Physiology of Refractive Media in the Eye

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What percentage of glucose is metabolized anaerobically by the glycolytic pathway in the lens?

80%

What is the primary function of the sorbitol pathway in the lens?

Role in diabetic cataract

What is the respiratory quotient of the lens?

1

What is the term for the conversion of light energy into a nerve impulse in the visual process?

<p>Phototransduction</p> Signup and view all the answers

Which enzyme is NOT involved in the preventive antioxidant mechanism of the lens?

<p>Lactase</p> Signup and view all the answers

What is the number of ganglion cells in each eye?

<p>1.5 million</p> Signup and view all the answers

What is the main reason for corneal transparency?

<p>Peculiar arrangement of corneal lamellae</p> Signup and view all the answers

What is the source of oxygen for the cornea?

<p>Air through tear film</p> Signup and view all the answers

What is the respiratory quotient of the cornea?

<p>1</p> Signup and view all the answers

What helps maintain lens transparency?

<p>All of the above</p> Signup and view all the answers

What is the function of aquaporin-0 in the lens?

<p>Maintenance of lens transparency</p> Signup and view all the answers

Which layer of the cornea is metabolically more active?

<p>Epithelium</p> Signup and view all the answers

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