The ciliary muscle has to work overtime to focus the eye against too-bright light, says Deobhakta. Fiddle with the brightness, position, and tilt of your screen to see whether it makes a difference in how your eyes feel. Antiglare eyewear may help reduce eyestrain in the office (try glasses from Felix Gray; shopfelixgray.com) as well as while driving (Maui Jim makes sport sunglasses with polarized lenses; mauijim.com).
