Metal Frame It is relatively thin, easily become bent or deformed. The metal can cause skin irritation when sweating and the sweat may corrode the metal surface. Distance between the frame and the face is farther. Most frames have nose pads, which can be adjusted according to the height of the bridge of the nose. Plastic Frame It is relatively thick, not easily bent or deformed. It fits students with excessive sweating as skin irritation seldom results from plastics. The frame is relatively close to the face. Most frames are without nose pads and the bridge supports the frame directly with little room for adjustment. Points to Note When Choosing Eyeglasses Frames: Severity of refractive errors: Students with severe refractive errors may choose plastic frames as they are thick enough to cover the edge of the thick lenses for a better look. Width of the face: The size of the frames should match the size of the face and the head. The larger the frames, the bigger and heavie...