Yamaha PSRS500 61-Key Arranger Workstation Keyboard

Visual Stress in CVS is due to an increase in the number and complexity of necessary eye movements and focusing skills, poor lighting conditions, glare and distracting reflections and the extended amount of time spent on the computer.

Working at the computer all day is a physically demanding job. When working at the computer all day long, the eyes receive the worst punishment. When using the computer your blink rate decreases by a drastic 70 percent. Generally speaking means that instead of blinking an average of 18 times per minute, you are now blinking 4 times per minute.

Lighting : Eliminate bright light, Avoid white reflective surfaces, and use indirect lighting systems.

Screen Reflections : Use an antireflection screen, cover the sources of the reflections, and try to use dark characters on a light background.

Display Characteristics : Use monochrome monitors and maximized resolution.

Eye Position : Paper should be at 30-40 cm and 30 degrees from eyes, monitor too should be 20-25 cm below eye.

Glare : Offices are usually too bright for terminal work. Try to use Computer Glasses or Anti-glare screen. Install a glare guard, an optically coated glass anti-glare filter. The high resolution, high contrast filter increases view ability. Install a screen or partition behind your computer to reduce both outside light and overhead glare.

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