Keratoconus (KC) is a disorder of the eye which results in progressive thinning of the cornea. This may result in blurry vision, double vision, nearsightedness, astigmatism, and light sensitivity. Usually both eyes are affected. In more severe cases a scarring or a circle may be seen within the cornea.
On the plus side Hardie Board is primarily made of concrete. It is a fibrous concrete board that termites don't eat. This is good news for warmer climates where termites stay active most of the year. Hardie siding is also impervious to moisture. You can put it in a pail of water and leave it for as long as you like and it will not become saturated.
While wood lap siding is traditional, it's also possible to find cement, vinyl, and engineered wood products such as HardiePlankÂ® used for siding. These products can be more environmentally friendly because they are not made with virgin wood, and they can also be more durable than traditional wood siding products.