 |
|
|
| | | | | | | | | | | |
| | | | | | | | | | |
|
|
| Advertisements |
Ask Questions, Share Knowledge with Krify Answers |
|
|
Posted by:
Dr.SudhakarReddy
Article
viewed:
11321 times |
Computer affects on EYES!!-SAFTY.
|
Computer affects on EYES -SAFTY!!
introduction:
Computer technology has revolutionised the work place and the home environment. Who would have thought that in the year 2001 our lives would revolve around computers?
Approximately 71% of children work with computers in school. Today probably ever child has access to computer either at school, at home or in the library. Similarly, very few working adults may not have access to the computers today. A great majority of retired adults also use computers.
While computers have revolutionized our lives, they have also brought in some job-related complaints and symptoms.
symptoms/problems associated:
Some of the common symptoms associated with excessive use of computers include;
- frequent headaches,
- blurry or double vision,
-burning eyes,
-focusing difficulties,
-eye fatigue, eye irritation,
-excessive tearing, dry eyes,
-pain in the eyes,
- frequently blinking
-squinting.
Surveys of computer workers reveal that vision related problems are the most frequently reported health- related problems, occurring in over 70 percent of computer workers.The complex of eye and vision problems related to near work experienced during computer use has been called “computer vision syndrome.
factors causes this problems:
The factors which make it visually demanding while working on a computer include, frequent saccadic eye movements, accommodation and vergence. Problems are noticed when the visual demands of the task exceed the visual abilities of the individual to comfortably perform the task.
scientific reason:
Eye movements, focusing and eye alignment processes involve repetitious muscular activity. The movement of each of the eyes is controlled by six extraocular muscles, which are responsible for proper alignment of the eyes when viewing objects such as the computer screen. The ability of the eyes to change focus is controlled by the ciliary muscle, which exerts a force on the internal lens of the eye.
unique aspects involing this task:
Working at a computer is more visually demanding than doing other standard office work such as reading printed documents. Aspects of the design of the computer video display such as
- screen resolution and contrast,
- image refresh rates and flicker,
- screen glare,
- working distances and angles.
prvevention:
In order to accomplish specific computer related tasks, frequent eye movements from work document to the computer screen, or from the screen to the keyboard and back again, are used. In addition, as the object being viewed changes, so does the need for a change in eye focusing to maintain a clear image. These changes occur repeatedly during computer use. The flexibility of the lens within the eye and weakening of the ciliary muscle gradually decreases with age (onset of presbyopia) ,which affects most people after age 40. This will require a computer use to have proper focusing spectacle correction.
A computer worker using a bifocal may often find it heard to focus on the screen. Bifocals are designed to correct the distance vision and normal reading vision which requires holding the reading material from 12 to 16 inches.
However, computer screen is viewed from 20 to 24 inches from the eyes. Bifocal wearers have to constantly keep moving back and forth and change their postures to focus the screen. This causes neck stress and eye fatigue.
Computer users above 50 years of age must inform their eye doctors that they work on the computer and have these symptoms. Using progressive type of multifocal lenses and frames that can be adjusted to provide a adjustable pantoscopic angle are the most suitable form of visual correction for the computer users. If glare is a problem, using a very light tint or antiglare coating on the spectacle lenses can provide the needed visual comfort.
Many aspects of computer vision syndrome meet the same criteria used to define cumulative trauma disorders or repetitive stress injuries.
More attention needs to be given to reducing the impact of computer related vision problems in the workplace and to providing appropriate eye and vision care for workers whose computer on a regular basis.
In summary, the computer users should make note of all the symptoms and the adjustments that they have to make to function and discuss these with their eye care providers. Most of the patients using appropriate visual correction and modifications in their work habits can enjoy working on the computers.
k_sudhakarreddy38206.3279398148
|
Disclaimer: The above article is responsible of the individual who post, krify.com does not hold responsible for any kind of
disinformation.
If you discover one or more of the krify.com pages direct you to
messages that harass, abuse, have obscene, unlawful, defamatory,
libellous, hateful, or otherwise objectionable content; or have spam,
please inform to krify.com and that will be deleted as soon as
possible.
|
|
|
|
|
Forward
this Article to your Friends
Simply
Share this Article to Friends - Click
here to Send 
AICAR - Drug may cure obesity