COT Exam UPDATED Actual Exam Questions and CORRECT Answers
5 views 0 purchase
Course
COT
Institution
COT
COT Exam UPDATED Actual Exam
Questions and CORRECT Answers
Due to refraction a prism bends light rays toward the ___________of the prism? - CORRECT
ANSWER- Base
What is P=C/D ? - CORRECT ANSWER- P = Prism
C = the displacement of the object in cm
D = the distance between the prism and the v...
COT Exam UPDATED Actual Exam
Questions and CORRECT Answers
Due to refraction a prism bends light rays toward the ___________of the prism? - CORRECT
ANSWER✔✔- Base
What is P=C/D ? - CORRECT ANSWER✔✔- P = Prism
C = the displacement of the object in cm
D = the distance between the prism and the virtual
image in meters
This formula explains the relationship between the power of prism and the ability to bend
light.
Two Prisims base-to-base form what type of lens? - CORRECT ANSWER✔✔- Plus
or
Convex
Convex lenses do what to light rays? - CORRECT ANSWER✔✔- Converge them
Two prisms placed apex-to-apex for what kind of lens? - CORRECT ANSWER✔✔- Minus
or
Concave
What is Prentice's Rule? - CORRECT ANSWER✔✔- A rule to calculate induced prism in
glasses whose optical centers have been decentered.
Induced prism=lens power (in D) X Optical center displacment (in cm)
Cinically, Infinity is determined to be at what distance? - CORRECT ANSWER✔✔- 20 feet
(6 meters)
, Explain Amplitude of Accommodation - CORRECT ANSWER✔✔- its the Lens's change (in
diopters) from a state of no accommodation to maximum accommodation
What does Prince's Rule measure? - CORRECT ANSWER✔✔- near point of
accommodation, and bifocal and trifocal add power
what is the focal length (in meters) of a 3 diopter lens? - CORRECT ANSWER✔✔- P=1/f
3=1/f
3f=1
f=1/3 or 33 cm
Snell's Law determines what - CORRECT ANSWER✔✔- whether the refacted ray will bent
toward the normal or away from it
Index of Refraction (IR) compares what? - CORRECT ANSWER✔✔- Speed of light in a
vacuum to the speed of light in a given substance
What is the IR of Water?
What is the IR of Crown Glass? - CORRECT ANSWER✔✔- Water is 1.33
Crown Glass in 1.517
What is axial length? - CORRECT ANSWER✔✔- The length of the eye from the front
surface of the central cornea to the macula
With the rule astigmatism is at what axis? - CORRECT ANSWER✔✔- 90
Against the Rule astigmatism is at what axis? - CORRECT ANSWER✔✔- 180
Hirschberg Test - CORRECT ANSWER✔✔- uses corneal light reflexes to determine
anestimation of misalignment
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 MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.