Exam (elaborations)
ABO Exam_ Prism Questions with correct answers
ABO Exam_ Prism Questions with correct answers
[Show more]
Content preview
ABO Exam: PrismLooking below the optical center of the following lens would create what type of
prism?-1.00 +2.00 X30 - CORRECT ANSWER-base up
+4.50 +0.50 X180+2.00 +0.25 X090ADD +1.75What is the vertical imbalance at
a 10mm reading level? - CORRECT ANSWER-3.0 prism diopters
+2.50 -0.50 X180+2.50 sphPD 67Optical centers are placed 63mm apart. How
much total prism will this produce, and in which direction is the base? -
CORRECT ANSWER-1.0 prism diopters base in
If the RX-3.00 +0.50 x090 is decentered out 2mm too much, how much prism will
be created and in which direction is the base? - CORRECT ANSWER-0.50 prism
diopters base in
What is the vertical imbalance of the following RX at the reading level of
10mm?-1.50 -1.00 x090-4.00 -1.00 x120+3.00 ADD - CORRECT ANSWER-2.75
prism diopters
What is the image jump if the patient is wearing a flat top 25 segment?-1.50 -1.00
x090-4.00 -1.00 x120+3.00 ADD - CORRECT ANSWER-1.5 prism diopters
When prism is prescribed to correct a muscle imbalance, where is the base
placed? - CORRECT ANSWER-Over the weak muscle
A -5.00 D lens decentered in 4mm produces - CORRECT ANSWER-2.0 base out
Excessive base up prism - CORRECT ANSWER-makes people feel like they are
walking downhill
The regular slab off grinds prism in which direction in the lens? - CORRECT
ANSWER-up
The most commonly used prescription for correcting muscle imbalance in
esotropia - CORRECT ANSWER-base out prism
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 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 EXAMQA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.37. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now