Light from an object passes through the cornea which is a transparent dome like structure covering the iris. The light rays are refracted by the cornea onto the lens. The light rays are refracted a second time whilst passing through the lens and focussed onto the retina â the light sensitive part of the eye.
The average Radon mitigation cost in Portland, Oregon, or Vancouver, Washington is between $800 to $2,500 with an average of $1,200.
In general, costs can range from approximately $800-$2500, with the average reduction system costing approximately $1500. The PBS series â Ask This Old House â visited a home in Minneapolis to install a radon mitigation system. The episode covers how radon systems are properly designed and installed.