ophth exam

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Author:
crazysupermedic
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267099
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ophth exam
Updated:
2014-03-19 12:52:28
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ophth exam
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ophth exam
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  1. what is the major refractive surface of the eye
    cornea
  2. the depression in the center of the macula is the what
    fovea
  3. what photo receptor is at the optic disc
    none (physiologic blind spot)
  4. chief cardinal VS of eye
    VA
  5. which nerve is affected by the afferent pathway
    optic
  6. which nerve and which part of the nervous system affects the efferent pathway
    oculomotor + parasympathetic
  7. 20/12 to 20/25 is what type of visual disability
    normal vision
  8. 20/30 to 20/70 is what type of visual disability
    near normal vision
  9. 20/80 to 20/160 is what type of visual disability
    moderate low vision
  10. 20/200 to 20/400 (CF 10ft) is what type of visual disability
    severe low vision/legally blind
  11. CF 8ft to 4ft is what type of visual disability
    profound low vision
  12. less than CF 4ft is what type of visual disability
    near total blindness
  13. no light perception is what type of visual disability
    total blindness
  14. what are the adrenergic-stimulating dilating drops
    phenylephrine
  15. what are the cholinergic blocking dilating drops
    • tropicamide
    • cyclopentolate
    • homatropine
    • scopolamine
    • atropine
  16. what test evaluates the macula
    amsler grid testing
  17. this is the normal state of sight, objects at infinity are seen clearly with the unaccommodated eye
    emmetropia
  18. this is known as farsighted. The axial length of the eye is too short causing the image to fall behind the retina
    hyperopia
  19. this is known as nearsighted. The axial length of the eye is too long causing the image to fall in front of the retina
    myopia
  20. this is known of refracting power of the cornea and lens is different in one meridian that the other OR refractive errors in the horizontal and vertical axis differ
    astigmatism
  21. this is known as old people vision. it is the loss of accommodation. Loss of the ability to focus on near objects is the typical manifestation.
    presbyopia
  22. what is the cause of presbyopia
    progressive hardening of lens and the loss of ability to change shape
  23. if a pt has a negative on their glass Rx, are they myopia or hyperopia
    myopia
  24. if a pt has a positive on their glass Rx, are they myopia or hyperopia
    hyperopia
  25. what is the misalignment of the two eyes called
    strabismus
  26. heterotropia = ???
    strabismus
  27. what is a latent tendency for misalignment.
    heterophoria
  28. difference in refractive error > than 1 diopter
    anisometropia
  29. white pupil (leukochorea) = ?
    retinoblastoma

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