The emergence of the computer, this videogames, prescription internet later, stuff email, el chat, los blogs, fotologs and now social networks undoubtedly shook ways to interact with others, job performance and to study, mostly by streamlining tasks.
However, experts warned that continued use of the PC disturbs the quality of vision and although not involve altering the view itself definitely, causing discomfort should not be ignored.
Alfredo Roude, Eye Doctor Eye Clinic Doctor Nano, explained the symptoms and solutions to care for the health of eyes.
“In a world where the computer goes from work to the house, or where children are not separated from the screen in studying, play and socialize, you need to ask how this exposure affects vision”, dijo Roude.
The debate is open, multiple professionals talk about distances and times; however, The first myth is that you have to break down eyes are not spent, in any case they may suffer from fatigue.
In that sense Roude emphasized that “Eye health varies throughout our lives”, therefore considered necessary “periodic ophthalmologic consultations from early childhood to detect those diseases or refractive errors that can alter our vision”.
“From having a clear idea of how we, can take into account the many variables that come into play when we sit in front the computer, as lubrication of the eye, monitor position, lighting and posture”, noted.
Also, exemplified, “in a conversation the human eye blinks average 22 times per minute, when reading 12 a 15 times; in return, when we're on the computer we blink less than 5 times per minute”.
This constant attention to the screen blink rate decreases “increases the symptoms of dry eye, causes eye and mental fatigue and lubrication for him blink is like oil to a car engine”, alerted the medical.
Equally damaging is the relative position of the monitor look, says.
According to Roude, PC screen should be below the visual horizon. “This allows larger surface lids covering the eyeball, and decrease the exposure of the cornea”, explained.
Thereby, “the tear film covering the cornea will dry to a lesser extent“.
“The correct position is to have, then, the head tilted slightly to the monitor, about 15 degrees, and located not less than 35 a 50 centómetros away PC“, added.
Another frequent source of discomfort is the bad lighting, Roude why recommendedavoid screen glare to increase visibility and reduce eye fatigue.
“The ambient lighting-points- be tenuous enough for a good contrast of the screen but not difficult eg, vision of texts is on the table“.
So, the light of the window should not result in the face of the person or reflected in the monitor.
The ideal location would be the lighting reaches the side of monitors, specialist advises Nano Clinic.
Regarding the electricity, must fall behind the monitors, states, while suggesting “use table light fixtures, as they may be located so that the light does not reflect on the screen or in the eyes”.
As to the rays emitted by the monitor, all biomedical studies conducted have not provided substantial health risks due to ionizing radiation or non-ionizing. However, itself was found that the main problems in relation to the PCIs will relate to the body position.
Another aspect that seems clear is that for opticians exposure to computer screen does not involve a serious risk for low vision.
“No vision loss occurs, quick or slow”, remarks categorically Roude.
Nor, he added- affect any existing standard refractive, ni astigmatismo, or other defects that may come to have the person.
Facing this context, question is then a must to know how important the anti-reflective lenses to prevent distortion at least the quality of the view.
But Roude struck again against what is supposed to be another myth. “And general, a person who emetrope, o sea, it possesses no defect in refractive, should not wear glasses for PC, although relate be subjectively more comfortable with the lens and by the possibility of using crystals antireflex”, assured.
If you use glasses-signal- the eye is not that bad and usually dependent on the same is done; but as will generate better view, the person gets used to look better with them and produces the sensation of needing to use.
“A telescope that is prescribed inappropriately can start generating asthenopia symptoms that affect the quality of vision and hours at the computer”, warned the doctor.
Also, warned that should be indicated only in patients with a refractive error and that, at least that is, can help you be more comfortable.
To prevent eye drooping eyelids, blurred vision, redness and dry eye, discomfort, pain caused by light or sand in the eyes, There are a number of recommendations presented here, as consigned by specialists.
* It indicates on oftalmólogo, use Prescription eye drops periodically, while working front of the screen.
* In case user to be contact lenses, use these eye drops with frequently.
* Position yourself in front of the display so that the gaze is slightly down.
* Do not stare at the monitor more than 50 minutes at.
* Take visual breaks 5 a 10 minutes, Levantes, look in the distance and then close his eyes on.
* Direct your gaze to the remoteness párrafo mobilize the eye muscles.
* Adjust the room temperature to avoid the increase of dry eye.
* Consult your ophthalmologist for possible need for optical correction for intermediate distances, control studies.