People with presbyopia usually have difficulties doing close up work, like reading books or newspapers and sewing. Presbyopia is a aging problem. When people get over 40, they usually have problems focusing on the near objects.
The early sign of presbyopia is that you can't see close up things such as reading. If you are over 40, it is possibly that you have got presbyopia. Other symptoms include eyestrain, headaches or feeling tired from doing up-close work.