Exam 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What are cataracts? | Lens disorder. Cloudiness of the eye's LENS - causes vision loss
🗑
|
||||
| What are the lens for? How do they function? | Lens focus light onto retina. Made of mostly water and protein. Proteins arranged in precise way - keeps lens clear for light to pass through.
🗑
|
||||
| Pathophysiology of cataracts? | In age, protein may clump together and cloud small area of the lens.
🗑
|
||||
| Population of those affected with cataracts? | Over 65 years old. 60-90 % of Americans over 65 yo. More common in women.
🗑
|
||||
| Generally, where does cataracts begin in the lens? | Periphery of the lens, spreading out to the central portion
🗑
|
||||
| What are the risk factors for cataracts? | - Aging- smoking- Congenital defect (German measles during pregnancy)- Long term use of coricosteroid drugs- Systemic disease: DM or hyPOthyroidism- Exposure to radiation/long hrs of bright sunlight
🗑
|
||||
| Congenital cataracts: explain how? | Can be present at birth.German measles during pregnancy, unborn child may get cataracts.
🗑
|
||||
| Cataracts and smoking | Smoking can potentially damage lens proteins and fiber cell membrane in the lens.
🗑
|
||||
| Name the types of cataracts | 1. Immature (portion of lens)2. Mature (opacity of entire lens)
🗑
|
||||
| Describe mature cataracts | Opacity of the entire lensMost significant form of cataractAppearance of "frost on a window"Ripen cataracts
🗑
|
||||
| Describe clinical manifestation of cataracts | Starts out small, little effect on visionMay notice slight blurred vision (looking through cloudy glass)- Dimmed colors- Problem driving @ night (glare w/ oncoming headlights)- Freq. Rx change in glasses-Double visionRipen cataract:waterfall
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
JLHaddow
Popular Science sets