Distance
OSHA's computer workstation guide puts the monitor directly in front of you and at least 20 inches away. It calls 20 to 40 inches (50 to 100 cm) the preferred viewing distance. Screens set too close make your eyes work harder to focus.
Height
Place the monitor so the top line of the screen is at or slightly below eye level. The centre of the screen should normally sit 15 to 20 degrees below horizontal eye level. A screen set too high tilts your head and neck back.
If you wear bifocals, OSHA suggests going lower than that and tilting the screen up toward you, so you are not tipping your head back to read through the bottom of your lenses.
Tilt and glare
Tilt the screen so it faces your line of sight. A screen tilted well back picks up glare from overhead lights, so if you see a ceiling lamp reflected on it, reduce the tilt before you move anything else.
Holding it there
A riser lifts a screen in fixed steps. Our 3-level metal mesh riser sets 10, 12 or 14 cm and leaves room underneath for a keyboard or notebooks.
An arm moves freely. Our dual gas spring arm holds two 13 to 32 inch screens, tilts from -45° to +90°, swivels 180° and rotates 360°, and clamps to a desk 0.39 to 3.15 inches thick. Both ship from a US warehouse.
