1. Rosenberg School of Optometry, University of the Incarnate Word, San Antonio, Texas, USA,
2. Present address: Oklahoma College of Optometry, Northeastern State University, Talequah, Oklahoma, USA,
3. WESMDPA Glaucoma Service, Baptist Medical Center, San Antonio, Texas, USA,
4. Department of Biomedical Engineering, The University of Texas at San Antonio, San Antonio, Texas, USA,