Choosing a pair of qualified spectacle frame is highly crucial when you get the right lenses for prescription sunglasses especially for the children. The thing is that children are not good at talk, if the frames are not suitable, partents would mistakely think they are too naughty to wear glasses. In fact, a pair of improper glasses is harmful to their eyes and will even bring about their aversion to wear glasses. Selection of children glasses needs to consider the following several aspects:
The frame for kid glasses should be light. In generally, the appropriate weight of children glasses should between 13 gram and 19 gram. There is big difference between the child's head and the adult's, especially the angle of child's nose peak, the degree of curve about the bridge of nose in comparison with the adult's. So, choosing the frame for children glasses, you should pay attention to the fat-thin of child’s face, height of nose bridge and so forth. Most of children' nose bridges are comparatively low, and the nasal bone is not mature, so the spectacle frame should has a high nose pad, or the frame with adjustable nose pad. Otherwise，the glasses with low nose pad would make the frame adhere on face, and even contact with eyelash, as a result, cause the glasses no longer use. The children's glasses frame should best be the style of hanging ears, and using elastic belt to tie around the around the back of the head. The belt should not be tied too loose, so as to avoid the glasses slipping from the child's head.
The frame of children prescription eyeglasses has a great variety of styles and colors, and the children also give importance to the choice of frame, their pursuit to the beauty is as good as the adult. But, you should get the right lenses for your child from reality, because most of the children are naughty and enjoy playing, so the accident to the eye caused by the broken lens often occurs. Therefore, the best lens is the resin film, and the frame should be plastic, and the glasses being affixed to the nose is the most appropriate. In addition, children's diopter changes quickly, and generally, they have to replace their glasses about once a year. Thus, choosing plastic frames, from an economic point of view, is comparatively economical.
It is not suitable for children to wear metal frames because metal frames' nose tap will cause the allergies and nose oppression. If the nose pad of metal frames is not adjusted accurately, the phenomenon of oppressing nasal bone will be severer. In addition, metal glasses frames become distorted, deformed, broken easily, which will affect its appearance and results of use. But the plastic frame is a more reasonable choice for children spectacle frame, for the plastic frame is too hard to be damaged easily. If they like metal frames, don't choose perforated frames and semi-frames. These two kinds of frames are easier to be broken.
Children's prescription glasses should be sufficient in area of sight, due to the wide range of children's activities. Don't choose frames which cause shadow or blind corner and avoid too large frame and too long hanging loop.
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