Certified Paraoptometric (CPO) Practice Exam 2025

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Prepare for the Certified Paraoptometric Exam with our comprehensive quiz featuring multiple-choice questions. Each question is accompanied by hints and explanations, helping you build your knowledge and confidence. Get ready to excel in your career!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the main purpose of the conjunctiva?

To protect the lens from damage
To allow light entry into the eye
To keep the surface of the eye moist and protected
To facilitate the movement of the eyeball

The correct answer is: To keep the surface of the eye moist and protected

The main purpose of the conjunctiva is to keep the surface of the eye moist and protected. This thin, transparent membrane covers the inner surface of the eyelids and the white part of the eyeball, helping to maintain moisture through the secretion of mucus and tears. It also serves as a barrier to protect the eye from pathogens and foreign bodies, contributing to overall ocular health. The conjunctiva plays a crucial role in the immune defense of the eye, helping to prevent infections while ensuring that the eye remains lubricated, thus supporting clear vision and comfort.