Cataract

• Cataract


  Opacity of the lens
• Cataract

  S/sx:

  • Loss of central vision = hazy or blurry vision
  • (-) pain
  • White pupil
  • Decrease perception of colors
• Classification of Cataract

  Senile - Associated with aging
• Classification of Cataract

  Congenital - Occurs at birth
• Classification of Cataract

  Traumatic - Associated with injury
• Classification of Cataract

  Secondary - Occurs following another eye or systemic disease
• Surgery is the only satisfactory treatment for cataracts
• Cataract Surgeries

  Intracapsular cataract extraction (ICCE) - Removal of cataract within its capsule
• Cataract Surgeries

  Extracapsular cataract extraction (ECCE) - Removal of cataract without the capsule; may be followed by intraocular lens implantation
• Cataract Surgeries

  Cryoextraction - Removal of the cataraci with the use of super - cooled probe
• Cataract Surgeries

  Iridectomy - Prevent secondary glaucoma after cataract extraction
• Cataract Surgeries

  Phacoemulsification - Breaking of the lens by delivering an instrument that gives ultrasonic vibrations; goes with a microsuction
• Cataract Surgeries

  Lens Replacement

  • Aphakic eyeglasses - objects are 25% magnified making them appear closer than they are; RISK for injury
• Cataract Surgeries

  Lens Replacement

  • Contact lens - can provide almost normal vision but high RISK for infection
• Cataract Surgeries

  Lens Replacement

  • IOL Implants - implant made of polyethyl methacrylate
• Cataract: Med

  Mydriatics - dilate pupil - not lifetime