Rajkumar Raveendran, PhD

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)

LC Industries Postdoctoral Research Fellow

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 his Master of Science (thesis-based) and Doctorate of Philosophy in Vision Science under the guidance of Dr. William Bobier and Dr. Benjamin Thompson from the University of Waterloo. Dr. Raveendran worked as a teaching assistant for the Diseases of the Eyes, Strabismus Labs at the University of Waterloo for 6.5 years. He also worked in a hospital-based clinical optometric practice in India in various specialities such as Glaucoma, Neuro-ophthalmology and Pediatrics for a year. His PhD research was about understanding the causal relationship between sensory deficits such as reduced visual acuity, impaired binocular functions and impaired stability of fixational eye movements in observers with amblyopia. Previously it was thought that reduced visual acuity leads to impaired stability of fixation in the amblyopic eye. However, his research showed that impaired fixation stability could be responsible for reduced visual acuity in the amblyopic eye. It showed that impaired fixational eye movements should be considered as one of the important factors for the effective management of amblyopia.

Dr. Raveendran's CV
Publications View All

Gao, TY., Guo, CX.,  Babu, RJ.,  Black, JM.,  Bobier, WR., Chakraborty, A, ... Thompson, B. (2018). Effectiveness of a binocular video game vs placebo video game for improving visual functions in older children, teenagers, and adults with amblyopia: A randomized clinical trial. JAMA Ophthalmology. 10.1001/jamaophthalmol.2017.6090.

Raveendran, RN. (2017). Binocular vision and fixational eye movements. University of Waterloo

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

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

Raveendran, RN., Bobier, WR., Chow, A., Babu, RJ., & Thompson, B. (2015). Fixational eye movements during binocular rivalry. Investigative Ophthalmology & Visual Science, 56(7), 550.

Raveendran, RN., Babu, RJ., Hess, RF., & Bobier, WR. (2014). Transient improvements in fixational stability in strabismic amblyopes following bifoveal fixation and reduced interocular suppression. Ophthalmic and Physiological Optics, 34(2), 214–225.

Raveendran, RN. (2013). Fixational eye movements in strabismic amblyopia. University of Waterloo.

Raveendran, RN., Babu, R., Hess, R., & Bobier, W. (2013). Improvement of fixational stability in strabismic amblyopes with ocular alignment and binocular summation. Investigative Ophthalmology & Visual Science, 54(15), 3995.
Raveendran, RN., Bobier, WR., & Lakshminarayanan, V. (2012). Sensitivity Analysis of Schor’s adaptive model of accommodation-vergence. In Journal of Vision (Vol. 12, pp. 45–45).