Sunglasses are a type of eyewear that are designed to protect your eyes from harmful UV radiation and glare from the sun. They come in a variety of styles, sizes, and colors to suit different preferences and activities.

Polarized sunglasses, on the other hand, are a type of sunglass that have a special filter that blocks glare from horizontal surfaces such as water, snow, or roads. This is achieved through a process where the filter is laminated onto the lens, which allows only vertical light to pass through and eliminates the horizontal light that causes glare. Polarized sunglasses are particularly useful for activities such as fishing, boating, or driving, where the glare from the sun can cause eyestrain and reduce visibility.

It's important to note that not all sunglasses are polarized, so if you're looking for sunglasses that can reduce glare, make sure to check that they have polarized lenses. Additionally, polarized sunglasses may not be suitable for all situations, as they can sometimes affect the visibility of LCD screens, such as those on some instruments or dashboards.