effects of tobacco on the nervous system Direct and Indirect (via nNOS) Sympathomimetic Nicotine From img032.GIF

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I needed my reading glasses to use the touchscreen display

This dual-drop approach ensures maximum pupil dilation in shorter timeframes, even for patients with dark-colored irises or age-related changes that resist single-agent dilation

However, long-term use can cause extensive damage that might take years to heal

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Health.com: Common smoking triggers -- and how to fight them In the new study, published this week in the Annals of Internal Medicine, 568 adult smokers who were otherwise healthy wore a 21-milligram nicotine patch (Nicoderm CQ brand) for eight weeks