Title: Charles J. Koester research records
Description: Laboratory notebooks, correspondence, drawings, photographs, and slides documenting Koester's work as an optical physicist, first for the American Optical Corporation and then as a faculty member in the Columbia University Department of Ophthalmology.  His research was largely devoted to creating new types of microscopes and lenses for use in the treatment of patients.
Subjects: Lasers in medicine, Lasers in ophthalmology, Ophthalmology, Research, Optical physics and engineering, Columbia University. Department of Ophthalmology, Columbia University
People: Charles J. Koester
Time periods: 20th century