Effect of Blue and Green Light Emitting Diode (LED) on Rat's Retina.
El gohary, M., El awady, A., Mahmoud, T., Gamal, M., Abu ghazala, M. (2017). Effect of Blue and Green Light Emitting Diode (LED) on Rat's Retina.. EKB Journal Management System, 18(1), 56-66. doi: 10.21608/ejbbe.2018.2842.1015
Mohamed Ismail El gohary; Amal El awady; Tamer Mahmoud; Mona Gamal; Mostafa Ali Abu ghazala. "Effect of Blue and Green Light Emitting Diode (LED) on Rat's Retina.". EKB Journal Management System, 18, 1, 2017, 56-66. doi: 10.21608/ejbbe.2018.2842.1015
El gohary, M., El awady, A., Mahmoud, T., Gamal, M., Abu ghazala, M. (2017). 'Effect of Blue and Green Light Emitting Diode (LED) on Rat's Retina.', EKB Journal Management System, 18(1), pp. 56-66. doi: 10.21608/ejbbe.2018.2842.1015
El gohary, M., El awady, A., Mahmoud, T., Gamal, M., Abu ghazala, M. Effect of Blue and Green Light Emitting Diode (LED) on Rat's Retina.. EKB Journal Management System, 2017; 18(1): 56-66. doi: 10.21608/ejbbe.2018.2842.1015

Effect of Blue and Green Light Emitting Diode (LED) on Rat's Retina.

Egyptian Journal of Biomedical Engineering and Biophysics
Article 6, Volume 18, Issue 1, 2017, Page 56-66  XML PDF (1.57 MB)
Document Type: Original Article
DOI: 10.21608/ejbbe.2018.2842.1015
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Authors
Mohamed Ismail El goharyorcid 1; Amal El awady2; Tamer Mahmoud3; Mona Gamal2; Mostafa Ali Abu ghazala email 3
1Physics Dpt., faculty of science (boys), Al azhar University
2Biophysics and Laser Science Unit, Research Institute of Ophthalmology, Giza, Egypt.
3Physics Department, Faculty of Science Al-Azhar University, Cairo
Abstract
Our eyes are increasingly exposed to light from the light emitting diode (LED) of video display terminals (VDT) which contain much blue light. VDTs are equipped with televisions, personal computers, and smartphones.; 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 blue and green LEDs on rat's retina. Forty-six female Wistar albino rats weighing 250-300 g classified into 3 groups. Group (1) served as control. Group (II) exposed to (461nm) blue LED (12 hr light-dark cycle) for 3, 7, 14 and 21days. Group (III) exposed to (525.9 nm) green LED (12 hr light-dark cycle) for 3, 7, 14 and 21days. At the end of each period, electroretinogram (ERG) and microscopic examination are carried out. The results indicated that there was no significant effect for the green LED on the ERG, and microscopic examination illustrates mild changes.   After exposure of rat's retina to blue LED, there is a reduction in a- and b- wave amplitudes, and the histopathological examination illustrates severe changes. The data suggest that the blue LED may cause retinal toxicity. Therefore, it is very important to recognize the hazard of LED radiations that affects vision and take appropriate precautions for the eye safetyKeywords: Light emitting diodes, Electroretinogram, histopathological examination.
Keywords
Light emitting diodes; Electroretinogram; Histopathological examination
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