In cases where a laser source produces a pattern that is asymmetric on the retina, a modeling-based approach can be used to calculate a retinal thermal response to predict damage and make meaningful comparisons to exposure limit trends. The SESE (Scalable Effects Simulation Environment) model is a full 3D thermal finite-volume model that can simulate multiple independently controlled laser sources with unique wavelength, spatial profile, pulse duration, and power. The model is well suited to evaluate asymmetric sources since there is not an assumed axial symmetry and the spatial profile of the laser can be adjusted as a function of time. Several examples of asymmetric sources include multi-fiber bundle exposures, scanning beams, and scintillating sources. We use the SESE model to predict trends in retinal injury threshold for these cases and to help inform the laser safety community by providing estimates for safe and unsafe levels of exposure. We also introduce factors that inform hazard levels based on relative exposure conditions.
Skip Nav Destination
ILSC 2019: Proceedings of the International Laser Safety Conference
March 18–21, 2019
South Kissimmee, Florida, USA
ISBN:
978-1-940168-19-7
PROCEEDINGS PAPER
Simulation-based analysis of arbitrary asymmetric retinal images Available to Purchase
Chad A. Oian;
Chad A. Oian
711th Human Performance Wing, Airman Systems Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch (711 HPW/RHDO)
, JBSA Fort Sam Houston, Texas, USA
78234
Search for other works by this author on:
Benjamin A. Rockwell;
Benjamin A. Rockwell
711th Human Performance Wing, Airman Systems Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch (711 HPW/RHDO)
, JBSA Fort Sam Houston, Texas, USA
78234
Search for other works by this author on:
Robert J. Thomas
Robert J. Thomas
711th Human Performance Wing, Airman Systems Directorate, Bioeffects Division, Optical Radiation Bioeffects Branch (711 HPW/RHDO)
, JBSA Fort Sam Houston, Texas, USA
78234
Search for other works by this author on:
Published Online:
March 01 2019
Citation
Chad A. Oian, Benjamin A. Rockwell, Robert J. Thomas; March 18–21, 2019. "Simulation-based analysis of arbitrary asymmetric retinal images." Proceedings of the ILSC 2019: Proceedings of the International Laser Safety Conference. ILSC 2019: Proceedings of the International Laser Safety Conference. South Kissimmee, Florida, USA. (pp. 203). ASME. https://doi.org/10.2351/1.5118565
Download citation file:
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.