Kim, W 4-7-08 Amblyopia & Strabismus

By leelara, Apr 2008

Front

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

PLAY BUTTON

Progress

1/12

Click to flip

Diminished visual acuity (usually 2 lines) not due to an organic pathological condition	Amblyopia
Etiology of amblyopia	Lack of neurosensory stimulation due to conflicting images (strabismus) or blurred retinal image
which eye do you patch if there is lazy eye	the good eye
sign of intraocular tumor	white reflex
Most common cause of amblyopia	Strabismus Amblyopia
Amblyopia ex anopsia?	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
What type of strabismus? Non-paralytic Angle of misalignment is equal in all directions of gaze	concomitant
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
What is a phoria?	Phoria – latent deviation Occurs when binocular vision/ fusion is interrupted (cover test - covered eye deviates exo or eso)
What is a tropia?	Tropia – manifest deviation Deviation present when both eyes are open Constant or intermittent
What age child is appropriate for Snellen	5
What is cause of congenital glaucoma	Descemet's membrane ruptures and allows fluid to enter cornea causing cloudiness (?)

Browse Flashcards