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:: Volume 20, Issue 4 (Iranian Journal of Ophthalmology 2008) ::
2008, 20(4): 40-43 Back to browse issues page
Ultraviolet Radiation Absorption by Sunglasses Available through Iranian Optician Trade :union: and Miscellaneous Vendors
AliReza Keshtkar-Jafari Dr. *, Faramarz Anvari Dr., Ahmad Ameri Dr., Iraj Ahadzadegan Dr., Maryam Kia Dr., Sara Ghotb Dr., Mir-Sadredin Razavi, Arash Etemadi
Abstract:   (13849 Views)

Purpose : To compare the protection of eyes against visible light (VL) and ultraviolet radiation (UVR) by sunglasses available through the Iranian optician trade :::union::: (IOTU) shops and those provided by miscellaneous vendors.

Methods : Totally, 353 pairs of sunglasses, including 188 pairs from IOTU shops and 165 pairs from miscellaneous vendors were selected based on systematic random sampling. The amount of UVA, UVB and VL transmission of the samples were examined by spectrophotometer. American national standard institute (ANSI) standards were the reference for measuring the UV transmission.

Results : All of the sunglasses from IOTU shops met ANSI standards in transmission of UVA, UVB, while these percentages in miscellaneous vendors were 92.1% for UVB and 95.8% for UVA transmission (P<0.05). Mean of UVB transmission was 0.78% in IOTU shops and 1.8% in miscellaneous vendors. These percentages for UVA transmission was 0.92% and 7.1% respectively (P≤0.001). All of the nonstandard sunglasses regarding UVA transmission had graduated tints. 8.7% of graduated tints and 1.45% of smoky tints regarding UVB transmission did not meet the ANSI standards.

Conclusion : Although a number of sunglasses presented by miscellaneous vendors were not standard, but in cases that it is not possible to buy expensive sunglasses, it is advisable to use inexpensive ones with non-graduated tints for eye protection against UVR for daily and non-industrial use.

 

Iranian Journal of Ophthalmology 200820(4):40-43
Keywords: Sunglass, Ultraviolet Protection, UVA, UVB, Visible Light
Full-Text [PDF 86 kb]   (3598 Downloads)    
Type of Study: Original | Subject: General
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Keshtkar-Jafari A, Anvari F, Ameri A, Ahadzadegan I, Kia M, Ghotb S, et al . Ultraviolet Radiation Absorption by Sunglasses Available through Iranian Optician Trade :union: and Miscellaneous Vendors. Iranian Journal of Ophthalmology. 2008; 20 (4) :40-43
URL: http://irjo.org/article-1-191-en.html


Volume 20, Issue 4 (Iranian Journal of Ophthalmology 2008) Back to browse issues page
مجله چشم پزشکی ایران Iranian Journal of Ophthalmology
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