NAO TEST 4 QUESTIONS AND ANSWERS | LATEST VERSION | 2024/2025 | 100% PASS
6 views 0 purchase
Module
NAO
Institution
NAO
NAO TEST 4 QUESTIONS AND
ANSWERS | LATEST VERSION |
2024/2025 | 100% PASS
What does "prism" in lenses achieve in vision correction?
Prism in lenses redirects light to assist with alignment issues in the eyes, helping with double
vision.
How does the base direction of a prism impact vision...
NAO TEST 4 QUESTIONS AND
ANSWERS | LATEST VERSION |
2024/2025 | 100% PASS
What does "prism" in lenses achieve in vision correction?
✔✔Prism in lenses redirects light to assist with alignment issues in the eyes, helping with double
vision.
How does the base direction of a prism impact vision?
✔✔The base direction of a prism determines where the image shifts, guiding the eyes to work
together more effectively.
What is "decentration" in lens fitting?
✔✔Decentration is the process of adjusting a lens so that its optical center aligns with the pupil,
optimizing vision clarity.
Define the term "inter-pupillary distance."
✔✔Inter-pupillary distance (PD) is the distance between the centers of the pupils, crucial for
positioning lenses correctly.
1
,Why is "lens thickness" important in prescription glasses?
✔✔Lens thickness affects both weight and appearance; thicker lenses are more noticeable and
can make glasses heavier.
What is the purpose of "anti-reflective coating" on lenses?
✔✔Anti-reflective coating reduces glare and reflections, improving clarity and comfort,
especially in low-light conditions.
Explain the concept of "near-sighted" versus "far-sighted" lens prescriptions.
✔✔Near-sighted lenses are concave, correcting close-up focus issues, while far-sighted lenses
are convex to help with distance vision.
What is "base curve" in the context of lens design?
✔✔The base curve is the curvature of the front surface of a lens, influencing vision clarity and
compatibility with frames.
How is "lens power" measured and recorded in prescriptions?
✔✔Lens power is measured in diopters, indicating the corrective strength needed to focus light
properly on the retina.
2
, What is the role of a "fitting cross" in progressive lenses?
✔✔The fitting cross marks where the wearer’s pupil aligns with the lens, guiding the optimal
positioning of progressive lenses.
Why might a patient require "aspheric lenses"?
✔✔Aspheric lenses are designed to be thinner and lighter, reducing distortion and improving
aesthetics for stronger prescriptions.
What is "photochromic lens" technology?
✔✔Photochromic lenses darken in sunlight and return to clear indoors, providing convenience
and protection from UV rays.
What is the importance of "vertex distance" in lens fitting?
✔✔Vertex distance is the space between the lens and the eye; it affects lens power, especially in
higher prescriptions.
What does "optical center" mean in eyeglass lenses?
3
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 SterlingScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.49. You're not tied to anything after your purchase.
