Certified Paraoptometric (CPO) - Unit III - Clinical Principles and Procedures
Visual Acuity (VA) Correct Answer: The meausure of the finest detail the eye can detect. Typically described as a Snellen fraction. Snellen Letters Correct Answer: Letters most often used to measure acuity at distance. Snellen Fraction (20/20) Correct Answer: = Testing Distance / Distance at which letter is standardized to be read Snellen numerator Correct Answer: Testing distance (usually 20 feet) Snellen denominator Correct Answer: Distance at which the letter is supposed to be read. Cover/Uncover/Alternative-Cover Testing Correct Answer: Examines the binocular relationship of the eyes. The patient is asked to fixate on a distant object (or near) while their eyes are observed. Exotropia Correct Answer: One eye fixating while the other deviates outward. Esotropia Correct Answer: One eye fixating while the other deviates inward. Hypertropia Correct Answer: One eye fixating while the other deviates upward. Keratometry/Ophthalmometry ("K-reading") Correct Answer: Measures the curvature and focusing power of the cornea. Allows yo
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Liberty University
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CPO
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certified paraoptometric cpo unit iii clinical principles and procedures
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