Effect of Red, Yellow and White Light Emitting Diode (LED) on Rat's Retina

Authors

  • M. I. EL Gohary  Physics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt
  • M.M. Gamal  Biophysics and Laser Science Unit, Research Institute of Ophthalmology, Giza, Egypt
  • A. E. Ibrahim  Biophysics and Laser Science Unit, Research Institute of Ophthalmology, Giza, Egypt
  • M. A. Abu Ghazala  Physics Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt

Keywords:

Light Emitting Diodes, Electroretinogram

Abstract

Light-emitting diodes (LEDs) are the basic lighting components in screens of PCs, phones and TV sets; hence it is so important to know the implications of LED radiations on the human visual system. The present study is designed to evaluate the influence of Red, Yellow and White LEDs on rat's retina. Sixty-six female Wistar albino rats weighing 250-300 g classified into 4 groups. Group (1) served as control. Group (II) exposed to (645 nm) red LED (12 hr light - dark cycle) for 3, 7, 14 and 21days. Group (III) exposed to (588 nm) yellow LED (12 hr light - dark cycle) for 3, 7, 14 and 21days and Group IV exposed to (the wavelength peaks are 448.7 nm and 561 nm) white LED (12 hr light - dark cycle) for 3, 7, 14 and 21days. At the end of each period, electroretinogram (ERG) has been carried out. The results indicated that there was no significant effect for yellow LED on the ERG. After exposure of rat's retina to red and white LED, there is reduction in a- and b- wave amplitudes. The data suggest that the red and white LED may causes retinal toxicity. Therefore, it is very important to recognize the hazard of LED radiations that affects vision and take appropriate precautions for the eye safety.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2017-08-30

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Volume 3, Issue 5, July-August-2017

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Research Articles

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[1]
M. I. EL Gohary, M.M. Gamal, A. E. Ibrahim, M. A. Abu Ghazala, " Effect of Red, Yellow and White Light Emitting Diode (LED) on Rat's Retina, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 3, Issue 5, pp.729-736, July-August-2017.