Certified Paraoptometric (CPO) Practice Exam

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What is the clear, cellophane-like tissue that lines the inside surface of the eyelids?

Bulbar conjunctiva

Palpebral conjunctiva

The clear, cellophane-like tissue that lines the inside surface of the eyelids is known as the palpebral conjunctiva. This tissue is a part of the conjunctiva, which also includes the bulbar conjunctiva that covers the white part of the eyeball. The palpebral conjunctiva plays a crucial role in protecting the eye and maintaining moisture by allowing tears to spread across the surface of the eye and providing a barrier against pathogens and foreign materials.

In contrast, the bulbar conjunctiva does not line the eyelids; instead, it adheres to the sclera. The choroid is a layer of blood vessels and connective tissue between the retina and the sclera, and the vitreous humor is the gel-like substance filling the space between the lens and the retina. Therefore, identifying the palpebral conjunctiva as the correct answer highlights its specific anatomical function and location.

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Choroid

Vitreous humor

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