Posts Tagged ‘Computer’

After working for few hours in front of computers, sometimes eyes become red. What causes this and how to avoid it?

There is a condition called Computer Vision Syndrome (CVS). The typical symptoms of CVS are:
- Headaches, especially in front of head.
- Loss of focus.
- Burning, irritable, tired eyes.
- Inability to read for prolonged periods of time.
- Neck and shoulder pain.

CAUSES OF COMPUTER VISION SYNDROME

- Energy respond differently to characters on computer screen as compared to printed characters.
- The characters on a computer screen neither have contrast or sharp edges. These characters have their brightness. maximally at the center and decrease in intensity towards their edges. It makes it difficult for eyes to maintain focus and remain fixed onto the images.
- The continuous flexing of the eyes focusing mechanism leads to fatigue and a burning, irritable, tired-eyes feeling that is so common after sitting long hours at computer.

PREVENTION OF COMPUTER VISION SYNDROME

- Wear proper glasses that will allow you to work comfortably and productively.
- Use proper lighting by eliminating harsh, distracting, exterior light that cause eye strain by closing drapes, shades or blinds. Reduce interior lighting by using fewer light bulbs or fluorescent tubes.
- Minimize glare.
- The computer display screen should be upgraded. New LCD screens are easier on the eyes. Select screen refresh rate of at least 75 Hertz. Maintain the highest resolution possible.
- The display settings should be set so the brightness of screen is about same as work environment.
- The text size should be three times the size of the smallest text you can read from a normal viewing position.
- Do not stare and work at a stretch at the computer. Blink often to avoid dryness and irritation. Tears coating the eye evaporate more rapidly during long non-blinking phases.
- Relax your eyes.
- Modify your workstation. If you need to look back and forth between a printed page and computer screen, it can cause eye strain.
- Stretching is necessary in between the work to prevent neck, back, and shoulder pain.
- Take a 10-min break every hour to stand up, move about and stretch.

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What are various health problems sitting continuously for long hours in front of computers.

Sitting continuously for long hours in front of computers is responsible for various health problems including weak eyesight and stress. I am frequent computer user. Of course it’s interesting to know how danger for my health computer can be.

- Lower Back Pain : Wrong type of chair or desk, Right chair an desk but wrong posture, Sitting on the edge of the chair, sitting with all the weight on one buttock by sitting cross legged.
Corrective Measures: Always go for a chair that has a mechanism for lowering and raising the height of the backrest. Never buy a computer chair that has arms rest.
- Neck Pain : While typing when one is moving the neck up and down, left and right too much it causes neck pain.
Corrective Measures: A document holder is a must to restrict neck movement. Take opticians advice and go for special glasses that you can use while in front of the computer. Screen’s height should be adjusted parallel to eyesight – not too high and not too low.
- Hurting Hands : Your hand and wrist ache after working at the computer all day, and they sometimes start feeling numb. It is really important to give your fingers, wrists and hands a break from resting on the keyboard all day. A tennis ball is a great way to do this.
- Strain In the Eyes : Glare from monitor, sun glare directly coming in straight on to the monitor from windows, lighting arrangement of the room are some causes that put strain on the eyes.
Corrective Measures: The correct thing to do is to place the computer table between lights and not directly under them. The best alternative is to switch off the overhead light and switch on the angle poise lamp.
- Many people suffer from structural problems related to the physical stress of sitting incorrectly, or for too long in front of their computers.
- Many people suffer from structural problems related to the physical stress of sitting incorrectly, or for too long in front of their computers. So there are chances you’ve experienced a fair amount of computer stress, from minor frustrations here and there to a virtual visit to computer hell.
- Take a break for 10 minutes after every uninterrupted 60 minutes of computer work. Short, frequent breaks are more beneficial than occasional, longer breaks.