Our Team - Srinivasa Varadharajan

Srinivasa Varadharajan

Dr L Srinivasa Varadharajan, PhD

Designation: Research Scientist, Visual Optics and Psychophysics Laboratory
Email: rajan@lvpei.org
Location: Kallam Anji Reddy Campus, Hyderabad

Dr L Srinivasa Varadharajan holds a Ph. D. in physics from the University of Missouri in Rolla, USA; his dissertation was on the separation of the different components of the clinically obtained ERG using wavelets. He then did a post-doctoral fellowship under the tutelage of Prof John M Foley on psychophysical studies of lateral interactions in normal human subjects. Upon his return to India in 2004, he joined the Elite School of Optometry in Chennai as a lecturer and grew to head the Srimathi Sundari Subramanian Department of Visual Psychophysics. At the Elite School of Optometry, Rajan was a two-time winner of Dr. (Major) S. Srinivasan Memorial Award for the Best Junior Faculty. Before joining LVPEI, Rajan was an Associate Professor of Optometry in the Department of Opthalmology at SRM Medical College Hospital and Research Center.

Rajan's research interests are many and include computational neuroscience, aging of visual functions, adaptive optics, and development of novel, cost-effective vision testing and enhancement devices. In particular, he focuses on modeling cortical interactions in the human visual system of normal subjects and subjects with amblyopia, differences in the cortical magnification factor between the young and the elderly. For subjects with amblyopia, Rajan is keen on using videogames, especially stereo videogames, as a treatment option of amblyopia. His other interests include devising psychophysical techniques to detect glaucoma at a stage earlier than when the clinical symptoms show up.

Rajan is a founding member and the Optics Coordinator for the Common Minimum Optometry Curriculum for India, a group of interested individuals who have come together to standardize the curriculum for the profession of optometry in India, and was also the Scientific Committee Head for the Elite School of Optometry's International Vision Science and Optometry Conferences held in Chennai in 2005 and 2010.

Among other projects, Rajan headed industry sponsored projects for Essilor, BPL Techno-Vision Pvt Ltd and others. He also designed, developed, and validated the ESO Pocket Vision Screener, a compact vision screening chart using Sloan letters, and the Tamil logMAR Chart that is currently used in rural vision camps and installed at many places in Chennai. Recently, he and his students have devised a computer-based visual acuity measurement protocol using the ESO Pocket Vision Screener.