Gonio

Card Set Information

Author:
ijesc
ID:
286291
Filename:
Gonio
Updated:
2014-10-20 05:31:46
Tags:
OPTM
Folders:
OPTM
Description:
OPTM
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  1. gonio allows for _____ view of angle
    direct
  2. contraindications of gonio
    • hyphaema
    • lacerated/perforated globe
    • recent ocular surgery
  3. perform gonio with caution
    • corneal/conj abrasion, inflammation or infection
    • recurrent corneal erosion syndrome
    • recent ocular trauma
  4. limitations of gonio
    • needs experience
    • positioning of lens
    • px line of gaze
    • pupil dia variations
    • differences in grading schemes used
  5. alternate non invasive techniques to gonio
    • gonio is gold standard
    • ultrasonic biomic
    • scheimflug imaging
    • OCT
  6. aq hum
    • secreted into post ch
    • circulates via pupil into ant ch
    • AH turnover ~2hrs
  7. 6 layers seen in gonio
    • schwalbes line
    • TM
    • canal of schlemm
    • SS
    • CB
    • iris
  8. schwalbes line
    • if pigmented = sampolesis line
    • most ant structure
    • termination of dece membr
    • line becomes 'dusted' with age
  9. TM
    • non pig = ANT
    • pig = post
    • effect greater with age + in inf
  10. schlemm canal
    • typically NOT visible
    • only seen if canal contains blood
  11. SS
    • light coloured landmark - defined
    • pt of attachment of CB to sclera (TM attaches ant, CB post)
    • if not seen, angle closure!!
    • if unusually wide, indicator for angle recession
    • iris processes and peripheral ant synechiae may cover SS

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