COA Certified Ophthalmic Assistant Practice Questions - JCAHPO Certified Ophthalmic Assistant (COA) Certification Exam

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When measuring visual acuity using a Snellen chart, the patient can read the 20/40 line with the right eye. What does this result indicate?

The patient sees at 40 feet what a normal eye sees at 20 feet The patient sees at 20 feet what a normal eye sees at 40 feet The patient has 40% of normal vision The patient needs a +4.00 diopter correction

Correct Answer:

The patient sees at 20 feet what a normal eye sees at 40 feet

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