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NAO Book 1 Questions and Answers | Latest Update | 2024/2025 | Already Passed What is the role of an optician in eye care? An optician assists patients in selecting and fitting eyeglasses and contact lenses, ensuring they meet the prescription and style preferences. Describe the process...

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  • November 4, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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NAO Book 1 Questions and Answers |
Latest Update | 2024/2025 | Already
Passed
What is the role of an optician in eye care?


✔✔An optician assists patients in selecting and fitting eyeglasses and contact lenses, ensuring

they meet the prescription and style preferences.




Describe the process of fitting a pair of glasses.


✔✔Fitting glasses involves measuring the distance between the patient’s pupils, adjusting the

frame to match facial contours, and ensuring the lenses align properly with the eyes.




What is the purpose of the pupillary distance measurement?


✔✔Pupillary distance measurement ensures that the lenses are aligned with the center of each

pupil, optimizing vision and comfort.




How does a progressive lens differ from a bifocal lens?


✔✔A progressive lens provides a seamless transition from distance to near vision without visible

lines, unlike a bifocal lens which has distinct sections for each.




1

,Explain the term “base curve” in lenses.


✔✔The base curve refers to the front curvature of the lens, influencing the optical quality and

how the lens fits into a frame.




What are anti-reflective coatings, and why are they recommended?


✔✔Anti-reflective coatings reduce glare and reflections, enhancing visual clarity and making

lenses more comfortable, especially for nighttime or screen use.




What is the function of polycarbonate lenses?


✔✔Polycarbonate lenses are impact-resistant, lightweight, and provide UV protection, making

them ideal for sports and safety eyewear.




Why is lens thickness important for high-prescription lenses?


✔✔Thinner lenses reduce weight and bulk, improving appearance and comfort, especially in

high prescriptions where thick lenses can distort vision.




What factors should be considered when selecting a frame for a patient?


✔✔Frame selection should consider face shape, prescription strength, lifestyle needs, and

personal style to ensure comfort and aesthetic appeal.

2

, Explain the difference between single vision and multifocal lenses.


✔✔Single vision lenses correct one field of vision, either near or far, while multifocal lenses

have multiple zones to correct near, intermediate, and distance vision.




How can opticians help reduce lens scratches?


✔✔Opticians recommend scratch-resistant coatings and proper cleaning practices to protect

lenses from scratches, extending their life.




What is the main purpose of a blue light filter on lenses?


✔✔Blue light filters reduce exposure to blue light from screens, helping to prevent digital eye

strain and promote better sleep.




Define prism correction in eyeglasses.


✔✔Prism correction realigns the image seen by the eyes, often used to treat double vision by

shifting the image to help both eyes work together.




Why might a patient require aspheric lenses?




3

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