If the middle of the glasses is broken, you can stick it with adhesive tape, or polish it, and then stick it together with 502 to postpone the urgent need. Because even if the glasses are stuck together after they are broken, they will become easy to break again, so we should quickly replace the glasses after we stick them together. How to repair broken glasses if the middle of our glasses is broken, there is no way to perfect repair and make it available for long-term use again. We can only make it stick together for a short time until we change a new frame.
If you want to glue the broken part in the middle of the glasses, you can directly glue it together with adhesive tape. Or you can use some tools to grind the broken parts a little, and then glue them together with 502 glue.
Nowadays, many young people are short-sighted because they face the electronic screen for a long time or read in an incorrect posture. Therefore, when reading, we must pay attention not to be too close to the writing, and do not read in a dark environment.