TONOMETRY ACTUAL EXAM 2024|VERIFIED EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS ALL GRADED A+|LATEST UPDATE |GUARANTEED SUCCESS
0 view 0 purchase
Course
TONOMETRY
Institution
TONOMETRY
TONOMETRY ACTUAL EXAM 2024|VERIFIED EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS ALL GRADED A+|LATEST UPDATE |GUARANTEED SUCCESS
Define tonometry. - ANSWER-Indirect estimation of IOP from determination of resistance of the globe to deformation by an applied force
Why do we measure IOP? - ANS...
TONOMETRY ACTUAL EXAM
2024|VERIFIED EXAM QUESTIONS
WITH CORRECT DETAILED ANSWERS
ALL GRADED A+|LATEST UPDATE 2024-
2025|GUARANTEED SUCCESS
Define tonometry. - ANSWER-✅Indirect estimation of IOP from determination of
resistance of the globe to deformation by an applied force
Why do we measure IOP? - ANSWER-✅- component of CEE
- provide baseline data for future comparison
- *association btwn IOP & glaucoma*
Explain the physiology of IOP - ANSWER-✅- pressure within eyeball is secondary to
production & drainage of aqueous fluid
- regulation of aqueous production & drainage allows for control of IOP
- aqueous secreted from ciliary processes
Where does aqueous drain from? - ANSWER-✅80-90% through TM
10-20% through uveoscleral outflow
Why is Goldmann performed after slit lamp and before dilation? - ANSWER-✅-
anesthetic softens cornea and applanation slightly distorts cornea & blurs vision
- soft cornea allows for better penetration of dilating agents
How does the applanating probe work in a Goldmann tonometer? - ANSWER-
✅contacts cornea and flattens (applanates) circular area of cornea
fluorescein stained tear layer forced away from cornea and around the area of
applanation--> yellow-green ring
prisms double the image
Why should you avoid pushing the tono probe arm back too forcefully when
inserting into holder? - ANSWER-✅calibration could be affected
,Describe the tonometry probe orientation - ANSWER-✅0 deg or 180 deg should be
aligned at which hash (for most pts)
adjust to red hash if corneal astig > 3D
On the tono measuring drum, 1g equals how many mmHg? Each hash equals how
many mmHg? - ANSWER-✅1 g= 10 mmHg
each hash= 2 mmHg
Where do you preset the measuring drum on the tonometer? - ANSWER-✅8-12
mmHg
What do you soak the tono prob in and for how long? - ANSWER-✅10 min in 3%
H2O2
What can happen if you do not properly rinse your tono probe after soaking? -
ANSWER-✅large chemical burn with epithelial defect (pt shouldn't suffer long term
effects)
What is Tonosafe? - ANSWER-✅disposable tonometer prism; reduces risk of cross
infection btwn patients, but very expensive
What DPAs does Goldmann Tonometry require? - ANSWER-✅*sodium fluorescein*
in combo with an *anesthetic*
What is the most common DPA used for Goldmann tono? What are other DPAs used?
- ANSWER-✅Most common: Fluress (benoxinate/NaFl)
Others:
Fluorocaine (proparacaine/NaFl)
Separate drops of proparacaine & NaFl strip
(NaFl allow for measurement, anesthetic is for pt comfort)
What is the purpose of the sodium fluorescein dye during tono? - ANSWER-
✅defines mire pattern
vital dye staining (penetrates any breaks in cell-cell junctions of epithelial cells prior
to and after tono)
What should be included in patient education? - ANSWER-✅- what test being
performed
- purpose of procedure
- what to expect during procedure
- informed consent
- explain diagnostic agents are administered & potential side-effects
- informed consent for drops
, What is the recommended limit of anesthetic drops? - ANSWER-✅2 drops per half
hour (softens cornea)
What do you do if the fluorescein drains but the anesthetic is still effective? -
ANSWER-✅Instill NaFl strip
Describe the Goldmann illumination and slit lamp set up. - ANSWER-✅*45-60 deg*
angle of illumination
Low mag: *6.3x or 10x*
*max illumination*
- max beam of width and height
- no 10% grey filter
- max setting on rheostat
cobalt blue filter
When do you stop moving the probe towards the pt's eye when looking outside
oculars? - ANSWER-✅2-3 mm from apex of cornea
How can ghost mires aid in applanation? - ANSWER-✅know you're well-centered if
ghost probes aren't centered
What are the requirements for mire alignment? - ANSWER-✅- mire size not too thin
or thick
- mire position centered horizontally & vertically
- End point: inside edge of semicircles JUST touch
(top mire size = bottom mire size)
What do you record if you are between measurements on the drum?? - ANSWER-
✅round up
Explain IOP meaurements. - ANSWER-✅no specific 'safe' number
varies between pt's
pt's history plays a role
10-21 mmHg often quoted as avg range
What are IOP measurements outside normal limits? - ANSWER-✅< 6-8mmHg
> 22mmHg
Asymmetry of >/= 3mmHg between eyes
What do you include for IOP documentation? - ANSWER-✅- DPAs administered &
when
- IOP measurement & time of reading
- tono method (G [Goldmann], NCT, Tonopen, Tactile)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BRILLIANTSCIENTISTS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
