Local allergies are common, characterized by redness of the eye and itching of the eyes. Excessive tearing, eye pain, or lid crusting may occur. Burning, stinging, international body sensation , blurred vision, and itching have already been observed.. Alpha Agonists Alpha agonists became available in the 1990s and so are used today while third-line drugs, with prostanoids being first collection and beta blockers getting second line. These include various formulations of brimonidine . Alpha agonists function to both decrease production of fluid and increase drainage.Some Us citizens were shocked by the labels’ graphic pictures, which show rotting tooth, diseased lungs, and even a smoker’s corpse. But a lot more than 40 countries require cigarette warning labels at least as graphic the nine new U.S. Labels. Images: World’s most gruesome tobacco warning labels The U.S. Warnings – the biggest change to the labels in a quarter-hundred years – aim to use dread and disgust to deter cigarette smoking. The FDA estimates the labels will cut the true amount of smokers by 213,000 in 2013, with additional reductions through 2031.