Category 4 sunglasses feature the darkest lenses available under ISO standards. They are perfect for use in extreme sun conditions whilst being ideal for people with eye conditions that make them sensitive to light.
What are Level 4 sunglasses?
What are category 4 sunglasses? These are the darkest sun lenses. Because they absorb so much visible light, they’re illegal to wear for driving. Generally, these lenses are only suitable for extreme exposure scenarios such as high-altitude mountaineering.
What category sunglasses is best?
Category 2 lenses are the most common you will find in sunglasses. They provide good protection from UV rays but don’t have as dark a tint as the category 3 and 4 lenses. Category 3 lenses provide extra protection from UV light and will block out the majority of visible light to protect your eyes.
What are Level 3 sunglasses?
| Lens category | Description |
|---|---|
| Lens category 3: General purpose sunglasses | These provide high protection against sunglare and good UV protection, they are not suitable for driving at night or under dull light conditions. |
What is a Category 3 sunglass lens?
Lens category 3: Sunglasses – These sunglasses provide a high level of sun glare reduction and good UV protection. Lens category 4: Sunglasses – These are special purpose sunglasses that provide a very high level of sun glare reduction and good UV protection.
Does UV 400 block blue light?
These hardworking shades have a unique blue- or yellow-tinted lens that helps filter out damaging blue light from all of your screens. As a result, they help reduce digital eye strain, sleep disruption, and possibly the risk of macular degeneration.
Can you drive in Category 3 sunglasses?
Sunglasses with category 3 lenses are best for daytime driving conditions — any higher is considered too dark to drive safely. … These range from polarising lenses to tints that help to improve contrast perception. Learn more about UV protection and sunglasses categories here.
What does Category 3 UV protection mean?
‘Lens category 3: sunglasses‘ provide a good level of UV protection and a high level of sun glare reduction. ‘Lens category 4: sunglasses’ are special purpose sunglasses that provide a very high level of sun glare reduction and good UV protection.
Are polarized sunglasses better?
Polarized lenses are a great option for anyone who is spending a lot of time outdoors. Not only do they reduce bright reflection and unwanted glare, polarized lenses also help improve vision clarity in bright situations. Remember, polarized sunglasses won’t protect you from staring directly at the sun.
How do you know what category sunglasses are?
The category of a pair of sunglasses simply refers to how dark (or dense) the lenses are. These range from 0 to 4, with 0 being the lightest shade and 4 being the darkest: Category 0 — clear or very light lenses for fashion and indoor use. Category 1 — pale lenses for overcast days.
What is UV filter category 2?
| Filter category | Suitability |
|---|---|
| 1 | Suitable for cloudy days |
| 2 | Suitable for summer days in the British climate |
| 3 | Suitable in snow, mountains and at the sea in southern Europe |
| 4 | Suitable on high mountains and glaciers. Not to be worn while driving! |
How do I choose sunglasses?
- Don’t settle for less than 100% …
- Darker sunglasses don’t always mean they offer more UV protection. …
- Polarized lenses reduce glare, but don’t block UV rays. …
- Do a lens quality check. …
- Size does matter. …
- Color doesn’t matter. …
- Think of impact protection when buying sunglasses.
Are there different levels of polarized sunglasses?
It’s an impact-resistant material, and it’s more scratch resistant than the [laminated lenses]. The film is put into a mold and they inject the polycarbonate material around it. That makes for a good strong lense, but it’s not a clear lens to look through. It can cause distortion in the polarized film.
Are Category 2 sunglasses OK?
When buying sunglasses, look for a lens category of at least 2 or preferably 3. … Lens category 2: Sunglasses These sunglasses provide a medium level of sun glare reduction and good UV protection. Lens category 3: Sunglasses These sunglasses provide a high level of sun glare reduction and good level of UV protection.