Directional Optical Coherence Tomography Reveals Reliable Outer Nuclear Layer Measurements.

Purpose: Directional Optical Coherence Tomography (D-OCT) is a method used to optically segment and identify the outer nuclear layer (ONL) in vivo. The purpose of this study was to determine the repeatability and reproducibility of D-OCT ONL thickness measurements in healthy eyes.

Methods: Sixteen healthy eyes of sixteen subjects were imaged using the Cirrus SD-OCT.