(June 2010) (Learn how and when to remove this template message) Base curve radius, or simply base curve, abbreviated BCR or BC, is the measure of one important parameter of a lens in optometry. On a spectacle lens, it is the flatter curvature of the front surface.
Green stool â when your feces look green â is usually the result of something you ate, such as spinach. Certain medications or iron supplements can also cause green stool. Newborns pass a dark green stool called meconium, and breast-fed infants often produce yellow-green stools. In older children and adults, green stool is uncommon. It's rarely cause for concern. Causes.
1. Figure out your stool's baseline color. The ideal poop is medium brown, but some variation can be found among healthy people. 1  Green or yellow stool is usually caused by your bowels moving too fast, as with mild diarrhea. 2  Bile, the main pigment in poop, starts out green and turns brown over time. 3  Pale gray or yellow feces may indicate liver disease.