Fig. 1
From: Regenerative capacity of the corneal transition zone for endothelial cell therapy
Human transition zone variation. a Typical TZ morphology with distinguishable smooth TZ (double-head arrows) between PE with cobblestone pattern of endothelial cells and TM with trabeculae inserts and bridges. b Indistinguishable TZ with an unclear border of PE. c Wide TZ with average width > 500 μm. d Absence of TZ, with a deep cleft located between TM and PE. CEC, corneal endothelial cells; PE, peripheral endothelium; TM, trabecular meshwork; TZ, transition zone; M, male; F, female. Scale bars, 300 μm