Both prescription and non-prescription eyeglasses
The most important preparation is that proper tools for such repair are needed. In some instances, some spare parts are necessary. These tools and parts can be easily found on the Internet. The formal name of such tools is “eyeglass repair kit”, which contains one small, flat-headed screwdriver and a small, Phillips-headed screwdriver. These basic two tools are simply used to turn the tiny screws on a frame. In some cases, there are still other helpful tools, including a powerful pocket penlight and a pocket-sized magnifying glass as well as an extended tip magnet probe. Penlights can be used to light up the small screws and other small parts. Magnifying glass functions in a similar way. In addition, the magnet probe would help in picking up tiny screws and holding them during tightening.
Of course, repairing a frame by oneself can only resolve small problems, which are also reflected by the tools described above. Problems under control of a self repair include loose screws and springs. In fact, these problems are always caused by improper ways to hold the frame. The only right way is to hold eyeglass frames by the nosepiece or frame bridge. Other methods such as holding by the lens frame or bows will probably lead to those loose parts. Eyeglass repair involving loose screws is the most common. They can be just tightened up using a screwdriver or simply replaced with new ones. Loosened spring can be fixed in a similar way.

