It is possible to insert your own lenses back into your eyeglass frame, but it takes a little know-how. Lenses are held into different types of frames in different ways. Metal frames have screws that hold lenses in place, and plastic frames are made of material that is manipulated to allow for lens insertion. Using the right method and tools will help make putting your lenses into your frame easier.
Inspect your lenses to make sure they are not broken, chipped or cracked. Inserting a chipped lens into a frame can cause the lens to break further.
Loosen the screws on the side of the frame if it is metal. These are usually on the bottom side of the metal rim that holds the lens in place, called the eyewire. It helps to turn the frame upside down and lay the eyewire on the edge of a table or counter to steady the frame while you remove the screws. You do not need to take the screws all the way out, just loosen them as much as required to fit the lens back in.
For plastic frames, soak them in warm--not ho--water for a few minutes to soften the plastic to make the frame pliable enough for lens insertion.
Check the lenses to make sure you are placing the correct lens in the correct side of the frame. It is easy to get the lenses backwards, especially if they are oval-shaped. If you are unsure, hold the lenses over your eyes to check your vision.
Hold the frame in one hand and with the other hand, gently push the lens into the back side of the frame, toward the middle, inner side that rests on your nose. The lens should sit inside the rim of a metal frame and you should be able to press the eyewire around it tightly. Tighten the screws.
Push the lens into the back side of a plastic frame, first toward the centre part of the frame and then gently press the other side of the lens into the part of the frame by the temple, also called the earpiece. It takes a little pressure, but be careful not to push too hard or the lens could chip. You should feel the lens snap into the frame.
Repeat this with the other lens. Rewarm the plastic frame to insert the second lens.