Certified Ophthalmic Assistant Practice Exam

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Study for the Certified Ophthalmic Assistant Exam. Access multiple choice questions that reflect actual exam content and receive hints and explanations for each question. Prepare effectively and embark on your path to certification!

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 one function of the tear film in the eye?

Amplifying light transmission
Hydrating and protecting the ocular surface
Increasing intraocular pressure
Enhancing the corneal reflex

The correct answer is: Hydrating and protecting the ocular surface

The correct answer is indeed focused on the role of the tear film in hydrating and protecting the ocular surface. The tear film consists of a complex mixture of water, oils, and mucins that not only keeps the surface of the eye moisturized but also helps shield it from environmental irritants, infections, and physical damage. Additionally, the tear film aids in maintaining a smooth refractive surface, which is essential for clear vision. Its composition is crucial for the overall health of the corneal epithelial cells and provides nutrients that support these cells. By keeping the ocular surface hydrated and providing protection, the tear film plays a vital role in ensuring proper eye function and comfort.