Term
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Definition
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Term
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Definition
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Term
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Definition
| Breakdown due to possibly age or systemic dz; may involve inflammatory process |
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Term
| What is an involutional corneal degeneration? |
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Definition
| common, age related corneal degeneration such as pinguecula, arcus, Hassle-Henle bodies, etc. |
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Term
| What is a non-involutional corneal degeneration? |
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Definition
| related to local or systemic conditions, less common. E.g. pterygium, band keratopathy, amyloid degeneration |
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Term
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Definition
| An asymptomatic, very common age related deposition of cholesterol. |
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Term
| What is the tx for arcus? |
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Definition
| None unless seen in pt's under 40, then refer for med exam/lipid profile |
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Term
| What is the a Limbal Girdle of Vogt? |
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Definition
| Asymptomatic, narrow, white opacity on nasal and temporal limbus area. Seen in pt's older than 45. |
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Term
| What is the pathology of a Limbal Girdle of Vogt? |
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Definition
| collagen fiber degeneration |
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Term
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Definition
| thinning of cornea, usually near limbus. Caused by dryness. May be symptomatic |
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Term
| What is the tx for a dellen? |
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Definition
| lubrication, therapeutic SCL |
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Term
| What are Hassall-Henle bodies? |
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Definition
| small, round thickenings of Descemet's membrane --> endothelial displacement. Located in periphery. If central = guttata. |
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Term
| What is the tx for Hassle-Henle bodies? |
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Definition
| none. May be sign of corneal |
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Term
| What is a Pellucid Marginal Degeneration? |
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Definition
| inferior corneal thinning that may lead to decreased VA's. Similar to keratoconus |
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Term
| What is the tx for Pellucid Marginal Degeneration? |
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Definition
| correct cylinder with gas permable CL, keratoplasty may be necessary |
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Term
| What is Terriens Marginal Degeneration? |
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Definition
| marginal stromal thinning leading to marginal opacification and neovascularization. May have lipid border; minor trauma can cause rupture |
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Term
| What is the tx for Terrien's Marginal Degeneration? |
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Definition
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Term
| What is a Marginal or Furrow Degeneration? |
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Definition
| bilateral thinning seen adjacent to arcus |
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Term
| What are the causes of Marginal or Furrow Degeneration? |
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Definition
| systemic dz such as SLE, leukemia, TB, polyarteritis nodosa |
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Term
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Definition
| serpiginous limbal ulceration due to autoimmune rxn. Two types, one in older, one in younger pt's |
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Term
| What is tx for Mooren's ulcer? |
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Definition
| Responds poorly, steroids may speed perforation. Refer to corneal specialist for reconstruction/excision |
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Term
| What is Posterior Crocodile Shagreen? |
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Definition
| small, gray polygonal patches in descemet's membrane. |
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Term
| What is the DDX and tx for Posterior Crocodile Shagreen? |
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Definition
| rule out other more serious conditions, otherwise, none. |
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Term
| What is amyloid degeneration? |
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Definition
| Degeneration of Bowman's and epithelium. Secondary to long standing dz. |
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Term
| What is the tx for amyloid degeneration? |
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Definition
| keratectomy or corneal transplant |
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Term
| What is Coats White Ring? |
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Definition
| white ring in cornea due to previous trauma (foreign body, etc). May contain iron |
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Term
| What is band keratopathy? |
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Definition
| interpalpebral fissure calium deposits in Bowman's and anterior stroma. |
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Term
| What causes band keratopathy? |
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Definition
| hypercalcemia, chronic uveitis, autoimmune dz |
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Term
| What is the tx for band keratopathy? |
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Definition
| lubrication, chelating agents, or just scrape off. |
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Term
| What is a bullous keratopathy? |
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Definition
| An acute and painful bubbling of the cornea due to fluid buildup under epithelium caused by long term corneal edema. Will eventually scar. |
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Term
| What is the tx for bullous keratopathy? |
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Definition
| Anti-edema tx, early stages --> SCL; late stages have poor prognosis |
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Term
| What is Salzmann's Nodular Degeneration? |
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Definition
| multiple, bluish white nodules at mid-periphery. Often indicates phlyctenular dz. |
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Term
| What is the tx for Salzmann's Nodular Degeneration? |
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Definition
| If asymptomatic, monitor. Use AB's and CL's w/epithelial breakdown. Keratoplasty if necessary |
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Term
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Definition
| A Vit A deficiency that leads to atrophy of conj. Goblet cells. |
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Term
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Definition
| acute corneal tissue liquefaction due to Vit A deficiency. |
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Term
| What is the tx for Xerophthalmia? |
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Definition
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Term
| What is the tx for keratomalacia? |
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Definition
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