Rajkumar Raveendran, PhD FAAO

Picture of Dr. Rajkumar Raveendran Contact Rajkumar.Raveendran@envisionus.com 316-440-1533 Expertise And Interests
  • Oculomotor functions such as fixational eye movements, saccades, and vergence eye movements
  • Amblyopia
  • Non-invasive brain stimulation techniques such as Transcranial Electrical Stimulation (tES) and Transcranial Magnetic Stimulation (TMS)

LCI Foundation Research Associate

Dr. Rajkumar Raveendran is an LC Industries Research Fellow with the Envision Research Institute, working under the mentorship of Dr. Benjamin Thompson, an Associate Professor at the University of Waterloo, Ontario, Canada. He earned his Bachelor of Science in Optometry from Elite School of Optometry, India, and Doctor of Philosophy in Vision Science under the guidance of Dr. William Bobier and Dr. Benjamin Thompson from the University of Waterloo, Canada. Dr. Raveendran’s lab (Cortical Functioning lab) focusses on developing a new rehabilitation strategy using transcranial direct current stimulation (tDCS) for people who lost central vision due to macular degeneration. tDCS is a non-invasive neuro-modulation technique where mild electrical current changes the cortical excitability. Preliminary studies at Dr. Raveendran’s lab showed that tDCS has a potential to reduce visual crowding in peripheral vision when it is applied to visual cortex. Dr. Raveendran’s research also focusses on understanding how eye movements such as fixational eye movements could influence visual crowding in the central and peripheral vision.

Dr. Raveendran's CV
Publications View All

Raveendran, R.N., Tsang, K., Tiwana, D., Thompson, B. (2019) Anodal transcranial direct current stimulation reduces collinear lateral inhibition in normal peripheral vision. bioRxiv. doi: https://doi.org/10.1101/574590.

Raveendran, R.N., Bobier, W., & Thompson, B. (2019). Binocular vision and fixational eye movements. Journal of Vision, 19(4), 1-15.

Raveendran, R.N., Bobier, W., & Thompson, B. (2019). Reduced amblyopic eye fixation stability cannot be simulated using retinal-defocus-induced reductions in visual acuity. Vision Research, 154, 14-20.

Raveendran, R.N., Bobier, W.R., & Thompson, B. (2017). Impaired fixation stability in amblyopia cannot be explained by the visual acuity impairment. Journal of Vision, 17(7), 14.

Raveendran, R.N., Bobier, W.R., Babu, R.J., & Thompson, B. (2016). Interocular contrast differences and the stability of fixational eye movements. Investigative Ophthalmology & Visual Science, 57(12), 3087.

Raveendran, R.N., Bobier, W.R., Chow, A., Babu, R.J., & Thompson, B. (2015). Fixational eye movements during binocular rivalry. Investigative Ophthalmology & Visual Science, 56(7), 550.

Raveendran, R.N., Babu, R.J., Hess, R.F., & Bobier, W.R. (2014). Transient improvements in fixational stability in strabismic amblyopes following bifoveal fixation and reduced interocular suppression. Ophthalmic and Physiological Optics, 34(2), 214-225.