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PTG 105-Exam 4-ENT 4
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What type of Kerititis or Corneal Ulcer has characteristic blisters on the eyelids and dendritic ulcers?
Viral
What is the term for near sightedness?
Myopia
What I the term for far sightedness?
Hyperopia
What is Myopia?
Near sightedness
What is Hyperopia?
Far sightedness
What is Astigmatism?
Imperfection in the curvature of the eye
What is the term for an imperfection in the curvature of the eye?
Astigmatism
What is Presbyopia?
Refractory error due to loss of lens elasticity
When is a common onset for presbyopia?
40s
What is the term for a refractory error caused by reduced lens elasticity?
Presbyopia
What is the treatment for refractory errors of the eye?
Corrective lenses
Where does light converge in an eye with Myopia?
Before reaching the retina
Where does light converge in an eye with Hyperopia?
Behind the retina
What is the term for the condition where light converges behind the retina?
Hyperopia
What is the term for the condition where light converges in front of the retina?
Myopia
Where does light converge in an eye with Presbyopia that is trying to see a close object?
Behind the retina
What is more difficult to see with Presbyopia?
Close object
Too hard to accommodate the lens
What is the most common cause of blindness?
Cataracts
What is the third cause of blindness?
Glaucoma
Where is visual impairment most prevalent?
1.) SE asia
2.) W Pacific
3.) Africa
Where is visual impairment lest prevalent?
Europe
Americas
Eastern Mediterranean
Hat is a cataract?
Lens opacity
What is the term for lens opacity?
Cataract
What is the most common cause of painless slow progressive vision loss?
Cataract
Are cataracts lateral or bilateral?
Usually bilateral
What are the clinical signs of Cataracts?
Dirty windshield effect
Red reflex absent
In what disease is red reflex absent?
Cataracts
What percent of people in the US have had cataracts by age 80?
80%
What are associated diseases for Cataracts?
Infections (especially neonatal)
Galactosemia (especially neonatal)
Diabetes Mellitus
Wilson’s disease
Corticosteroids
Radiation
What are symptoms of cataracts?
Hazy vision loss
Colors seem faded
Poor night vision
Double vision
Multiple changes in prescription
What physical changes occur with cataracts?
Rupture of lens capsule
Lens capsule cortex may liquefy
What are complications of cataracts?
Elevation of intraocular pressure with optic nerve damage
What is the treatment for cataracts?
Remove cloudy lens and replace with artificial
What is glaucoma?
Rise in intraocular pressure that can damage the optic nerve
What is the number one cause of blindness in blacks?
Glaucoma
What are the risk factors for glaucoma?
Over 40 years
Black
Family history
Steroid eye drops
Diabetes
Previous eye injury
What are the two categories of Glaucoma?
Open and Closed angle
What is the most common form of Glaucoma?
Open angle (90%)
Is open angle glaucoma painful?
No usually
Author:
kyleannkelsey
ID:
217940
Card Set:
PTG 105-Exam 4-ENT 4
Updated:
2013-05-06 00:39:02
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PTG 105 Exam ENT
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PTG 105-Exam 4-ENT 4
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