PPO 5 BIO 1

Card Set Information

Author:
sbkenbs
ID:
191972
Filename:
PPO 5 BIO 1
Updated:
2013-01-09 22:01:41
Tags:
PPO BIO
Folders:

Description:
Binocular indirect opthalmoscopy
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user sbkenbs on FreezingBlue Flashcards. What would you like to do?


  1. Primary function of DFE
    Eval peripheral retina for rhegmatogenous (retinal detachment) conditions

    These are missed w/ direct/indirect monocular
  2. Adv of BIO? 2 main ones
    Quick assessment of ENTIRE retina & vitreous; helpful in pediatric/challenging Pts

    Stereoscopic exam - high resolution, binocular, large FOV, unaffected by Pts refractive error
  3. Disadv. of BIO? 3 main reasons
    • 1)Low mag (SLEx & direct)
    • -3x w/ 20D; not reccommended to move closer to Pt to inc mag

    2) Very bright

    3) Requires dilation
  4. Indications of BIO. 4 main ones
    • Every Pts needs one, esp
    • Flashes/Floaters complaints
    • High Myopia >4.00D
    • Systemic Dz: DM, HTN, Lupus, Sickle Cell Anemia, Sarcoidosis, HIV/AIDs, Cancer
  5. Contraindication of BIO
    Narrow angles due to angular closure 2ndary to pupil dilation.

    Caution w/ Tropicamide. Sensitive Down Syndrome Pts.
  6. Dilation at 4pm Friday?
    Hellz to the NO! danger period is 2-4 hrs and most Ophthalmologist offices are closed.
  7. Dilation of Questionable Angles procedures and cautions
    • Check IOP 45-60mins after instillation.
    • Rise in IOP might be an ascending spike.
    • IOP pressures will be highest at mid-dilation (1-2 hrs post dilation)
  8. Tropicamide. %'s, eye color correction, does what? Generic names.
    • 1% for brown eyes
    • 0.5% for blue/green eyes

    Is an Anticholinergic drug that blocks sphincter mm of iris -> dilation & moderate cycloplegia

    Generic names: Tropicacyl & Spectro-Cyl
  9. Phenylephrine.
    %'s, does what?, Brand names.
    • 2.5% and 10%
    • Sympathomimetic drug for mydriasis & vasoconstrictor

    Brand names: Ak-Dilate, Mydfrin, Neo-synephrine, Neofrin
  10. Name the 3 drugs used for dilation in order.
    • 1) Proparacaine;  anesthetic
    • 2) Phenylephrine 2.5%;  mydriasis/penetration
    • 3) Tropicamide;  disables sphincter
  11. 2.5% Phenylephrine
    Attributes, benefits over 10%
    • 2.5% Phenylephrine HCL is weak and slow-acting mydriatic drug.
    • Does NOT induce blur.
    • Less systemic risk than 10%
    • Cannot be used as a dilator alone.
  12. Side effects of Tropicamide and Phenylephrine

    Head, heart, skin etc etc
    • Trop: Stings
    • Caution w/ overdosing kids
    • OD includes: headache, tachycardia, dry mouth/skin, unusual drowsiness, warm/redness of skin
    • Blurred Vision @ near
    • photophobia

    • Phenylephrine: Dizziness, fast/irregular/pounding heartbeat, inc sweating, inc BP, paleness, trembling
    • High BP b/c vasoconstrictor properties esp for HTN Pts on 10% str. P.
  13. Condensing lens: Increasing dioptic power will?

    What lenses can be used?
    • Inc FOV
    • Dec Mag
    • dec Working Distance

    • 14D, 20D, 25D, 28D, 2.2 pan-retinal
    • 20D is best of both worlds.
    • 2.2pan0retinal is 25.5D, similar to 20D
  14. Mag of condensing lenses
    20D = ?
    30D = ?
    15D = ?
    "2.2" = ?
    • 20D = 3x
    • 30D = 2x
    • 15D = 4x
    • "2.2" (25.5D)= 2.5x
  15. DD (disc Diameter) of 20D Lens w/ BIO?
    DD of direct ophthalmascope?
    • ~8DD BIO
    • ~2DD Direct
  16. When tombonering, dist from lens to examiner is approx...?
    Only works for which part of the retina?
    ...16-20 in"

    Posterior pole & mid-periphery
  17. When examining the retina how many peripheral and posterior views are there?
    8 peripheral, 4 pole
  18. Retina is divided into 3 concentric circles. What are they defined by?
    • Inner = equator (4 vortex veins)
    • Middle = ora serrata
    • Outer = ciliary process

What would you like to do?

Home > Flashcards > Print Preview