IDOWU EMMANUEL OLUWASEGUN
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The eyes respond to radiations from technological devices such as mobile phones. The scientist who have studied the impact of electromagnetic waves on human eye, say that cell phone usage can also lead to early cataract in lens apart from affecting retina, cornea, and other ocular systems of the eyes. While scientist across the globe are still debating whether cell phone radiation exposure results in brain tumours, a new study carried out by scientist at Charotar university of science and technology has revealed that cell phone also affects eyes. The wavelength of wireless signals which is about 2 to 2.5 cm used for cell phones and other wireless terminals matches with that received by the human eyes the dielectric constant [absorption capacity] of the eyes is around 70 which is greater than unity [above 50] this means that the eyes can absorb electromagnetic energy very quickly. ‘explains Dwivedi.
These scientists have also recommended that a mobile handset should be kept as far as possible from the eyes. ‘it should not be used more than is necessary. a user should avoid us of mobile areas or a car where the cell phone uses more power and the specific absorption rate[SAR] can be ten or hundred times higher than the normal. ‘they suggest. ‘the problem is not that the eye absorbs the energy, but that the heat absorbed by the eye does not get transmitted or related out of the body.’ Says Dwivedi, adding that prolonged use of cell phones can affect retina, sclera, lens, cornea as well as vitreous humour which are part of the human eye. Scientist computed that the specific absorption rate and maximum temperature increase in the eyes because of electromagnetic radio fields generated by wireless terminals such as mobile phones. The specific absorption rate also depends on the distance between eye and the radio frequency transceiver i.e. the cell phone.
There are warnings that the overuse of phones can lead to long term damage of the eyes optician Andy Hepworth said, ‘blue violet light is potentially hazardous and toxic to the back of the eyes. He says that over exposure to blue violet light has the potential to put us at greater risk of macular degeneration, a leading cause of blindness.
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