Patient Evaluation Flashcards
7 cards from real JCAHPO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Patient Evaluation flashcards as text
When using a non-contact tonometer (air-puff), the IOP reading is derived from:
Answer: The time required for the air pulse to applanate the cornea
The non-contact tonometer measures the time from air-puff initiation to corneal applanation; a shorter time indicates higher IOP.
A patient describes sudden painless loss of vision in one eye 'like a curtain coming down.' This presentation is most consistent with:
Answer: Rhegmatogenous retinal detachment
A spreading shadow or 'curtain' obscuring peripheral vision that progresses centrally is the classic description of rhegmatogenous retinal detachment.
When evaluating extraocular motility, which position of gaze isolates the function of the superior oblique muscle in the right eye?
Answer: Left gaze and down
The superior oblique primarily depresses and intorts the eye; its depression function is best isolated in adduction (left gaze for the right eye).
Stereoacuity tests such as the Randot or TNO test assess:
Answer: Binocular disparity-based depth perception
Stereoacuity tests measure the ability to perceive depth from binocular retinal disparity, reflecting the quality of binocular fusion.
The Schirmer test strip placed at the junction of the middle and lateral third of the lower lid is used to evaluate:
Answer: Aqueous tear production
The Schirmer test measures aqueous tear production by quantifying wetting of the strip in 5 minutes; ≥10 mm is generally normal.
A patient with a nuclear sclerotic cataract would most likely experience a myopic shift because:
Answer: Increased lens density raises the refractive index
Nuclear sclerosis increases the refractive index of the crystalline lens, causing increased convergence of light and a shift toward myopia (second sight).
In the four-diopter base-out prism test, movement of both eyes in response to a prism placed before one eye indicates:
Answer: Presence of bifoveal fusion
Bilateral eye movement (version and then fusional vergence) in response to a 4Δ base-out prism indicates intact bifoveal correspondence and active fusion.