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Diagnosis & Management of Strabismus and Amblyopia Flashcards

7 cards from real CO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Diagnosis & Management of Strabismus and Amblyopia flashcards as text

  1. Which prism test is used specifically to detect and measure a microtropia (monofixation syndrome)?

    Answer: 4-prism diopter base-out test

    The 4 base-out prism test reveals a central suppression scotoma; in monofixation syndrome, no refixation movement occurs in the deviated eye.

  2. The AC/A ratio is measured to evaluate the relationship between accommodation and convergence. A HIGH AC/A ratio is most characteristic of:

    Answer: Convergence excess esotropia

    A high AC/A ratio means that each diopter of accommodation drives excessive convergence, causing more esotropia at near—characteristic of convergence excess.

  3. Sensory deprivation amblyopia in an infant is most commonly caused by:

    Answer: Unilateral dense congenital cataract

    A unilateral congenital cataract blocks form vision during the critical period, producing the most severe form of amblyopia.

  4. A patient with Brown syndrome will show which characteristic finding on examination?

    Answer: Restricted elevation in adduction with a V-pattern

    Brown syndrome involves a tight or shortened superior oblique tendon sheath, mechanically restricting elevation in the adducted position.

  5. Which of the following is NOT a recognized amblyopia risk factor per the American Association for Pediatric Ophthalmology and Strabismus (AAPOS) guidelines?

    Answer: Equal high myopia of -10.00 D in both eyes

    Bilateral symmetric high myopia, while a refractive condition, does not create interocular competition and is not a classic amblyopia risk factor.

  6. A positive Bielschowsky head tilt test (deviation worsens with tilt to the ipsilateral shoulder) indicates palsy of which muscle?

    Answer: Ipsilateral superior oblique

    Tilting toward the ipsilateral side intorts that eye; if the superior oblique is paretic, the superior rectus must provide the intortion and also elevates, worsening the hyperdeviation.

  7. When is strabismus surgery for esotropia typically contraindicated as the primary treatment?

    Answer: When the esotropia is fully corrected by the hyperopic glasses prescription

    Fully accommodative esotropia is corrected by spectacles alone; surgery is not indicated because the deviation disappears with appropriate optical correction.