the freedom to move with it.
Lens Options
Lens Materials:
| Material | Pros | Cons |
| Glass | Very Scratch Resistant | Heavy; Longer turnaround time |
| Basic Plastic | Good Optics; Good Basic LensCan be tinted for sunglasses |
Scratches easier than glass; needs UV coating to protect against the sun’s harmful rays; can be thick with high Rx’s |
| Polycarbonate | Thin, light weight; good for kids; Protects against UV |
<2% of population may have issues with chromatic aberration (see rainbows) |
| Mid -Index Plastic | Thinner than polycarbonate; Light weight; inherently protects against UV | Scratches easier than plastic can be tinted (cosmetically or for sunglasses) |
| Hi- Index | Thinner than Mid-Index; Light weight; | Scratches easier than plastic |
| Plastic | Inherently protects against UV | Can be tinted (cosmetically, or for Sunglasses) |
Lens designs / specialty lenses:
| Options | Definition | Pros | Cons |
| Photo chromic (Transitions/ Instashades) | Molecules in the lens that react with UV and darken when you go outside, to have your glasses turn into sunglasses, automatically | convenient pair of sunglasses; cost effective; easy; quick to Darken down |
takes up to 5 min for them to lighten up;not very dark behind car windshield (it’s U.V. protectant) |
| Antireflective Coating | Coating applied to lenses to cut down glare and increase visual acuity (especially under of scratch Low-lighting conditions, and with Certain lens materials) |
help with night-time driving helps with computer glare Lets others see your eyes, rather than seeing your lenses' glare |
coating is put on top coating, so it scratches if you do not clean your glasses properly |
| Polarized Lenses | Specific lenses that have a filter within the lens which reduces glare better than conventional sunglasses. |
Perfect choice for activities where reflective glare is a problem: skiing, fishing driving, boating |
N/A |
| UV Coating | Coating applied to lenses to protect from the sun’s harmful rays: A(aging) & B (burning) | Essentially Clear Coating helps prevent wrinkles and cataract formation | N/A |
| Scratch Resistant coating | Coating applied to lenses to help prevent scratching | N/A | N/A |