Originally published August 6 2005
Cell phone radiation may damage eyesight
by Mike Adams, the Health Ranger, NaturalNews Editor
A new study recently found that the radiation emitted by cell phones may cause a reduction in vision.
The technological developments of the last twenty years such as cell and cordless phones, wireless communications, monitors and even high voltage lines have all been studied as potential risk factors for cancer and other diseases.
Less known to the public, but still a matter of some extensive research, is the study of the effect of microwave radiation on the visual system and especially on the lens of the eye.
The basic motivation for this research came after World War II when it was suspected that radar operators suffered a greater risk of developing cataracts (a condition characterized by clouding in the natural lens of the eye).
Although these particular suspicions were eventually shown to be debatable, they were the trigger for the first guidelines for exposure to electromagnetic radiation.
A common measure for microwave radiation is the Specific Absorption Rate (SAR) which is the average power density absorbed in a given volume per average weight density (Watt/Kg).
When microwave energy impinges upon body tissue, part of it is absorbed and converted to heat due to ionic conduction.
Past studies in animals have shown that even a slight increase in temperature close to the lens (as low as 3 degrees Celsius) can increase the risk of developing a cataract.
A less common measure is called Specific Energy Absorption (SA), and is defined as the energy density absorbed in the tissue divided by its weight density.
1. Exposing the lens for a prolonged time to microwave radiation (in the frequency and intensity described above) caused macroscopic damage affecting the optical quality of the lens.
Interestingly enough, a similar maximum level was observed when the irradiation intensity was reduced to one-half the original, except that it took twice the time.
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