Certified Paraoptometric (CPO) Practice Exam 2025

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

1. Palpebral conjunctiva

2. Ciliary body

3. Cornea

4. Iris

The correct answer is: Palpebral conjunctiva

The correct answer is the palpebral conjunctiva, which is the clear, cellophane-like tissue that lines the inner surface of the eyelids. This tissue plays a crucial role in protecting the eye and maintaining moisture by secreting mucus and tears, helping to keep the surface of the eye smooth and lubricated. The ciliary body is a structure located behind the iris that is responsible for controlling the shape of the lens and producing aqueous humor, contributing to the eye's fluid balance but does not line the eyelids. The cornea is the transparent front part of the eye that covers the iris and pupil and is essential for focusing light but is not found within the eyelids. The iris, which gives color to the eye, regulates light entering the eye but is not related to the lining of the eyelids. Hence, the palpebral conjunctiva is specifically identified as the lining tissue that meets these criteria.