Despite maximum flattening of the lens, the eye is not able to focus the light rays further back, and on to the retina. People with short sight are not able to see distant objects clearly. Short sight or near sight mean exactly what the terms suggest. You are sighted (you can see), near (short) distance objects.
Cost of Radon Testing Kits. You can buy radon testing kits from laboratories, hardware stores or other retail stores that sell items related to home maintenance. Their cost varies, ranging from about $7 to $30, depending on the type of radon detector.Radon detectors fall into one of two general categories: short-term or long-term. Short-term devices measure radon levels for two to seven days, while the long-term devices take measurements for at least three months.heir cost varies, ranging from about $7 to $30, depending on the type of radon detector. Radon detectors fall into one of two general categories: short-term or long-term. Short-term devices measure radon levels for two to seven days, while the long-term devices take measurements for at least three months.
1 Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually. 2  To find out about radon content in a city water system, call the local water provider. 3  It's wise to retest a home's radon level every year or two after a mitigation system is installed. Check the EPA's list of requirements for a complete, legal, effective radon mitigation system. 2  Be sure that the contractor has performed all the necessary tasks, affixed all labels, and explains the operation and maintenance of the system in detail. 3  Get a copy of the written instruction for future reference.