Disease 22 - Cataracts

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Author:
sookylala
ID:
224847
Filename:
Disease 22 - Cataracts
Updated:
2013-06-24 08:54:47
Tags:
cataracts
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Description:
cataracts
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  1. lens vacuole
    • superfical lens cortex
    • spherical cysts
    • age
  2. water cleft
    • radial wedge clft in cortex
    • faint white // lines
  3. epicapsular stars
    • congenital opacities
    • remnats of pupillary membrane
  4. mittendorf dot
    • congential
    • remnant of hyaloid artery
    • nasal
  5. ectopia lentis
    • lens displacement
    • marfans stretched zonules
    • weill marchesani
  6. Anterior polar capsular cataract
    • assoc persistent pupillary membrane
    • opaque cortical plaque projects fwd
  7. posterior polar capsular cataract
    • assoc persistent hyaloid, post lenticonus
    • stays in centre
    • progressive
  8. coronary supranuclear cataract
    • sporadic
    • round opacities may be hidden by iris, surrounds nucleus like a crown
    • non progressive
  9. cortical cataract
    • changes to peripheral regions of lens due to protein aggregation and increase in water content
    • spoke like opacities
    • assoc: vacuoles and water clefts
    • age uv RF
  10. zonular lamellar cataract
    • affects lamellar ant and post
    • round shell like opacity surround nucleus
    • riders-radial opacities
  11. central pulverulent cataract
    • spheroidal biconvext opacity fetal nucleaus
    • non prog
  12. true capsular exfoliation
    • exposure to heat and radiation
    • ant lamellae peels fwd onto pupil
  13. pseudoexfoliation
    grey flakey materio on ant lens
  14. pigment dispersion syndrome
    • males, white 20-40
    • close rubbing of iris and zonules
    • pigment trabecular meshwork, iris surface changes
  15. concussional cataract?
    blunt non penetrating trauma-> anterior subcapsular opacity
  16. vossius ring?
    trauma induced imprinting of iris pignment onto iris
  17. Diabetic cataract?
    • juvenile- snowstorm
    • adult: cortical subcaps
  18. atopic cataract?
    • shield cataract
    • wrinkles in ant capsule
  19. sunflower cataract
    copper deposition in the lens

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