Sashealth - So far, the public knows that reading in dim places that can damage the eye. But what actually happens is not to damage the eyes, but the experienced eye strain. This condition is usually often do the kids before bedtime. With only accompanied by a dim light or dimly lit room, the children read story books, comic books or other books.
First, the retina will begin production of chemicals, which are more sensitive to light, these chemicals can even detect light, which is converted into electrical signals and sends signals to the brain.
Secondly, the IRIS muscles relax so that the reasons for the opening of the eyes. This allows the eye to collect as much light as possible to nerve cells in the retina can adapt to low light on the retina can operate in low light conditions.
When reading in dim light, the focus will be more difficult, which makes your eyes have to work hard to be able to separate the words and the eyes become more tense. If the eyes are working hard for a long time, then the eye will become tired even though many of the muscles that are used. This condition can cause some physical effects such as sore eyes, itching, headaches, back and neck pain and reduced vision. Also sometimes people rarely blinking because it is too focused on one object, so the possibility can experience dry eyes and discomfort. If this condition continues, it will increase eye strain. If symptoms are not reduced, then chances are the person has a fundamental problem such as nearsightedness eye.
Most assume that reading in dim light causes permanent damage, perhaps because someone already has a fundamental problem of short-sightedness and coupled with the advent of eyestrain. Because it should be read with good light, i.e. light is too Dim, but not too bright light, so there is no eye strain. In addition, try often flashing, if he is too focused on the object, and look out the window every 15-30 minutes.