Here is a list of frequently asked questions (FAQs). If you need any information beyond this – do not hesitate to contact us!

Have the glasses by Filtral the same quality as eyewear from opticians?

Our lenses feature the "Optical class 1" and thus are of the highest quality. Both the lenses and the frame are subject to constant quality controls by regulated standards.

Our sunglasses are manufactured after sunglasses standard DIN EN 12312-1:2015-12 and our reading glasses after reading glasses standard DIN EN 14139:2010. We use high quality, tested for compatibility materials and rely also on known substances from the the sports field such as lenses and frame made of polycarbonate (PC).

Are the Filtral glasses tested?

Both the lenses and the frame are subject to constant quality controls by regulated standards. According to our standards, we also conduct both physical tests and chemical tests on all our products.

Do glasses by Filtral bear the CE mark?

All of our products carry a CE mark. With this marking, the manufacturer declares in accordance with EU regulation 765/2008 - "that the product conforms to the applicable requirements, which are set out in the Community harmonization legislation providing for its affixing."

Where can I purchase Filtral eyewear?

You can order our sunglasses and reading glasses via our Online Shop. As a trading partner please visit our "Trade" area.

What is meant by "cut lenses"?

The concept of "ground lenses" comes from the optics. Optical glasses consists of lenses, which have a refracting effect as polished lenses and thus serve as a visual aid. Such optical lenses we have for reading glasses - but not for sunglasses.

Have both reading glasses and sunglasses by Filtral UV protection?

All our sunglasses come with 100% UV protection. This means that all UVA and UVB and the dangerous UVC is filtered out by the lenses. In addition to 100% protection against UVA and UVB rays, the eyes are protected from the high-energy photons in the visible violet-blue range of the sunlight through our sunglasses by Filtral. Reading glasses have no UV protection.

How to care for and clean my glasses by Filtral?

Make sure that the glasses are stored with the glass side up to a suitable and fixed location so that they are stored safely and close at hand. For storage, get yourself a practical glasses case. Avoid exposing the glasses to extreme temperatures, such as e.g. quickly on the shelf in the car right under the windshield.

Clean the lenses with a soft cloth, preferably with a lens cloth made from microfiber. Do not use paper towels because they will scratch the lenses. Wash your glasses in warm water with mild soap and pat the glasses dry with a soft, lint-free cloth.

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