Eye strabismus
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is strabismus? | A condition in which the visual axis of one eye is not directed towards a fixation point.
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| what is Binocular single vision? | The ability to use both eyes together to see objects as one.
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| What is fusion? | The ability to perceive two similar images, one formed on each retina, as one.
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| What is diplopia? | Double vision
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| What is suppression? | The inhibition of the image from one eye, when both eyes are open. Done to avoid diplopia.
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| What is dissociation? | Disruption of fusion.
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| Occluder? | A tool used to cover an eye.
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| what is Primary position? | The straight ahead position.
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| what is Orthophoria? | No deviation, and non occurs upon dissociation.
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| what is Heterophoria? | visual axis that deviate from parallelism upon dissociation. LATENT deviation.
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| what is Heterotropia? | misalignment of visual axis. MANIFEST deviation.
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| What is esodeviation? | one or both eyes deviate NASALLY , with or without dissociation.
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| what is Exodeviation? | one or both eyes deviate TEMPORALLY, with or without disassociation.
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| what is Hyperdeviation? | Tendency for ONE of the eyes to deviate UPWARDS, with or without dissociation.
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| what is Hypodeviation? | Tendency for ONE of the eyes to deviate DOWNWARDS, with or without deviation.
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| what is Constant? (-tropia) | a MANEFEST deviation of the visual axes, present all times, under all testing conditions.
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| Whats Intermittent? (phoria) | a MANEFISTATION of the visual axis, only present at certain times, under certain conditions.
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| What is Stereopsis? | Appreciation for third demotion, depth perception.
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| what is Angle? | Amount of misalignment of the axis present.
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| what is Palsy? | Loss of function of a muscle.
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