Certified Ophthalmic Assistant Practice Exam 2025 – All-in-One Guide to Exam Success!

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Question: 1 / 400

What is the primary function of tear film?

To refract light

To protect against UV rays

To hydrate and protect the ocular surface

The primary function of the tear film is to hydrate and protect the ocular surface. Tears play a crucial role in maintaining the health of the eyes by providing lubrication, washing away debris, and preventing infections. Options A, B, and D are not correct because tear film does not primarily refract light, protect against UV rays, or detect color.

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To detect color

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