Common Eye Diseases: Front of the Eye Flashcards
What is in the front half of the eye?
cornea to the back of the crystalline lens
How is the type of keratitis classified?
by which layer of the cornea it affects
What are the two types of keratitis?
-Keratitis Sicca/Keratoconjunctivitis Sicca
-Herpes Simplex Keratitis
Keratitis refers to a disorder caused by tear deficiency or excessive evaporation of tears. True/False
True
What symptoms will someone with keratitis experience? 6
-Blurring of vision
-Burning of the eye
-Scratchiness
-Grittiness
-Discomfort or pain
-Excess tearing or redness
What virus commonly creates corneally inflammatory disorder (keratitis)?
Herpes Simplex
How quickly does the cornea heal after keratitis is diagnosed?
7-14 days in approx 85% of cases with drops or ointment
What medicine/procedures can be used to correct keratitis? 3
-drops
-ointments
-scraping virus of the diseased epithelium
What percentage of people will have keratitis over what time frame and in what areas?
50% recurrence rate over 5 years and may be highly localized in the lymph nodes, chin, eyes, and genitals.
For a corneal foreign body is vision affected?
It can be - depends on depth and location of the corneal foreign body
is a corneal foreign body an ocular emergency?
yes
What two things affect the prognosis of a corneal foreign body?
-the amount of tissue destruction
-rate of repair
Is copper/brass or iron/steel more irritating when a px has a metallic foreign body?
Copper/Brass
What is a high velocity foreign body a result of?
Hammering, chiseling or lathing
What are symptoms of a metallic foreign body? 3
-redness
-foreign body sensation
-photophobia