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Dr Shabbir Saifuddin, an eye specialist, formerly with Mafraq Hospital and Khorfakkan Hospital now working in the private sector, warned that Cathode Ray Tube (CRT) computer screens not only harm vision but adversely affect the brain as well.
“A new study shows that too many hours in front of the computer is putting us at increased risk for glaucoma, a disease caused by increased intraocular pressure. Glaucoma is currently the second leading cause of blindness in the world.
“In this age, we have no choice but to live with computers, but there are simple measures that can be taken to protect the eyes. Among these measures is to place the monitor at a low angle so you are not looking up at the screen but down, thus you do not strain your neck; apply some warmth to the eyes by rubbing your palms together then place the ball of the palm over your eyes. Heat aids blood circulation in the eye,” Dr Saifuddin said.
Having noticed the dearth of information on eye protection, Dr Saifuddin has recently published a small booklet titled the “Computer and its effects on children’s eyes” which has been approved by the Dubai Department of Health and Medical Services (Dohms) and which he has distributed to schools.
In the booklet, he points out that incidence of myopia (nearsightedness) among children is increasing at an epidemic rate due to the increased use of computer games.
“This kind of nearsightedness is a symptom of Computer Vision Syndrome (CVS). Excessive use of the computer can cause eye strain, itching, tearing, blurring of vision, neck pain, headache and fatigue,” Dr Saifuddin said.
He explained that the flickering, unstable image of a CRT monitor, often preferred due to low cost, causes eye fatigue and emit’s low grade radiation. “The brain can normally handle up to 2,000 flickers per second, the image on a CRT monitor flicker’s at between 8,000 and 10,000 flickers per second, which exhausts the brain, in this way LCD screens are better for the eyes,” he said.
“People often feel exhausted and tired at the end of a working day and attribute this to the stress of driving home, but the often overlooked cause is the computer screen and the bad lighting conditions in the work environment. The light in an office should be subdued, the screen should be brighter than the ambient lighting. Light reflected off a screen is harmful to the eyes,” Dr Saifuddin said.
He stressed the need for parents to teach their child to look away from the computer screen every 30 minutes for at least 30 seconds, in order to relax the eye muscles. He said that it is preferable for children to take a break every hour in a brightly lit area. Increased use of computers has been associated with decreased frequency of blinking and increased evaporation of tears.
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