retina, and optic nerve.
Main Methods:
- Rats and mice were subjected to diets deficient in trace elements (Zn, Cu, Mn, Se, Mg, Cr) or vitamins (A, B12, C, E).
- Excessive amounts of aluminum (Al) and vitamin A were administered to some animals.
- Ocular tissues were analyzed using light and electron microscopy, X-ray analysis, and histochemical techniques.
Main Results:
- Deficiencies in Zn, Cu, Mn, and vitamins A, C, E led to conjunctival cell loss and reduced corneal microvilli.
- Photoreceptor and retinal cells degenerated with deficiencies in Zn, Cu, Mn, A, E, and B12.
- Excess vitamin A and Al caused retinal toxicity, including photoreceptor cell loss.
Conclusions:
- Vitamins (A, B12, C, E) and trace elements (Cu, Zn, Mn, Se, Mg, Cr) are vital for ocular cellular structure and metabolism.
- These nutrients play key roles in cell differentiation, development, and maintenance, and possess antioxidant properties.
- Maintaining adequate levels of these micronutrients is essential for preventing ocular tissue damage and disease.
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