Short-sightedness. Someone with short-sightedness can see near objects clearly, but cannot focus properly on distant objects. This is caused by the eyeball being elongated, so that the distance between the lens and the retina is too great.
Radon Symptoms. What are the symptoms of radon poisoning? Since radon is the #2 cause of lung cancer in the U.S., respiratory ailments are the most likely signs of radon-related distress. A persistent cough, hoarseness, breathing difficulties, and recurring respiratory infections are all possible indications of radon poisoning.
At levels normally encountered in the environment, radon exposure causes no acute or subacute health effects, no irritating effects, and has no warning signs. The primary adverse health effect of exposure to increased levels of radon is lung cancer.