1. Medical Laser Center Lübeck, Lübeck, Germany;
2. Institute of Biomedical Optics, University of Lübeck, Lübeck, Germany;
3. Department of Ophthalmology, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck, Germany;
4. 711th Human Performance Wing, Airman Systems Directorate, Bioeffects Division, Optic Radiation Bioeffects Branch, JBSA, Fort Sam Houston, TX, USA