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Six Types of Sunglasses You Should Never Use

Six Types of Sunglasses You Should Never Use

Sunglasses are a protective shield for your eyes. It protects the eyes from dust, dirt and harmful sun rays. Mostly they are worn because they keep the eyes safe from the adverse effects of the sun. The labels present on the sunglasses often mention that they provide protection from natural radiation as well as the ultraviolet light. You can choose designer sunglasses to make sure that you are buying the best quality glasses.

Keeping the eyes safe from any light that is harmful is critical for healthy eyes. Given below are some of the important features of good sunglasses. Never buy sunglasses that:

1. Cannot Block Majority of the Ultraviolet Rays

Always buy the sunglasses that have the ability to block at least ninety-nine percent of the harmful rays. If the eyes are exposed to the UV rays for a long time. It can cause diseases such as eye cataracts and eye growths. It can also become the cause of cancer. The UVB lights are considered extremely dangerous for the eyes and skin as compared to the UVA radiation.

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If you are using plastic or glass lenses, then keep in mind that they absorb some UV light. Manufacturers can improve the absorption of these lights by adding chemicals to the material of lens during the manufacturing. They can also improve the quality by applying special coatings of a lens. To make sure that the sunglass can block the harmful rays, check whether its label says its UV absorption is up to 400nm. This means that they have the ability to absorb hundred percent UV absorption.

2. Not Polished and Ground

The quality of some nonprescription glasses can be improved through polishing and grounding.

To check the quality of sunglasses, you should look for something that has a rectangular pattern. Hold the glasses at a safe distance and close one eye. Move the glass side by side then up and down slowly. If the lines are straight, then the quality of sunglasses is good. If you can see the lines wiggling then, it means that they are not of high quality.

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3. Not Resistant to Impact

It is essential for all the sunglasses to fulfill the demands of the Federal Food and Drug Administration. This is an important practice to assess their safety.

All the lens are breakable, but the lens made up of plastic are difficult to break as compared to the glass lens. The nonprescription lens are mostly made up of plastic. In sports, people often use sunglasses which have a lens made up of polycarbonate plastic. It is better to the polycarbonate lens that also has a scratch resistant coating.

4. Not Polarized

Buying polarized lens is an excellent choice because it helps in cutting the glare. Sunlight that reflects from smooth surfaces such as car windows, water, pavement, etc. is harmful. The polarized lens can help in the prevention of any damage because of reflected glare and are very helpful while driving.

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There is no connection between this lens and absorption of UV light, but now they are combined with a surface that can block UV light. You should always check the label to make sure that it can provide maximum protection against UV.

5. Not Photochromic

It is a lens that can automatically darken when in bright light and vice versa. They mostly come in a gradient tint or a uniform one.

These lenses are excellent when it comes to the absorption of UV light. You can check the label to make sure that they have the ability to provide perfect protection against harmful rays. They can take some time to adjust to different conditions of light.

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6. Gradient v/s Double Gradient Lens

They have a permanent shade from top to the bottom or a shade from the upper and lower that goes towards the middle. A single gradient lens can decrease glare from the sky and allows you to see below clearly. They are not suitable for wearing in snow or at the beach.

Gradient lenses are good for driving as they shield your eyes from overhead sunlight and allow more light through the bottom half of the lens. Double gradient lenses are not suitable for driving because they do not provide a clear view of a dashboard. A double gradient is a good option for wearing during sports where the light reflects off water or snow.

Look for these features while buying sunglasses and your eyes will be safe from any harmful sun rays and they will stay healthy.

Featured photo credit: Adore The Life via adorethelife.com

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Last Updated on November 11, 2019

How to Improve Memory and Boost Your Brainpower

How to Improve Memory and Boost Your Brainpower

Have you ever noticed that some people are able to effortlessly remember even the most mundane details and quickly comprehend new things? Well, you can too!

To unlock the full potential of your brain, you need to keep it active and acute. Wasting time on your couch watching mindless television shows or scrolling through facebook is not going to help.

Besides getting out flashcards, what can you do to help remember things better and learn new things more quickly? Check out these 10 effective ways on how to improve memory:

1. Exercise and Get Your Body Moving

Exercising doesn’t just exercise the body, it also helps to exercise your brain. Obesity and the myriad of diseases that eventually set in as a result of being overweight can cause serious harm to the brain.

Furthermore, without regular exercise, plaque starts to build up in your arteries, and your blood vessels begin to lose the ability to effectively pump blood. Plaque buildup leads to heart attacks and it also reduces the amount of oxygen and nutrients that your blood carries to your brain. When the nutrients don’t make it there, the brain’s ability to function is compromised.

To prevent this from happening, make sure you get moving every day. Even if it’s just a brisk walk, it’ll help you maintain and increase your mental acuity. Brisk walking, swimming and dancing are all excellent activities. Take a look at these 5 Ways to Find Time for Exercise.

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2. Eliminate Stressors and Seek Help If You’re Depressed

Anything that causes you major stress, like anger or anxiety, will in time begin to eat away the parts of your brain that are responsible for memory. Amongst the most brain-damaging stressors is depression, which is actually often misdiagnosed a a memory problem since one of its primary symptoms is the inability to concentrate.

If you can’t concentrate, then you might feel like you are constantly forgetting things. Depression increases the levels of cortisol in your bloodstream which elevates the cortisol levels in the brain. Doctors have found that increased cortisol diminishes certain areas of the brain, especially the hippocampus which is where short-term memories are stored.

Prolonged depression can thus destroy your brain’s ability to remember anything new. Seek professional help to combat your depression – your brain will thank you.

3. Get a Good Night’s Sleep and Take Naps

Getting a consistent 7 to 8 hours of sleep each night will increase your memory. During sleep, the brain firms up memories of recently acquired information.

Getting enough sleep will help you get through the full spectrum of nocturnal cycles that are essential to optimal brain and body functioning during the waking hours. Taking a nap throughout the day, especially after learning something new, can also help you to retain those memories as well as recharge your brain and keep it sharper longer.

4. Feed Your Brain

Fifty to sixty percent of the brain’s overall weight is pure fat, which is used to insulate its billions of nerve cells. The better insulated a cell is, the faster it can send messages and the quicker you will be thinking.

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This is precisely why parents are advised to feed their young children whole milk and to restrict dieting – their brains’ need fat to grow and work properly. Skimping on fats can be devastating even to the adult brain.

Thus, eating foods that contain a healthy mix of fats is vital for long-term memory. Some excellent food choices include fish (especially anchovies, mackerel and wild salmon) and dark leafy green vegetables. Here’re more brain food choices: 12 Foods that Can Improve Your Brain Power

Deep-fried foods obviously contain fat but their lack of nutritional value is not going to help your brain or your body, so think healthy foods and fats.

5. Eat Breakfast and Make Sure It Includes an Egg

According to Larry McCleary, M.D., author of  The Brain Trust Program, an egg is the ideal breakfast. Eggs contain B vitamins which help nerve cells to burn glucose, antioxidants that protect neurons against damage; and omega-3 fatty acids that keep nerve cells firing at optimal speed.

Other foods to add to your breakfast include fruits, veggies and lean proteins. Avoid trans fats and high fructose corn syrup. Trans fats diminish the brain cells’ ability to communicate with each other and HFCS can actually shrink the brain by damaging cells.

Having a healthy breakfast in the morning has been shown to improve performance throughout the day. If you’re too busy to have a healthy breakfast, this maybe just right for you: 33 Quick And Healthy Breakfasts For Busy Mornings

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6. Write it Down

If there’s something you want to remember, writing it down can help.

It may sound like a no-brainer, but do you really know why? Writing it down creates oxygenated blood flow to areas of your brain that a responsible for your memories and literally exercises those parts of it. Here’s How Writing Things Down Can Change Your Life.

You can start a journal, write yourself emails or even start keeping a blog – all of these activities will help to improve your capacity to remember and memorize information.

7. Listen to Music

Research shows that certain types of music are very helpful in recalling memories. Information that is learned while listening to a particular song or collection can often be recalled by thinking of the song or “playing” it mentally. Songs and music can serve as cues for pulling up particular memories.

8. Visual Concepts

In order to remember things, many people need to visualize the information they are studying.

Pay attention to photographers, charts and other graphics that might appear in your textbook; or if you’re not studying a book, try to pull up a mental image of what it is you are trying to remember. It might also help to draw your own charts or figures, or utilize colors and highlighters to group related ideas in your notes.

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Here, you can learn How to Become a Person Who Can Visualize Results.

9. Teach Someone Else

Reading material out loud has been shown to significantly improve memory of the material. Expanding further upon this idea is the fact that psychologists and educators have found that by having students teach new concepts to others, it helps to enhance understanding and recall.

Teach new concepts and information to a friend or study partner, and you’ll find you remember the information a lot better.

10. Do Crossword Puzzles, Read or Play Cards

Studies have shown that doing crossword puzzles, read or play cards on a daily basis not only keep your brain active but also help to delay memory loss, especially in those who develop dementia.

So pick up the daily newspaper and work on that crossword puzzle, read a book or enjoy a game of solitaire.

Pick one to two of these tips first and start applying them to your everyday life. Very soon you’ll find yourself having better memories and a clearer head!

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Featured photo credit: Pexels via pexels.com

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