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Polarizers are manufactured according to the principle of polarization of light. We know that when the sun shines on the road or water, it directly stimulates the eyes, making the eyes feel dazzling, fatigued, and unable to see objects for a long time. Especially when you are driving a car and engaging in outdoor recreational activities, it will not only affect our work and entertainment mood, but even affect our...

Cycling glasses are one of the common tools for cycling enthusiasts. They can protect the eyes of cyclists and play the role of anti-collision, anti-ultraviolet, wind and sand protection. Unlike sunglasses, cycling glasses are more professional in design and safer to ride with road cycling glasses. Cycling glasses on the market are generally divided into two types: color-changing cycling glasses and polarized cycling glasses. So is the color-changing or polarized...

What are blue light blocking glasses? Blue light blocking glasses are glasses with blue light blocking function. Anti-blue light glasses can prevent blue light from irritating the eyes, special anti-blue light glasses can effectively isolate radiation and ultraviolet rays, and can filter out blue light, suitable for use when watching mobile phones, TVs, and computers. Anti-blue light glasses mainly reflect harmful blue light through the coating on the lens surface,...

In the hot summer, are you troubled by the dazzling light that makes you unable to open your eyes? When we go on vacation at the seaside or ski in the snow, we all feel that the light is strong and dazzling, and we need sunglasses to protect our glasses. So are your sunglasses right? When we buy sunglasses, we should observe whether the color of the object changes when...

There is a conversion formula for the degree of frame lenses and contact lenses: Fo=Fs/(1-dFs) Fo: contact lens prescription; Fs: prescription of frame lens; d: distance between frame lens and cornea   For example: the degree of the frame lens is -4.00D, and the distance between the frame and the contact lens is 12 mm, then the degree of the contact lens can be converted into Fo=4.00D/ [1-0.012 (-4.00)]=-3.82D, can...

Right optometry Optometry should be done before glasses are fitted. Optometry is the premise of matching glasses and should not be purchased blindly. To find a good or reputable optical shop for optometry, it is best for children to go to the hospital for dilated optometry after being checked by an ophthalmologist for the first time.   Frame selection The material of the spectacle frame should be light, tough, firm,...

Glasses storage Wrap the lenses with glasses cloth, then close the left frame, and then close the right frame. In order to prevent the glasses from being weighed down, you can put the glasses in a hard glasses storage box.   Frame adjustment After wearing the glasses for a period of time or being hit or squeezed, the frame will be deformed and twisted. If you find discomfort, pain, dizziness,...

Round face The overall line is round and should be matched with a frame with a harder shape, a thick square frame is the most suitable, and at the same time, a frame with a small frame height and a temple position should be selected to lengthen the face shape.   Oval face Also known as oval face, standard face shape, generally speaking, you can wear glasses of any style....