Raising awareness of blindness as another smoking-related condition: a public health role for optometrists?
Raising awareness of blindness as another smoking-related condition: a public health role for optometrists?
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DOI:
10.1111/j.1444-0938.2008.00283.x
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发表时间:
2009-01-01
影响因子:
1.9
通讯作者:
Eong, Kah-Guan Au
中科院分区:
文献类型:
--
作者:
Loo, Diana L. S.;Ng, Deborah H. L.;Eong, Kah-Guan Au
Cigarette smoke contains as many as 4,000 toxic active compounds that have the potential to affect ocular tissues, mainly via ischaemic or oxidative mechanisms. 1 Of the ocular conditions associated with cigarette smoking, cataract and age-related macular degeneration (AMD) are the two most important, as they are the leading causes of blindness in developing and developed nations, respectively. 1, 2 As cataract blindness can be treated only surgically, the enormous number of cataract surgeries that must be performed worldwide places heavy demands on the health-care systems of many countries, especially those in the developing world. 3 Accordingly, the identification and modification of cataract risk factors have the potential for a significant public health impact on the magnitude of the problem. Besides cigarette smoking, other risk factors for cataract include high alcohol intake, diabetes mellitus, ultraviolet-B exposure, use of certain medications such as steroids, ocular surgery and trauma. 3 One study found that among the modifiable risk factors associated with cataract, cigarette smoking is the largest attributable risk factor, accounting for 17 per cent of nuclear cataracts. 4 The level of nuclear sclerosis has also shown a significant correlation with the number of pack-years smoked and smoking also increases the frequency of posterior subcapsular opacities. 5 Moreover, cigarette smokers are at a higher risk of developing cataract at an earlier age than are non-smokers. 6, 7 It therefore appears that smoking cessation is a viable strategy for cataract prevention. 3