Micro: Eye Infections Flashcards
Main causative agent in infections outside the eye but in the orbital region such as blepharitis and styes.
Staph aureus
Swimming pool conjunctivitis.
Adenovirus
How can an infectious conjunctivitis be distinguished from an allergic conjunctivitis?
Infectious forms can spread from one eye to the other. Allergic forms tend to affect both eyes simultaneously.
Most serious viral conjunctivitis.
Herpes Simplex
AIDS conjunctivitis
Cytomegalovirus
Neonatal conjunctivitis
Chlamydia trachomatis, Neisseria gonorrhoeae
FLIES, fomites, fingers
Chlamydia trachomatis, serotypes A-C
-most common world wide eye infection
Thayer Martin Agar
N. gonorrhoeae
Pharyngoconjunctival fever
Adenovirus (swimming pools)
-self limiting with sore throat and red eyes
Keratoconjunctivitis
Adenovirus (classical pink eye, not from swimming pools)
- no sore throat
- highly contaigious
- red eyes, fever
Syncytia on Tzank smear
HSV-1, HSV-2, or VZV
-giant multinucleated cells diagnostic during eye infections
Owl’s Eye Inclusions
Cytomegalovirus
-CMV retinitis in AIDS patients
Acute hemorrhagic conjunctivitis
Coxsackie A24 or Enterovirus E70
Koplik Spots
Measles
Cataract, Gluacoma
Rubella
Wearing contact lenses for too long causing corneal abrasions
Pseudomonas a.
Hematogenous spread, pseudohyphae, floaters, eye pain
Candida Albicans
-can lead to blindness
KOH prep
fungi and parasites
Sabouraud Dextrose
Fungi only
homemade contact solution, swimming in fresh water
Acanthamoeba
-leads to cataracts and vision loss
Wet mount
diagnositc of any type of amoeba
Undercooked pork
Toxoplasmosis
Larvae encyst in eye
Trichinella Spiralis
Black Fly, blindness
Onchocerca volvulus
-African River Blindness
Chrysops Fly, no blindness
Loa loa
-rainforests of west Africa
