1. From the Department of Ophthalmology, University Hospital Jena, Jena, Germany;
2. Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois; 3Department of Ophthalmology, Columbia University, New York, New York;
3. Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, Iowa; and
4. Department of Physiology II/Biomolecular Photonics Group, University Hospital Jena, Jena, Germany.