Computer glasses are prescription glasses that are specifically designed for viewing computers, tablets, and smartphones. They are intended for close-up tasks only and should not be worn for driving or general purpose use. Computer glasses are customized to your prescription and are made to help reduce the eye strain associated with computer work. They allow you to focus your eyes on a computer screen, which is farther away than reading material is normally held. The purpose of computer glasses is to help your eyes focus on your screen and prevent the effects of computer vision syndrome (also known as digital eye strain) . Staring at a computer for extended periods of time is hard work for the muscles in and around your eyes. Focusing on text and images presented on a digital screen requires more effort for two reasons: distance and pixels. Computer glasses have the necessary prescription to focus at the distance of a computer screen, which is typically set up roughly two feet away from the face. Computer glasses can reduce the risk of eye muscle fatigue and discomfort caused by prolonged screen time. They can also help filter blue-violet light emitted by the screens of digital devices.