The region at the periphery of the retina where retinal stem cells are located. It is spatially ordered with respect to cellular development and differentiation, with the youngest and least-determined stem cells closest to the periphery, the proliferative retinoblasts in the middle, and postmitotic cells at the central edge. [ http://www.ncbi.nlm.nih.gov/pubmed/15844194 ]

This is just here as a test because I lose it