How to Test Computer Glasses (Clear Glasses)
First, we will show you how to test computer glasses with clear glasses.
1. Ask for Blue Light Glasses Brand Spectrum Report
To find out whether your blue light glasses are the best computer glasses, you should contact the company you bought them from and ask for a spectrum report. It will show you how much blue light your computer glasses can block.
After sending the spectrum report to you, you should make sure that your computer glasses are able to filter at least 30% blue light, otherwise, they are unsafe.
2. Use the Lens Reflection Test
As for how to test computer glasses, you can use the lens reflection test. You can see what color the light is that reflecting off the lenses.
If it reflects the blue light, they are filtering some blue light. If the reflection is violent or purple, the computer glasses may be not effective.
This is a good way for you to perform a blue light test at home.
Wear glasses normally after being fitted with glasses
If you have myopia and have been diagnosed as true myopia at the same time, and the degree is above 0 degrees, you should wear suitable myopia glasses for correction. Once equipped with glasses, you should wear them except for washing your face and sleeping, because myopia patients are in a state of emmetropia after wearing suitable glasses, and the natural relationship between adjustment and convergence is restored. Wearing glasses is not only to improve eyesight, but also to read and work within an appropriate distance, so that there is a normal coordination relationship between the adjustment of the eyes and the convergence function, and to avoid eye fatigue.
Why were eyeglasses invented?
Glasses are commonly used for vision correction, such as reading glasses and myopia glasses, but they are sometimes used for cosmetic purposes if special lenses are not available. Safety glasses provide eye protection for a construction worker or laboratory technician against flying debris. They provide protection against visible and near-visible light or radiation. Sunglasses can improve vision in bright sunlight and can protect your eyes from excessive UV damage. Special glasses can be used to view specific visual information. Sometimes glasses are used purely for fashion or aesthetic purposes. Even eyeglasses used to correct vision come in different kinds of styles, with frames made of plastic, metal, wire, and other materials.
Persol
Founded by Giuseppe Ratti in 1917, Persol is a brand of glasses designed for pilots and race car drivers and is now known for its durable sports sunglasses. Persol is an Italian luxury eyewear brand specializing in the production of sunglasses and frames. It is one of the oldest eyewear companies in the world, originally catering to pilots and sports riders. Currently, the company sells durable sports sunglasses. Currently, all Persol plastic glasses are made in Italy using cellulose acetate. Persol has had an apparent influence in the sunglasses industry. It was Persol who pioneered the development of elastic frames.
How to buy plano lens?
You had better not buy off-the-shelf plano lens, buy by fixed matching, just like matching with myopic glasses. The price is much more expensive than the finished product. However, the quality of the finished glasses is not guaranteed, and the materials are also poor, which is not only not helpful to you, but harmful for a long time. There is no essential difference between degrees and workmanship technology for the lenses, what should choose is the brand lens film of the lens, and the transmittance of the lens, and the design technology of the lens, to buy a good lens (including smooth lens).
Loch Eyewear
Loch Eyewear, a Canadian company, makes prescription glasses and sunglasses from 500-year-old North American wood and plant-based plastic frames. Their glasses are made in Canada and feature high definition, durable, anti-glare polycarbonate lenses. Loch Eyewear provides a home trial program that allows customers to try three frames at home for three days with free shipping in both directions. If you like a pair of glasses, they'll put the lenses inside them and send them back to you.
How to know if lens is polarized?
Make use of LCD screens. Point the glasses horizontally at the LCD screen and then rotate them upward by 45 degrees clockwise. If it is a polarized lens, it will show a change in color deepening. If it does not change no matter how you rotate it, it is not a polarized lens. You can borrow another person's polarized lens or have previously worn a known true polarizer, and place it crossover with the new glasses you want to buy. At this time, you should see the object clearly from the crossover part with your eyes. Then cross the glasses vertically and horizontally, and at this point, the opposite object should not be visible from the intersection. If this condition is satisfied, it means that a true polarized lens is being tested.
