Reading glasses are designed to be worn for short periods of time when performing close-up tasks such as reading, writing, or using a computer. They are not intended to be worn all day long, as doing so can cause eye strain, headaches, and other discomforts.
Wearing reading glasses for extended periods can also cause the eyes to become dependent on the glasses for close-up vision, which can make it more difficult to see clearly without them over time.
If you find yourself needing to wear reading glasses for long periods of time, it's important to take frequent breaks and allow your eyes to rest. You can also consider getting prescription glasses that have progressive lenses, which allow for clear vision at multiple distances, or using bifocal lenses if you have a prescription for distance vision as well. However, it's always best to consult with an eye doctor to determine the best course of action for your individual needs.