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Ophthalmology Lectures: Cornea Module

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Questions and Answers

What is the refractive index of the cornea?

1.38

1.33

1.369 (correct)

1.40

What is the diameter of the posterior surface of the cornea?

7.8 mm

10.6 mm

11.7 mm (correct)

6.5 mm

What is the main function of the endothelium in the cornea?

To maintain transparency of the cornea through active pump mechanism (correct)

To regulate the amount of light entering the eye

To provide nutrition to the cornea

To provide structural support to the cornea

What is the percentage of the total eye refractive power contributed by the cornea?

2/3 Signup and view all the answers

What is the name of the layer of collagen fibrils in the cornea?

Substantia propria Signup and view all the answers

Which nerve is responsible for the innervation of the cornea?

Ophthalmic division of the trigeminal nerve Signup and view all the answers

What is the primary function of the cornea in the eye?

To serve as the main refractive medium Signup and view all the answers

What is the source of nutrition for the avascular cornea?

Diffusion from tears, aqueous humor, and limbal capillaries Signup and view all the answers

What type of nerve endings are found in the cornea?

Free pain nerve endings Signup and view all the answers

What is the location of the Schwalbe line?

At the end of Descemet's membrane Signup and view all the answers

What is the characteristic of the corneal stroma?

Elastic and acellular Signup and view all the answers