Glasses Quiz
Questions: 16 · 10 minutes
1. A prescription includes CYL and AXIS values. What do these values describe together?
The amount and placement of prism correction
The difference between distance and reading power
The horizontal and vertical positions of each pupil
The amount and orientation of astigmatism correction
2. Which label is the best evidence that sunglasses provide broad ultraviolet protection?
UV400 or 99–100% UVA and UVB protection
Dark smoke tint
Polarized lenses
Premium mirrored finish
3. Which lens design provides distance, intermediate, and near correction without a visible dividing line?
Single-vision lenses
Standard lined bifocals
Progressive lenses
Plano polarized lenses
4. Photochromic lenses darken outdoors but remain relatively light inside many cars. What is the main reason?
The car's ventilation prevents the lenses from reaching the correct temperature
The windshield blocks much of the ultraviolet light that activates many photochromic lenses
The polarization of the windshield cancels the lens reaction
The lenses require direct contact with outdoor air to darken
5. When checking a frame's overall width, which sign usually indicates a suitable fit?
The lower rims press against the cheeks in a neutral expression
The pupils sit close to the inner edges of both lenses
The bridge rests only along its uppermost edge
The temples travel back without strongly bowing outward, and the frame does not pinch
6. For an active child who needs prescription glasses, which lens materials are commonly considered because of their impact resistance?
Standard CR-39 plastic or crown glass
Polycarbonate or Trivex
Crown glass or mineral high-index glass
Standard glass or uncoated acrylic
7. On an eyeglass prescription, what does the SPH value primarily describe?
The orientation of astigmatism correction
The distance between the centers of the pupils
The main lens power used to correct nearsightedness or farsightedness
The additional power reserved for near viewing
8. Someone has a strong minus prescription and wants to reduce the appearance of thick lens edges. Which frame choice generally helps most?
A smaller, rounder frame that keeps the eyes near the lens centers
An oversized rectangular frame with wide outer corners
A very wide rimless frame extending beyond the face
A large aviator frame in which the eyes sit near the top
9. Why is pupillary distance, or PD, used when making prescription glasses?
To align the optical centers of the lenses with the wearer's pupils
To calculate how high the temples should sit above the ears
To select the most suitable lens material for the prescription
To determine the ideal total width of the frame
10. A wearer's frames sit too low and touch their cheeks. Which feature offers the most direct way to customize how the bridge sits?
Spring hinges at the temples
A decorative double bridge
Extra-thick temple tips
Adjustable nose pads
11. Which method is generally best for routine cleaning of ordinary coated eyeglass lenses?
Rinsing with lukewarm water, using a little lotion-free dish soap, and drying with a clean microfiber cloth
Rinsing them in hot water and drying them with a paper towel
Wiping them dry with a clean cotton shirt
Polishing them with a dry facial tissue whenever dust appears
12. An office worker is bothered by reflections visible on their lenses during video calls and under overhead lights. Which option addresses this most directly?
A scratch-resistant treatment
A photochromic treatment
An anti-reflective coating
Polarized lenses
13. A person wants sunglasses that reduce reflected glare from water and flat road surfaces. Which feature is designed for that purpose?
A darker cosmetic tint
Polarization
A high-index lens material
A mirrored outer finish
14. A plastic frame becomes warped after being left on a hot car dashboard. What is the safest next step?
Bend it back immediately while the material is still warm
Have an eyewear professional inspect and adjust it
Keep wearing it until normal use gradually restores its shape
Immerse it in boiling water to soften the entire frame evenly
15. On a multifocal prescription, what does ADD usually indicate?
The degree at which cylinder correction is positioned
The thickness added to protect the lens edge
The amount of prism needed to align the eyes
The additional plus power used for near viewing
16. A frame keeps sliding down even after its temples have been properly adjusted. Which fit issue should be checked first?
Whether the lenses use a sufficiently high refractive index
Whether the frame front is the same width as the wearer's eyebrows
Whether the bridge width and shape match the wearer's nose
Whether the frame shape contrasts with the wearer's face shape