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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 |
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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) |
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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 |
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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 |
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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 |
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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 |
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What is Coat's White Ring?
- composition ? - management ? |
small corneal opacity indication presence of previous foreign body
- iron and or calcium - none |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |