Practice Test Geeks(JCAHPO) International Joint Commission Allied Health Personnel in Ophthalmology Practice Test
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Imaging 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 Imaging flashcards as text

  1. When photographing the fundus, a hazy image with reduced contrast most likely indicates:

    Answer: Media opacity such as cataract or vitreous haze

    Media opacities (cataract, corneal scar, vitreous hemorrhage) scatter light and reduce fundus image contrast and clarity.

  2. The 'early arteriovenous phase' of a fluorescein angiogram typically occurs how many seconds after injection?

    Answer: 10-15 seconds

    The arteriovenous (transit) phase of FA typically occurs 10-15 seconds after antecubital injection, showing arterial filling before venous return.

  3. On OCT, a 'double hump' foveal contour in a young patient most likely suggests:

    Answer: Foveal hypoplasia

    Foveal hypoplasia is characterized by absent foveal pit development on OCT, sometimes appearing as a shallow or double-humped contour without the normal central depression.

  4. Which scanning laser ophthalmoscope (SLO) wavelength is best for visualizing the choroid?

    Answer: 785-830 nm near-infrared laser

    Near-infrared wavelengths (785-830 nm) penetrate the RPE more effectively, allowing better visualization of choroidal structures with SLO.

  5. A patient undergoes wide-field fluorescein angiography. The primary advantage of wide-field imaging over standard 30-degree FA is:

    Answer: Visualization of peripheral retinal pathology in a single capture

    Wide-field FA (100-200 degrees) captures far peripheral retina in a single image, revealing ischemia, neovascularization, and vasculitis not visible on standard fields.

  6. In automated perimetry, which reliability index measures the patient's response to stimuli presented at locations previously identified as blind?

    Answer: False negative rate

    False negative rate measures how often a patient fails to respond to suprathreshold stimuli in areas previously seen; elevated rates suggest inattention or fatigue.

  7. Enhanced depth imaging (EDI) OCT was developed primarily to improve visualization of:

    Answer: Choroid and its boundaries

    EDI-OCT places the zero-delay line closer to the choroid, improving sensitivity at that depth and enabling clear visualization of choroidal thickness and vasculature.