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