1. Why is titanium more expensive than other metals?
Titanium is highly valued because it's both strong and lightweight, and people are not usually allergic to it.
2. What exactly is zyl?
Zyl is actually cellulose acetate (commonly called just "acetate"); it's a type of plastic.
3. Why people who have bifocal eyeglasses have problems seeing computer?
People who have bifocals have both near and far vision corrected, but not intermediate, which is exactly where a computer monitor sits.
4. Who must wear safety glasses?
Anyone who works with power tools, welds or performs any other activity in which something could fly into the eye.
5. What benefits offer progressive lenses versus bifocals?
Progressives have a smooth progression of optical power, enabling you to see at intermediate distances as well as near and far. Another advantage is that they don't have bifocal lines, which can be unattractive and a telltale sign of age!
6. What is PD?
PD is a distance between the centers of the pupils.
7. What are high index lenses are?
They get rid of the hated "Coke-bottle" appearance, and they're also lighter to wear. No more sore nose!
8. What are photocromic lenses?
Photochromic lenses automatically darken when you go outdoors and return to normal when you go back in. Think they don't work quickly enough? Actually, today's photochromic lenses are way faster than the ones from years back.
9. What is polycarbonate?
It is an extremely impact-resistant material, so it's ideal for sports and for kids' eyeglasses.
10. What is AR?
AR is Antireflective coating that helps you to see through the lenses better and keeps glare from obscuring your beautiful eyes from others.
11. What is a mirror coating?
Fashionable mirror coating comes in many colors and prevents people from seeing your eyes.
12. What is the biggest misunderstanding about scratch resistant coating?
Most people interpret scratch resistant coating as scratch proof coating. A scratch resistant coating resist the scratches to appear on lenses under normal wear. Nothing is scratch proof. It is possible to scratch a diamond with… another diamond.
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