Periodic Eye Check : All computer workers should have a comprehensive eye examination. Any refractive error & a problem of binocular focusing should be sorted.
Workplace Lighting : The brightness of the screen and the surrounding room should be balanced. The light should be enough to enhance computer screen visibility and should not create glare or reflections. Lighting levels between 200 and 700 Lux (approx 20-70 foot candles) are recommended. Negative contrast computer displays (dark letters on a light background) provides a more legible image than a positive contrast displays (light letters on dark background).
Workstation Design : The computer workstation should be ergonomically correct. The eyes should be in a downward gaze of about 15 degrees when viewing a computer screen. The top of the screen should be below the horizontal eye level of the operator and tilted back slightly (10-20 Deg) away from the operator. An ideal viewing distance is 20-28 inches.
Humidity : Airtight air-conditioned atmospheres at most workplaces lead to increasing dryness of the eyes.
Blinking : Normal blinking rate of 14-16 blinks/minute is reduced to 4-6 blinks/minute while working on computers. This reduced blinking contributes to excessive evaporation of existing tears and leads to dryness of the eyes. A sub-conscious effort to blink frequently is helpful in such situations.
Frequent Breaks : A short break taken frequently during long working hours is very relaxing for the eyes. An ideal situation is to take a break for 20-30 seconds after every 20 minutes of constant work.