Cataract

Card Set Information

Author:
japanice27
ID:
306138
Filename:
Cataract
Updated:
2015-08-07 06:12:37
Tags:
cataract specialsenses
Folders:
special senses
Description:
a review about the special senses of the body.
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  1. What is cataract?
    Lens opacity or cloudiness.

    Can develop in one eye or both and at any age.

  2. R/F of cataract:
    • cigarette smoking
    • long-term use of corticosteroids (esp. high doses)
    • sunlight and ionizing radiation
    • diabetes
    • obesity
    • eye injuries
  3. S/SX of cataract:
    • Painless, blurry vision
    • Surroundings are dimmer
    • Light scattering; reduced contrast sensitivity, sensitivity to glare, and reduced visual acuity.
    • Myopic shift (ability to do close work->reading fine print without eyeglasses)
    • Astigmatism
    • Monocular diplopia (double vision)
    • Color shift
    • Brunescens
    • Reduced light transmission
  4. Assessment and DX findings:
    • *Degree of visual acuity is directly proportionate to density of the cataract
    • Snellen visual acuity test
    • Opthalmoscopy
    • Slit-lamp biomicroscopic exmination
  5. Medical management of cataract:
    NO NONSURGICAL tx cures cataract or px age-related cataracts.

    • *SURGICAL MANAGEMENT:
    • 1. Phacoemulsifiation (extracapsular cataract surgery)
    • 2. Lens replacement (aphakic eyeglasses, contact lenses, and intraoclar lens implants)

    *when both eyes have cataracts, ONE eye is treated FIRST.
  6. N/I for a pt with cataract:
    • withhold any anticoagulant (if appropriate)
    • give DILATING DROPS (mydiatrics)¬†every 10 mins for four doses at least 1 hour before surgery.
    • antibiotic, corticosteroids and anti-inflammatory drops may be given as prophylactic (px post op infxn and inflammation)
    • (+)pain-> mild analgesic (acetaminophen)

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