What does it mean when a person has light blue sclera of the eyes?

See below; The white sclera takes on a bluish tint when this normally thick tissue thins. The sclera becomes translucent, allowing the underlying tissue to show through. There are lots of reasons someone can have blue "whites". Anything that results in a thinning of the sclera could cause it.While most cases of sclera discoloration are benign, they can be a sign of something more serious. See your doctor.