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Quick questions and answers about progressive lenses
Progressive lenses are a type of eyeglass lenses that provide a smooth and seamless progression of several vision correction powers within a single lens. They are also known as no-line bifocals or varifocal lenses.
What are blue lens glasses good for?
In recent years, blue lens glasses have gained popularity for their potential benefits to eye health and overall well-being.
"Blue light science" How to correctly wear anti-blue glasses
What is blue light? The wavelength of visible light is 380-780NM, and that of blue light is 380-50NM, which is one of the shortest wavelength and highest energy.
See far, see close clear - progressive multi-focus glasses know how much
Suitable for the adjustment of the decline, at the same time to see far, fancy or at the same time to see far near different needs of people (especially to see the computer and mobile phone needs), you do not have to frequently pick and wear glasses.
Blue blocking glasses, do you need to wear them?
People often ask if they need to wear a pair of blue-blocking glasses to protect their eyes when looking at their computer, pad or mobile phone. Did myopia laser correct after the operation need to wear anti blue ray glasses to protect the eye?
With progressive multifocal glasses, you must know this!
Progressive lenses, referring to multi-focal lenses, are widely worn in Europe and the United States, but have only become popular in China in the past 10 years. Let's look at a picture of progressive multifocal glasses.
Progressive lens channel selection
The popularity rate of progressive films in developed regions such as Europe and the United States has exceeded 70%, and progressive films account for 30% of the sales volume, with annual sales of about 500 million.
The three major materials of optical lenses
The three major materials of optical lenses: what are the specific differences and advantages and disadvantages of the three popular optical lenses.
Garage custom lens base
Garage custom lens referred to as garage piece, set production. Garage customized lens refers to the product that can not be met by the supply of existing pieces and is used to meet the special needs.
Quick Understanding - How to buy color changing lenses
Color-changing lenses are becoming increasingly popular because they not only provide UV protection, but are also suitable for daily wear.