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Opt 631 Exam 1 Corneal Diseases & Bacterial Keratitis
Dr Doll Lecture 1
46
Medical
Graduate
09/14/2011

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Cards

Term
What is the difference between PEE and PEK?
Definition
PEE has slightly depressed focal areas of disruption or lesion, needs staining to see

PEK has accumulation of cells that are surrounded by a focal inflammatory infiltrate, can be seen w/o staining but do stain well with Rose bengal or lissamine green
Term
What are the two forms of SPK?
Definition
PEE and PEK
Term
What are the sx of SPK?
Definition
FB sensation

redness

tearing

photophobia
Term
What SPK has a diffuse pattern?
Definition
allergic, bacterial or adenoviral conjunctivitis

severe dry eye
Term
What causes upper 1/3 SPK?
Definition
superior limbic keratoconjuncttivitis

Vernal keratoconjunctivitis

trachoma
Term
What causes lower 2/3 SPK?
Definition
staph

ectropion or entropion

lagophthalmos

exposure keratopathy
Term
What causes interpalpebral SPK?
Definition
keratoconjunctivitis sicca (KCS)

exposure keratopathy

UV keratopathy
Term
What causes a linear streak SPK?
Definition
Foreign body

trichiasis

entropion
Term
What can causes sectoral SPK?
Definition
trichiasis

trauma
Term
What is confluent SPK?
Definition
When it is focused around a local spot. Shallower than focal SPK
Term
What is focal SPK?
Definition
Deeper than confluent SPK, but still focused around a local spot
Term
What are common pathogens that can cause Superficial bacterial keratitis?
Definition
Staph

Strep

Haemophilus
Term
What is the most common ocular pathogen?
Definition
staph
Term
What are s/sx of Superficial Bacterial Keratitis?
Definition
lower lid is primary sight of infection

inferior cornea PEK due to staph exotoxins

conj injection

mucopurulent discharge

crusty eyes in AM

PEE, sometimes PEK
Term
What is tx for Superficial Bacterial Keratitis?
Definition
lid hygiene

AB ointment
Term
What are AB drops for Superficial Bacterial Keratitis?
Definition
gentamicin

tobramycin

polytrim

polymyxin
Term
What is besifloxacin?
Definition
ask Danny
Term
What is moxeza?
Definition
ask Danny
Term
What is a DDx between Staph and Strep infections?
Definition
Strep may have petechial hemorrhages
Term
What are associated signs of strep Superficial Bacterial Keratitis?
Definition
pseudomembrane formation

mucopurulent discharge

acute conjunctivitis

Upper respiratory infection (esp. Children)

Otitis media (esp. Children)
Term
What are tx's for strep Superficial Bacterial Keratitis?
Definition
AB ointment
Term
What is haemophilus?
Definition
gram neg. bacteria that can cause Superficial Bacterial Keratitis
Term
What are associated signs of haemophilus Superficial Bacterial Keratitis?
Definition
acute conjunctivitis

mucopurulent discharge

matted eyes

URI or otitis media (esp. children)
Term
What is the difference between PEE and PEK?
Definition
PEE has slightly depressed focal areas of disruption or lesion, needs staining to see

PEK has accumulation of cells that are surrounded by a focal inflammatory infiltrate, can be seen w/o staining but do stain well with Rose bengal or lissamine green
Term
What are the two forms of SPK?
Definition
PEE and PEK
Term
What are the sx of SPK?
Definition
FB sensation

redness

tearing

photophobia
Term
What SPK has a diffuse pattern?
Definition
allergic, bacterial or adenoviral conjunctivitis

severe dry eye
Term
What causes upper 1/3 SPK?
Definition
superior limbic keratoconjuncttivitis

Vernal keratoconjunctivitis

trachoma
Term
What causes lower 2/3 SPK?
Definition
staph

ectropion or entropion

lagophthalmos

exposure keratopathy
Term
What causes interpalpebral SPK?
Definition
keratoconjunctivitis sicca (KCS)

exposure keratopathy

UV keratopathy
Term
What causes a linear streak SPK?
Definition
Foreign body

trichiasis

entropion
Term
What can causes sectoral SPK?
Definition
trichiasis

trauma
Term
What is confluent SPK?
Definition
When it is focused around a local spot. Shallower than focal SPK
Term
What is focal SPK?
Definition
Deeper than confluent SPK, but still focused around a local spot
Term
What are common pathogens that can cause Superficial bacterial keratitis?
Definition
Staph

Strep

Haemophilus
Term
What is the most common ocular pathogen?
Definition
staph
Term
What are s/sx of Superficial Bacterial Keratitis?
Definition
lower lid is primary sight of infection

inferior cornea PEK due to staph exotoxins

conj injection

mucopurulent discharge

crusty eyes in AM

PEE, sometimes PEK
Term
What is tx for Superficial Bacterial Keratitis?
Definition
lid hygiene

AB ointment
Term
What are AB drops for Superficial Bacterial Keratitis?
Definition
gentamicin

tobramycin

polytrim

polymyxin
Term
What is besifloxacin?
Definition
ask Danny
Term
What is moxeza?
Definition
ask Danny
Term
What is a DDx between Staph and Strep infections?
Definition
Strep may have petechial hemorrhages
Term
What are associated signs of strep Superficial Bacterial Keratitis?
Definition
pseudomembrane formation

mucopurulent discharge

acute conjunctivitis

Upper respiratory infection (esp. Children)

Otitis media (esp. Children)
Term
What are tx's for strep Superficial Bacterial Keratitis?
Definition
AB ointment
Term
What is haemophilus?
Definition
gram neg. bacteria that can cause Superficial Bacterial Keratitis
Term
What are associated signs of haemophilus Superficial Bacterial Keratitis?
Definition
acute conjunctivitis

mucopurulent discharge

matted eyes

URI or otitis media (esp. children)
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