PTG 105-Exam 4-ENT 4

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  1. What type of Kerititis or Corneal Ulcer has characteristic blisters on the eyelids and dendritic ulcers?
  2. What is the term for near sightedness?
  3. What I the term for far sightedness?
  4. What is Myopia?
    Near sightedness
  5. What is Hyperopia?
    Far sightedness
  6. What is Astigmatism?
    Imperfection in the curvature of the eye
  7. What is the term for an imperfection in the curvature of the eye?
  8. What is Presbyopia?
    Refractory error due to loss of lens elasticity
  9. When is a common onset for presbyopia?
  10. What is the term for a refractory error caused by reduced lens elasticity?
  11. What is the treatment for refractory errors of the eye?
    Corrective lenses
  12. Where does light converge in an eye with Myopia?
    Before reaching the retina
  13. Where does light converge in an eye with Hyperopia?
    Behind the retina
  14. What is the term for the condition where light converges behind the retina?
  15. What is the term for the condition where light converges in front of the retina?
  16. Where does light converge in an eye with Presbyopia that is trying to see a close object?
    Behind the retina
  17. What is more difficult to see with Presbyopia?
    • Close object
    • Too hard to accommodate the lens
  18. What is the most common cause of blindness?
  19. What is the third cause of blindness?
  20. Where is visual impairment most prevalent?
    • 1.) SE asia
    • 2.) W Pacific
    • 3.) Africa
  21. Where is visual impairment lest prevalent?
    • Europe
    • Americas
    • Eastern Mediterranean
  22. Hat is a cataract?
    Lens opacity
  23. What is the term for lens opacity?
  24. What is the most common cause of painless slow progressive vision loss?
  25. Are cataracts lateral or bilateral?
    Usually bilateral
  26. What are the clinical signs of Cataracts?
    • Dirty windshield effect
    • Red reflex absent
  27. In what disease is red reflex absent?
  28. What percent of people in the US have had cataracts by age 80?
  29. What are associated diseases for Cataracts?
    • Infections (especially neonatal)
    • Galactosemia (especially neonatal)
    • Diabetes Mellitus
    • Wilson’s disease
    • Corticosteroids
    • Radiation
  30. What are symptoms of cataracts?
    • Hazy vision loss
    • Colors seem faded
    • Poor night vision
    • Double vision
    • Multiple changes in prescription
  31. What physical changes occur with cataracts?
    • Rupture of lens capsule
    • Lens capsule cortex may liquefy
  32. What are complications of cataracts?
    Elevation of intraocular pressure with optic nerve damage
  33. What is the treatment for cataracts?
    Remove cloudy lens and replace with artificial
  34. What is glaucoma?
    Rise in intraocular pressure that can damage the optic nerve
  35. What is the number one cause of blindness in blacks?
  36. What are the risk factors for glaucoma?
    • Over 40 years
    • Black
    • Family history
    • Steroid eye drops
    • Diabetes
    • Previous eye injury
  37. What are the two categories of Glaucoma?
    Open and Closed angle
  38. What is the most common form of Glaucoma?
    Open angle (90%)
  39. Is open angle glaucoma painful?
    No usually
Card Set:
PTG 105-Exam 4-ENT 4
2013-05-06 00:39:02
PTG 105 Exam ENT

PTG 105-Exam 4-ENT 4
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