10 free, exam-style Certified Protection Officer (CPO) practice questions with answers and explanations. No signup required. Work through them below, then take the full free CPO practice test to study every exam domain.
A patient cannot identify the largest letter on the Snellen chart from any distance. The technician determines the patient can correctly count fingers held up at 3 feet. How should this visual acuity be recorded?
Correct answer: B - Counting fingers at 3 feet
A patient's uncorrected visual acuity is 20/80. When measured through a pinhole occluder, acuity improves to 20/25. This finding MOST likely indicates:
Correct answer: A - An uncorrected refractive error
While performing the swinging flashlight test, the technician swings the light from the right eye to the left eye and observes that the left pupil dilates rather than constricts. This finding indicates:
Correct answer: D - A left relative afferent pupillary defect
A patient who is extremely anxious about anything touching their eye needs intraocular pressure measured, and no topical anesthetic has been instilled. Which method is MOST appropriate?
Correct answer: B - Non-contact (air-puff) tonometry
Which diagnostic test specifically measures the thickness of the cornea?
Correct answer: C - Pachymetry
A patient using a hydrogen peroxide-based contact lens care system asks why they cannot insert their lenses right after placing them in the solution. The technician should explain that:
Correct answer: A - The peroxide must fully neutralize before insertion
The parent of a 7-year-old who plays youth soccer asks which lens material is best for everyday eyewear. Considering impact resistance and safety, the MOST appropriate recommendation is:
Correct answer: D - Polycarbonate
A patient calls the office stating that a household cleaning chemical splashed into their eye a few minutes ago and it is burning. The paraoptometric's MOST appropriate response is to:
Correct answer: C - Tell the patient to immediately flush the eye with water and come in now
A patient presents with a firm, painless nodule in the mid-portion of the upper eyelid that has slowly enlarged over several weeks. This MOST likely describes a:
Correct answer: B - Chalazion
Before a pediatric refraction, the optometrist orders drops that will both dilate the pupil AND temporarily paralyze the eye's ability to focus (accommodation). This class of medication is a:
Correct answer: D - Cycloplegic
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