Anterior Chamber Angle Evaluation with Fourier-Domain Optical Coherence Tomography

Figure 2

Frame-averaged cross-sectional OCT image of the nasal angle in a normal subject. The high resolution helps to visualize the termination of the endothelium and Descemet’s membrane (Schwalbe’s line, SL), which is a useful landmark on these images. Also visible are the external limbus (EL), Schlemm’s canal (SC), and the trabecular meshwork (TM). The scleral spur (SS) is faintly visible in this case. The angle recess, iris root, and ciliary body are not visible due to blocking by the sclera. The angle opening distance between SL and the anterior surface of the iris (AOD-SL, dotted line) was 361 μm, indicating that the angle is open.