June 20, 2019
Polarized sunglasses are important accessories that reduce glare from reflective surfaces such as the roads, snow, and water. They are popular among people who are involved in outdoor activities such as water sports, jogging, and driving.
Although they are slightly more expensive than their regular counterparts, they are effective in relieving eye discomfort and poor visibility caused by the sun. They contain invisible vertical striping that blocks the horizontal light waves of the sun from entering the eyes.
How do you determine polarized sunglasses? You will need the sunglasses, a clear sunny day, and a flat and highly reflective light surface like a large shiny object, a cement pavement, or a lake. Then, follow these steps:
- Wearing the sunglasses, stare directly at the identified surface. If you find it uncomfortable to withstand the glare for more than a few seconds or if you are squinting while looking at the surface, you are not wearing polarized sunglasses.
- If your lenses are polarized, you should be able to look at the surface for a long period when you place the sunglasses over your eyes and look at the same surface. You should not feel or experience any discomfort as well.
- When you are looking at a surface, determine that glare has been reduced while wearing the sunglasses. If the glare remains, then your sunglasses are just tinted with a darker colour. Polarized sunglasses should be able to eliminate glare as well as haze. If your sunglasses are polarized, you can also experience sharper vision with the surrounding objects appearing in greater details.
Things to Remember:
- Sunglasses that are polarized are ideal for outdoor activities.
- They are not recommended for downhill snow skiing as they reduce the contrast between the snow and ice, which can be dangerous.
- They reduce visibility of LCD displays on electronic devices, resulting to dim or unreadable digital screens.
- They do not block all glares, only those caused by horizontal light waves. If you tilt your head at a 45 degree angle, horizontal light waves can still access your eyes.
- Avoid looking directly at highly reflective surfaces for longer periods of time, especially if you are not wearing proper eye protection.
You may be not sure if the sunglasses you bought is polarized or not. So how will you know? Go to our website to know more how to determine polarized sunglasses.