Glazing is an essential process in eyewear production that involves fitting lenses into a frame to meet the prescription needs of the wearer. This process requires precision and attention to detail to ensure that the lenses are correctly aligned and secure within the frame. Reglazing, on the other hand, involves replacing the lenses in a frame that has already been glazed in the past, either to update the prescription or to replace damaged lenses. This process is often more cost-effective than purchasing a new frame, as the wearer can keep the existing frame and only replace the lenses.