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.
The risk to the human body from radon gas is primarily to the lung, but the danger is not simply through breathing in the gas. In fact, radon gas is not absorbed by the body and is exhaled immediately! The process is a little more complicated.