The eye is an essential part of the human body. Sight is life they say as it enables us see and appreciate the beauty that surrounds us. The eye has a lot of protective functions which enhances improved vision.
The introduction of technology has created more task for the human eye and also an increased protective function against the ultra violet rays amongst others with great appreciation to the ever working presence of the cornea and lenses which are of great importance and vital structures of the eye that enhances vision.
These two structures prevent the passage of a great amount of ultra-violet radiation allowing the very little amount to get in thereby, affecting the photo receptor cells in the eye. The ultra-violet radiations unabsorbed by the cornea and the lens are composed of blue light (blue –uv) which results in CVS or VITS.
Computer vision syndrome or virtually induced terminal syndrome is a condition that results from focusing their eye on any media that emits blue ultra-violet radiation.
"Blue ultra violet radiation is scientifically any radiation between 350-500nm"

Sources of blue light
• sunlight
• computer screens
• Television screen
• Smartphone screens
• fluorescent light
Symptoms of CVS
fatigue
dizziness
eye strain even when we'll rested
Headaches
Myopia
Long term effects of CVS
o permanent Blindness

Prevention of CVS
CVS can be a serious issue. Listed below, are precautions that can be taken to avoid CVS
* Use of anti reflective lenses- they absorb all unnecessary ultra violet radiation thereby reducing the risk of visual disturbance

* Practicing the 20-20 rule - This is for those who use phones and laptops for a long period of time on a daily basis like the bankers and the ever enthusiastic youth who are always on their phones. The rule entails looking away at an object of distance for 20seconds or more every 20minutes. This practice is important to avoid adaptation to nearness.
* Use of sunglasses - Anti reflective lenses are best suited to prevent CVS but for the sake of fashion as it affects the modern man, sunglasses can be used for outdoor activities
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