Disease 9 - Conjunctival Disorders

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Author:
sookylala
ID:
224344
Filename:
Disease 9 - Conjunctival Disorders
Updated:
2013-06-22 07:18:42
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disease
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Description:
disease conjunc
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  1. What are the layers of the conjunctiva and cells?
    • epithelium- no keratinised, goblet, langerhands, melanocytes
    • stroma- bv, loose connective tissue, lymphocytes, lymphatic vessels, immune cells
  2. What is a pseudomembrane?
    coagulated exudate/fibrin adherent to inflamed conjunctival epithelium
  3. What are follicles?
    • discrete, yellowish, slightly elevated lesions
    • fornices
    • avascular- vessels may encircle
  4. What are papillae
    • palpebral and limbal bulbar conjunctiva
    • mosaic like pattern of elevated red dotsĀ 
    • macro<1mm, giant>1mm
    • non specific inflammatory response
  5. What is a symblepharon?
    fusion of palpebral and bulbar conjunctiva
  6. What is keratinisation?
    epithelial cells become keratinised
  7. What is a pinguecula?
    • yellow lesion on bulbarĀ 
    • adjacent to limbus mostly nasal, bilateral
    • due to UV
    • inflammation- pingueculitis- steroids
  8. What is pterygium?
    • whitish triangular, fibrovascular subepithelial ingrowth od degenerative bulbar conj tissue
    • adjacent to limbus, apex growing toward and onto corne
  9. Sx of pterygium?
    • nasal- light focusing on here due to UV exposure
    • sx: redness, irritation, grittiness, inflammation, astigmatism
  10. tx of pterygium and grading?
    • 1: <2mm on cornea- asympt/inflamm
    • 2: 4mm, tear film disturbances
    • 3: >4 invasion
    • tx: singalsses, tear supps, steroid/non antiinflams
    • surgical
  11. What are concretions?
    • common lesions
    • elderly/chronic meibomian gland disease
    • sx: small, multiple chalky deposits
    • inferior tarsal and fornices
  12. What is conjunctivchalasis?
    • extra fold of conj between globe and lower lid
    • normal aging change- post lid margin disease
  13. What are retention cysts?
    • common lesions
    • asympt
    • thin walled lesion containig clear fluid
    • mayb clusters
  14. Conjunctival naevus?
    • 1-2 decade
    • compound: at junction+ stroma
    • junctional: at junction of epi and subepit
    • subepithelial: beneath epithelium
  15. sx and tx of naevus?
    unilateral, solitary, slightly elevated, pigmented lesion
  16. What is a conjunctival papilloma?
    • sx: pedunculated lesions in children, juxtalimbal, fornix, caruncle
    • proliferation of keratinised, stratifeid squamous epi containig goblet cells
    • tx: resolve, large- excision
  17. What is an epibulbar dermoid?
    • choristoma- normal tissue in wrong placesub/cutaneous tissue
    • childhood, juxtalimbal
  18. What is an epithelial melanosis?
    • Primary: early life then stabilises
    • area of flat, patchy pigmentation scattered about conjunctiva
    • secondary: mascara deposits, pigment clumps
  19. PAM?
    areas of flat patchy pigmentation
  20. OSSN?
    • arise from intraepi neoplasia
    • late in life, juxtalimbal, fleshy avascular mass
    • may become vascualr-> extend onto cornea
  21. Karposi sarcoma?
    • immuno
    • vascular, slow growing
    • lower fornix, re/brown
    • proliferation of vascular endo cells, leukocytes
  22. Conjunctival lymphoma?
    • adult
    • slow
    • salmon coloured
    • b cell lymphomas arise from MALT
  23. Bitot's spot?
    • vit a deficiency- debris dpostisted from keratin secretions
    • appears foam grey spots
  24. agyrosis?
    • silver containing medications
    • slate grey discolouration of mucous membranes

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