Computer Vision Syndrome or CVS is defined as a group of eye and vision–related problems that result from prolonged use of digital gadget, such as computer, tablet, e–reader and smart phone. The level of eye irritation and discomfort appears to increase relatively with the amount of digital screen use.
Signs And Symptoms Of CVS
- Dry or red eyes
- Burning eyes
- Eye irritation
- Blurred vision
- Double vision or focusing problem
- Light sensitivity (an intolerance of light)
- Eye pain
- Neck, shoulder or back pain
Risk Factors Of CVS
Factors those contribute to CVS include:
- Less blinking. When working at a computer, the eyes have to focus and refocus all the time. This causes reduced eye blinking, resulting in dry eyes and eye irritation.
- Inadequate lighting while working at the screen.
- The presence of glare and reflections on the screen may make viewing difficult.
- Viewing digital screen is different than reading a printed page such as newspaper. Often the letters on the computer or handheld device are not as precise or sharply defined, the level of contrast of the letters to the background is reduced and the resolution quality of digital screen is not stable. As a result, the eye focusing and eye movement requirements for digital screen viewing can place additional demands on the visual system, causing eyestrain and discomfort.
- Improper distance between the chair and the screen.
- Inappropriate eye level on the screen.
- Unhealthy seating positions.