This small sculpture is from the series of "eye" forms inspired by Littleton's interest in the refractive properties of glass. Each hemisphere was cut from a thick-walled ovoid form made on the blowpipe. As Littleton explained it, "The cut surface lets you see into the wall of the hemisphere, and the light is concentrated by the curving sides and reflected back out the cut edge. This gives a rich, deep, intense colored circle of light."