How to choose eyeglass frame style Although there are many styles of frames, dazzling, but a careful analysis, there are only three basic types, square, round, oval type. The face shape varies, generally oval face type people, each type is suitable, while round face type is best to choose square or pear-shaped frames (highlighting the longitudinal line), triangular face type is generally choose round or oval frame to wear. Frame material 1, plastic frame: its characteristics are light, easy processing, room temperature does not deform, the price is generally lower. 2, metal frame: its characteristics are strong, light, beautiful, is currently the most commonly used frame. 3, mixed frame (plate): that is, made of a mixture of metal and plastic, that is, the sturdiness of the metal frame, but also easy to process into a variety of shapes. 4, brushed frame: no bottom frame, with nylon thread embedded in the bottom of the lens. 5, no frame: no frame, only with the nose bridge and mirror angle, more elegant. Choose what kind of lenses suitable 1, glass lenses: stable refractive index, good wear resistance, stable optical properties, but heavier, easy to break. 2, resin lenses (CR-39): light, safe, high light transmission, not easy to break, but the surface is easy to scratch wear. 3, PC lenses: high refractive index, firm, but easy to wear. The lenses should be selected according to individual needs. Coated lenses are lenses with multiple layers of anti-reflective film on the surface to reduce reflection, increase light transmission, ensure visual clarity, increase aesthetics, and reduce red and UV damage to the eyes. What to pay attention to when children with glasses When children with glasses, generally choose resin lenses (light, safe, not easy to break), but the surface is easy to scratch, so it is best to use the resin lenses with hard film. In the selection of frames, generally according to the children’s face to choose the appropriate, safe, light, durable frame (generally to the plate type frame is high), and should pay attention to the length of the hanging ear, in order to increase the stability of the frame, the general children are active, so are equipped with a chain, hanging on the neck.