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13 Cards in this Set

  • Front
  • Back
What is Salzmann's nodular degeneration ?
- composition ?
- location ?
non inflammatory deposition; usually a result of hypersentivity or immune response to bacteria
- hyaline plaques
- b/t epithelium & Bowman's membrane
What are the clinical characteristics of Salzmann's nodular degeneration?
- management ?
bluish-white in appearance (typically around pupillary area)
- none unless vision reduced --> then consider referral for penetrating keratoplasty (PK) or phototherapeutic keratectomy (PTK)
What is Calcific Band Keratopathy?
- composition ?
- location ?
'swiss cheese' disease; usually from inflammatory disease that has gone untreated or systemic dz such as hyperparathyroidism, vitamin D toxicity, sacrcoidosis, renal failure
- calcium deposits
- interpalpebral zone
What are clinical characteristics of Calcific Band Keratopathy?
- management?
- hazy, swiss cheese appearance across interpalpebral zone of cornea leading to symptoms including decreased vision and occasional foreign body sensation
- anesthesize cornea -->sln of EDTA --> gently scrape cornea
- excimer laser such as PTK has been used
What is Mooren's degeneration?
- inflammatory ?
- two types:
- Ddx ?
slowly progressive marginal ulcer beginning in teens or early twenties which may perforate; possibly association with collagen vascular disease
- large inflammatory component
- benign: unilateral, older ppl, responds to conj. resection
- severe: bilateral, younger ppl, difficult to manage
- terrien's marginal degeneration
What are clinical characteristics of Mooren's degeneration?
- management ?
eye becomes red and painful, spreads circumferentially to involve entire cornea (peri --> central k)
- pentrating keratoplasty, conjunctival resection; poor prognosis due to imflammatory component
What is Coat's White Ring?
- composition ?
- management ?
small corneal opacity indication presence of previous foreign body
- iron and or calcium
- none
What is Map-Dot-Fingerprint dystrophy?
- characteristics: bilateral/unilateral ?
inheritance ?
- an epithelial dystrophy (a precursor to recurrent corneal erosions) --> most common anterior corneal dystrophy
- bilateral, sometimes AD inheritance
What are clinical characteristics of Map Dot Fingerpring dystrophy?
- symptoms
- managment
areas of thickened epithelial basement membrane cause ridges resembling maps or fingerprints (indirect ill.)
- microcysts resembles dots
- could lead to edema
- symptoms more common with older patients including blurred vision, FB sensation, and pain with epithelial erosion
- none with assymptomatic; treat with hypertonic saline drops or ointment, tighter fitting bandage CLs in erosion phase, epithelial scraping
What is Recurrent Corneal Erosion?
- other causes?
poor hemidesmosomal attachments b/t epithelium and basement membrane
- 50% have MDF dystrophy, trauma, metaherpetic lesions, bullous keratopathy, exposure keratitis, trichiasis
Signs and symptoms of Recurrent corneal erosion?
- managment ?
- usually erosion upon waking with severe pain, photophobia, and tearing
- stains w/ NaF
- 1 gtt 1% cyclogyl or 2-5% homatropine (cyclopleging agents) with Ab ointment to prevent secondary infection such as POLYSPORIN or gentamicin --> then pressure patch for 24 hrs or bandage CLs
- tx can proceed to stromal puncturing and excimer laser
What is Meesman's epithelial dystrophy?
- signs and symptoms?
- management
happens at an early age; bilateral, symmetrical, AD w/ incomplete penetrance
- large areas of micro cysts
- superificial keratectomy above Bowman's layer or excimer laser to provide smooth surface for epithelium to adhere
What is Reis-Buckler dystrophy?
- signs & symptoms ?
- managment ?
dystrophy of Bowman's layer; AD, bilateral, symmetrical
- basement membrane is very bumpy w/ projections
- excimer laser to lay down smooth surface