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!

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What is the primary function of the lacrimal gland?

To drain excess tears
To supply tears to the eye
To support the retina
To provide shape to the eye

The correct answer is: To supply tears to the eye

The primary function of the lacrimal gland is to supply tears to the eye. The lacrimal gland produces and secretes the aqueous layer of the tear film, which helps to keep the surface of the eye moist, provides lubrication, and protects against infection. This tear film is essential for maintaining the health of the cornea and facilitating clear vision. The tears provided by the lacrimal gland also contain necessary nutrients and antibodies that contribute to the overall health and function of the eye. While other options like draining excess tears or supporting the retina are related to eye health, they do not capture the primary role of the lacrimal gland itself, which is primarily concerned with tear production and secretion.