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.
Radon is a naturally occurring radioactive gas and comes from the natural breakdown (radioactive decay) of uranium. It is usually found in igneous rock and soil, but in some cases, well water may also be a source of radon. EXPOSURE: The primary routes of potential human exposure to radon are inhalation and ingestion.