Schematic representation of laser pattern and the extent of tissue damage according to optical coherence tomography.

<p>(a) Color fundus photograph of laser application using PASCAL (Streamline 577™ (Topcon Medical Laser Systems, Inc., Santa Clara, CA, USA) with Endpoint Management (EM) using a 2×3 square pattern and single shot using the PASCAL short-duration method (PSS-SDM) imaged immediately after laser treatment. (b) Schematic representation of the laser pattern in the retina. The laser application settings were fixed at 200 μm (spot size), 20 ms, and a wavelength of 577 μm. Numbers 1 to 6 represent laser spots using EM (2×3 square pattern), while 7 to 14 represent laser spots created by PSS-SDM. (c) Optical coherence tomography immediately after laser application was performed with slices containing laser spots, and the extent of tissue damage at the spot lesion were identified. Percentages indicate the energy setting at each lesion.