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Cataracts An overview
What is a cataract <ul><li>Clouding of the lens </li></ul><ul><li>Most are related to aging </li></ul><ul><li>By 80, more ...
Lens <ul><li>Clear part of eye  </li></ul><ul><li>Focuses light or image on retina </li></ul><ul><li>Retina is light sensi...
Other types of cataracts <ul><li>Secondary (can form after surgery, or with other health problems) </li></ul><ul><li>Traum...
How does it look with cataracts?
What causes cataracts? http://www.nei.nih.gov/ <ul><li>Lens: Works like camera lens. Focuses light on retina, where image ...
How it affects vision? <ul><li>Clumps of protein reduce sharpness of image </li></ul><ul><li>Clear lens may change to yell...
Who is at risk for cataracts? <ul><li>Diseases such as diabetes </li></ul><ul><li>Previous eye injury or surgery </li></ul...
How can I protect my eyes? <ul><li>Wear sunglasses and a brimmed hat </li></ul><ul><li>Stop smoking </li></ul><ul><li>Nutr...
Symptoms & Detection <ul><li>Cloudy, blurred vision </li></ul><ul><li>Faded colors </li></ul><ul><li>Glare from headlights...
How is it detected? <ul><li>Visual acuity test (Eye test for distances) </li></ul><ul><li>Dilated eye exam </li></ul><ul><...
How is it treated? <ul><li>Can be improved with new eyeglasses, brighter lighting, anti glare sunglasses or magnifying gla...
What research is being done? <ul><li>Effect of sunlight exposure (may be related) </li></ul><ul><li>Vitamin supplements wh...
Interactive eye <ul><li>Click on link below for an interactive look at the eye </li></ul><ul><li>http://www.nei.nih.gov/he...
More information <ul><li>Tutorial on cataracts from Medline Plus: </li></ul><ul><li>http://www.nlm.nih.gov/medlineplus/tut...
Resources National Eye Institute http://www.nei.nih.gov/about/
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Cataracts

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A description of cataracts: what they are, how they form, and what can be done to alleviate them.

Published in: Education, Health & Medicine

Cataracts

  1. 1. Cataracts An overview
  2. 2. What is a cataract <ul><li>Clouding of the lens </li></ul><ul><li>Most are related to aging </li></ul><ul><li>By 80, more than half Americans have a cataract or have had surgery for it. </li></ul><ul><li>Can occur in one or both eyes </li></ul><ul><li>Cannot spread from eye to eye </li></ul>
  3. 3. Lens <ul><li>Clear part of eye </li></ul><ul><li>Focuses light or image on retina </li></ul><ul><li>Retina is light sensitive tissue at back of eye </li></ul><ul><li>A cloudy lens produces an blurred image </li></ul>
  4. 4. Other types of cataracts <ul><li>Secondary (can form after surgery, or with other health problems) </li></ul><ul><li>Traumatic (develop after injury) </li></ul><ul><li>Congenital (can occur at birth) </li></ul><ul><li>Radiation cataract (after exposure to radiation) </li></ul>
  5. 5. How does it look with cataracts?
  6. 6. What causes cataracts? http://www.nei.nih.gov/ <ul><li>Lens: Works like camera lens. Focuses light on retina, where image recorded. Also adjusts focus, letting us see close and far. Lens made up of protein and water. </li></ul><ul><li>With aging, protein may clump together and start to cloud. </li></ul><ul><li>Researchers believe smoking/diabetes MAY contribute, or it can be wear and tear. </li></ul>
  7. 7. How it affects vision? <ul><li>Clumps of protein reduce sharpness of image </li></ul><ul><li>Clear lens may change to yellowish/brownish color </li></ul>
  8. 8. Who is at risk for cataracts? <ul><li>Diseases such as diabetes </li></ul><ul><li>Previous eye injury or surgery </li></ul><ul><li>Prolonged use of corticosteriods </li></ul><ul><li>Behavior such as smoking & alcohol </li></ul><ul><li>Environment such as prolonged exposure to sun </li></ul>
  9. 9. How can I protect my eyes? <ul><li>Wear sunglasses and a brimmed hat </li></ul><ul><li>Stop smoking </li></ul><ul><li>Nutrition (eat green leafy vegetables, fruit, etc.) </li></ul><ul><li>Comprehensive dilated eye exam at least once/every 2 years. </li></ul><ul><li>Early treatment may save your sight. </li></ul>
  10. 10. Symptoms & Detection <ul><li>Cloudy, blurred vision </li></ul><ul><li>Faded colors </li></ul><ul><li>Glare from headlights/lamps </li></ul><ul><li>Poor night vision </li></ul><ul><li>Double vision </li></ul><ul><li>Frequent prescription changes </li></ul>
  11. 11. How is it detected? <ul><li>Visual acuity test (Eye test for distances) </li></ul><ul><li>Dilated eye exam </li></ul><ul><li>Tonometry (instrument to measure pressure in eye) </li></ul>
  12. 12. How is it treated? <ul><li>Can be improved with new eyeglasses, brighter lighting, anti glare sunglasses or magnifying glasses </li></ul><ul><li>Surgery (remove cloudy lens and replace with artificial lens) </li></ul><ul><li>Cataract surgery will include only one eye at a time, is one of the safest and most effective types of surgery. </li></ul>
  13. 13. What research is being done? <ul><li>Effect of sunlight exposure (may be related) </li></ul><ul><li>Vitamin supplements which may slow progression </li></ul><ul><li>Genetic studies, to better understand cataract development </li></ul>
  14. 14. Interactive eye <ul><li>Click on link below for an interactive look at the eye </li></ul><ul><li>http://www.nei.nih.gov/health/eyediagram/ </li></ul>
  15. 15. More information <ul><li>Tutorial on cataracts from Medline Plus: </li></ul><ul><li>http://www.nlm.nih.gov/medlineplus/tutorials/cataracts/htm/_yes_50_no_0.htm </li></ul>
  16. 16. Resources National Eye Institute http://www.nei.nih.gov/about/

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