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12 Cards in this Set
- Front
- Back
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Diminished visual acuity (usually 2 lines) not due to an organic pathological condition
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Amblyopia
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Etiology of amblyopia
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Lack of neurosensory stimulation due to conflicting images (strabismus) or blurred retinal image
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which eye do you patch if there is lazy eye
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the good eye
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sign of intraocular tumor
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white reflex
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Most common cause of amblyopia
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Strabismus Amblyopia
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Amblyopia ex anopsia?
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Results from inadequate sensory input due to opacities in ocular media
Cataract, corneal scarring, ptosis Rarely, prolong patching of normal eye can cause amblyopia AKA Form-Deprivation/ Occlusion Amblyopia |
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What type of strabismus?
Non-paralytic Angle of misalignment is equal in all directions of gaze |
concomitant
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what type of strabismus?
Paralytic or restrictive Angle of misalignment varies with the direction of gaze Extraocular muscle or nerve may not be functioning properly, or movement may be mechanically restricted i.e., cranial nerve palsy, orbital disease or trauma (blow-out fracture) |
Non-Concomitant/ Incomitant
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What is a phoria?
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Phoria – latent deviation
Occurs when binocular vision/ fusion is interrupted (cover test - covered eye deviates exo or eso) |
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What is a tropia?
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Tropia – manifest deviation
Deviation present when both eyes are open Constant or intermittent |
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What age child is appropriate for Snellen
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5
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What is cause of congenital glaucoma
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Descemet's membrane ruptures and allows fluid to enter cornea causing cloudiness
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