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- science help Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears. Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness. Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection for the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation. Glasses are worn for eye protection in some sports, such as squash. Glasses wearers may use a strap to prevent the glasses from falling off during movement or sports. Wearers of glasses that are used only part of the time may have the glasses attached to a cord that goes around their neck, to prevent the loss of the glasses. Martin Nettleton adds: “We invested in the campaign to target those larger installation and distribution companies increasingly dissatisfied with the big fabricators who are starting to compete with them by setting up their own networks of trade counters and distribution outlets. Ms Stephens continues: “The new extension has provided a fantastic and really flexible space that thanks to the new PURe® patio doors and windows, can be enjoyed whatever the weather. It’s great to be able to open up the living space and enjoy the close access we now have to the garden but even when the blustery weather that we are so familiar with here in the Yorkshire Dales takes hold, the glazing has provided us with a peaceful and cosy retreat. It’s the perfect space for both work and relaxation and I couldn’t be happier!”
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