Binocular - Crelier - by Irène
Quiz
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What's not a test for associated phoria ?
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Pola cross test
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Maddox
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Mallet
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Wessen card
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Sheedy disparometer
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Large vertical heterophorias (>4-6) are suspected to have _____ suspects.
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constant
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intermitent
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concomitant
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incomitent
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The found of vertical phoria may not be influenced by ... ?
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corrected or uncorrected horizontal phorias
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worn glasses in case of anisometropia
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reduced peripheral visual field
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used measurement system
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Case history is most important in / for ....
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intermittent tropia
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constant tropia
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incomitant strabism
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concomitant strabism
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In which case is usually an amblyopia developed with the VA reduced ?
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concomitant strabism
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incomitant strabism
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alternant strabism
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unilateral strabism
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What's the difference between a Hess and a Lancaster Screen ?
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Lancaster lines are curved
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Hess lines are curved
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Hess lines are straight
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there is no real difference, only the name
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Sheard & Percival correct ...
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as precise as possible
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as much as possible
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as low as needed
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as often as possible
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When you measure with a Sheedy disparometer, what do you find without prisms in front of the eye ?
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associated phoria
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fixation disparity
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tropia
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Basic phoria
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The definition of the x-intercept (Sheedy) is ...
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the amount of prisms needed to reduce the fixation disparity to zero.
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the amount of fixation disparity measured in minutes of arc
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measured between 3 BI and 3 BO
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measured between -3 dpt and +3 dpt
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As accommodation increases, there is an increasing _____ fixation disparity ?
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eso
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exo
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hypo
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hyper
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Which is the most common curve type in a Sheedy Graph ?
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I
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II
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III
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IV
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Which curve type indicates a poorley functioning binocular system ?
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I
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II
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III
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IV
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What's not an effect seen in Sheedy measurement, if you do vision training ?
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flattening a steep slope
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widening the comfort range
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convert type III to I
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What's the definition of associated phoria in europe ?
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found amount of prisms to align Polatest's cross & pointer tests
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found amount of prisms to align to complete sequence of Polatest
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found amount of prisms to align Mallett
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measured angle in min of arc on a test like Sheedy disparometer
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What's the definition of associated phoria outside europe ?
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found amount of prisms to align Polatest's cross & pointer tests
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found amount of prisms to align to complete sequence of Polatest
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found amount of prisms to align Mallett
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measured angle in min of arc on a test like Sheedy disparometer
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What's a correct statement for amblyopia ?
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all answers are correct
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condition of reduced visual acuity not correctable by refractive means
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reduced visual acuity not attributable to obvious structural or pathological ocular anomalies
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best corrected visual acuity is maximum 0.62 (20/30)
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at least 2 log difference between both eyes
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What does Griffin's rule of occlusion mean (2/1)
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2 days occlusion of sound eye / 1 day amblyopic eye / 1 day pause ... and so on
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2 days occlusion of amblyopic eye / 1 day sound eye / 1 day pause ... and so on
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2 days no occlusion / 1 day amblyopic eye / 1 day sound eye ... and so on
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2 days occlusion of sound eye / 1 day pause / 1 day amblyopic eye ... and so on
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How do you not manage a refractive amblyopia ?
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excentric fixation training
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full refractive correction
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addes lens or prisms
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occlusion
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vision training
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What's not a clinical characteristic of ametropic amblyopia ?
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Prognosis is generally good & improvement in visual acuity may also be found well into adulthood.
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Eye with greater ametropia shows greater amblyopia
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the greater the anisometropia, the greater the amblyopia
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hyperopic ametropia is the predominating factor in development of nonstrabismic amblyopia
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What's the definition of microstrabismus ?
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excentric fixation, but no displacement of visual axis
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excentric fixation & displacement of visual axis
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no excentric fixation & no displacement of visual axis
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no excentric fixation, but displacement of visual axis
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Strabismus amblyopia is ...
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all answers are correct
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deeper
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more therapy resistent
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usually in conjunction with excentric fixation
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a strabismic amblyopia is usually not in conjunction with... ?
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myopic amblyopia
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excentric fixation
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anormal retinal correspondance
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deeper supression scotoma