Visual Assessment and Testing Flashcards
6 cards from real COA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Visual Assessment and Testing flashcards as text
When testing visual acuity in a child using the Tumbling E chart, what does the child need to indicate?
Answer: The direction the 'legs' of the letter E are pointing
The Tumbling E chart is used for patients who cannot name letters. The child indicates — by pointing fingers or using a hand-held card — the direction the 'legs' of the letter E point (up, down, left, or right).
What is the purpose of a pinhole occluder during visual acuity testing?
Answer: To determine whether reduced acuity is due to refractive error
A pinhole occluder limits incoming light to the central paraxial rays, bypassing refractive error. If vision improves with pinhole, the reduction is likely refractive; if it does not improve, pathology (media opacity, retinal or optic nerve disease) should be suspected.
The Ishihara color vision test primarily screens for deficiencies in which color axis?
Answer: Red-green defects (protan and deutan)
The Ishihara pseudoisochromatic plates are specifically designed to detect red-green color deficiencies (protanopia, protanomaly, deuteranopia, deuteranomaly), which are the most common inherited color vision defects.
A patient's near vision is tested with a near card and documented as J3 at 40 cm. What does this indicate?
Answer: The patient can read Jaeger size 3 text at 40 cm without correction
The Jaeger (J) notation is a near vision scale using a series of text paragraphs of increasing size. J3 indicates the patient can read Jaeger size 3 text, a moderately small print size, at the specified test distance of 40 cm.
During confrontation visual field testing, the COA is seated opposite the patient at arm's length. Which technique is being used when the examiner wiggles a finger in each quadrant while the patient fixates on the examiner's nose?
Answer: Finger motion confrontation
When the examiner wiggles a finger in the peripheral field while the patient fixates on the examiner's face, this is the finger motion (or finger wiggle) confrontation technique — a quick gross screening of the visual field.
Which of the following BEST describes the proper test distance for standard Snellen distance visual acuity testing?
Answer: 20 feet (6 meters)
The standard distance for Snellen visual acuity testing is 20 feet (approximately 6 meters). At this distance, light rays entering the eye are essentially parallel, simulating optical infinity and minimizing accommodation.