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8. Take off contact lenses/eye glasses before use.
9. Do not use the Product in high-temperature, inflammable
or damp place or place with electro magnetic radiation.
10. Do not dismount the Product without permission;
Ensure the Product free of crashing and water.
Do not wash or immerse in water.
>> Scientific Knowledge:
Prevent "Computer Vision Syndrome"
People will feel uncomfortable if using computer for a long
time. Ophthalmologist and optometrist call it as "Computer
Vision Syndrome (CVS)". Details on CVS are as follows:
1. Eye fatigue will be aggravated If not blinking for a
long time upon watching fluorescent screen.
This circumstance is often when reading lots of files, for
computer user does not blink or blink as less as possible
to avoid missing content. Blinking is critical for eyes
protection. It offers position change opportunity to
tense crystalline lens and iris muscle, so as to lubricate
eyes and prevent eyes from generating itching and
burning sensations and other symptoms.
2. The abnormal reaction "McCullough effect" will be
generated after seeing green words in black
fluorescent screen while working before fluorescent
screen.
Though harmless to body, this symptom can last
for several days. White colored space or image turns to
pink.
3. Knowledge regarding operator wearing bifocal
glasses.
For this kind of people, optimum location of all objects
should be on or below chest, with 12-18 inch distance.
If the height of fluorescent screen is not appropriate or
the distance is too near, computer user will uncomfortably
bend or have his or her head keeping a quite unnatural
angle, which can cause dizziness, neck sore, shoulder
sour or general malaise. According to expert, computer
operating is a kind of work required for straining eyes,
and it can reduce secretion of lubricant and enzyme in
eyes. General speaking, there will be eye dryness and
fatigue, ghosting, blurred vision, head and neck soar and
other symptoms if times of blinking is less than 5 and
interval is relatively long.
