Both polarized and non-polarized glasses have their own features and benefits. The choice between them depends on your personal needs and preferences. Here is a description of each type:
Differences between polarized and non-polarized glasses:
Non-polarized glasses:
Non-polarized glasses are conventional sunglasses that block the intensity of visible light. These glasses reduce overall glare and protect your eyes from the sun's harmful UV rays. They are effective for providing basic protection against sunlight and are suitable for outdoor activities such as walking, running, or driving.
Polarized glasses:
Polarized glasses also block intense light and UV rays like non-polarized glasses, but they offer an additional feature. These glasses have a special filter that reduces glare caused by light reflected off flat surfaces such as water, ice, snow, or asphalt. By eliminating glare, polarized glasses improve visual clarity and increase contrast, which can be especially useful when doing outdoor activities in bright environments or engaging in water sports.
So, in summary, if you often find yourself in environments with intense reflections, such as beaches, lakes, or snow, polarized glasses can be an excellent choice to reduce glare and improve visibility. However, if you only want basic sun protection without worrying about glare, non-polarized glasses may be sufficient. Remember that regardless of the type of glasses you choose, make sure they offer adequate UV protection.
Categories of polarized lenses:
There are different categories of polarized lenses classified according to the amount of light they allow to pass through. The category classification may vary slightly depending on the manufacturer, but the following categories are generally used:
- Category 0: These polarized lenses allow 80-100% of light to pass through. They are suitable for low light conditions, such as cloudy days or dusk. They do not offer intense sun protection and are mainly used for aesthetic purposes or to block blue light in everyday use situations.
- Category 1: These lenses allow 43-80% of light to pass through. They are suitable for moderate light conditions, such as partly cloudy days. They offer mild sun protection and are ideal for outdoor activities in low light environments.
- Category 2: These lenses allow 18-43% of light to pass through. They are suitable for medium light conditions, such as sunny days. They provide moderate sun protection and are suitable for most outdoor activities.
- Category 3: These lenses allow 8-18% of light to pass through. They are suitable for high light conditions, such as very sunny days. They offer strong sun protection and are ideal for outdoor sports like cycling or skiing.
- Category 4: These lenses allow less than 8% of light to pass through. They are suitable for exceptionally bright conditions, such as high mountains or very sunny and reflective environments like water or snow. They provide intense sun protection and are commonly used in high mountain sports.
It is important to note that category 4 polarized glasses are not suitable for driving, as they can be too dark and reduce visibility under normal driving conditions. Additionally, category 4 polarized glasses may have legal restrictions in some countries due to their darkness. Always check local regulations and recommendations before choosing polarized sunglasses.
Would you like to know if your glasses are polarized or not? It’s very simple and fun to check. Watch this video.
