Reduce glare by using anti-glare filters on lamps and monitors. Make sure your study area has both ambient room lighting (at least 300 lumens) and focused task lighting (450-850 lumens). Take breaks every 20 minutes to rest your eyes, following the 20-20-20 rule from the American Academy of Ophthalmology: every 20 minutes, look at something 20 feet away for at least 20 seconds. Think about spending hours on a computer. Following the 20-20-20 rule and having proper lighting can help prevent eye strain and keep your eyes comfortable.