These are commonly used for tasks such as reading, writing, or doing hobbies. This is especially for extended near tasks. Since there is a fixed distance between the lens and the object you are looking at, accommodation is required so you should use your reading glasses if you have one. This causes less fatigue because the magnifier rests flat on the page. However, it is not a hands free device, and it is not that portable. Children have and easier time using stand magnifiers.