Home Personnel Roger Li

Dr. Roger Li, OD, PhD [EMAIL]

Academic Career Path

• Roger Li received a professional B.Sc. degree in Optometry (1995) and a Ph.D. degree (1999) from the Hong Kong Polytechnic University. Upon receiving his Doctoral degree, he spent the following two years working at the Centre of Myopia Research at the same institute. Dr. Li was a clinical instructor teaching clinical optometry and supervising intern clinicians at the University Optometry Clinic from 1995-2000.

• Dr. Li moved to the University of Houston College of Optometry in 2001 to pursue further Post-Doctoral research training in the area of spatial vision. He then joined the University of California-Berkeley School of Optometry in late 2001 as Research Associate, and later Associate Specialist conducted a series of pioneering perceptual learning amblyopia treatment studies.

• In late 2008, Dr. Li joined the Department of Psychology at the University of Hong Kong as Research Assistant Professor of Visual Perception, where he taught the course Biological Neuroscience. Dr. Li returned to continue his research at the University of California-Berkeley School of Optometry in mid 2009.

• Dr. Li subspecializes in amblyopia treatment, binocular vision therapy and clinical visual electrophysiology. He has published numerous research articles in many high impact medical and scientific journals, and has frequently served as reviewer for many international journals and grant funding organizations. He also serves on several Journal Editorial Boards (Frontiers in Perception Science & World Journal of Ophthalmology).

• Dr. Li’s research focuses on amblyopia treatment, binocular vision therapy, enhancement of visual functions, spatial vision, clinical vision science, visual electrophysiology, clinical optometry, retina and brain imaging, myopic control, visual aging and telemedicine.

Professional and Scholarly Activities

Clinical License

• Registered Optometrist (Part I Schedule), Optometrists Board of Hong Kong, HK (1995)

Memberships

• Member, Hong Kong Society of Professional Optometrist, HK (2001-2002)
• Member, Association for Research in Vision and Ophthalmology (ARVO), USA (1997-)
• Member, Vision Sciences Society (VSS), USA (2005-)
• Member, Society for Neuroscience (SfN), USA (2008-)
• Member, Oversea Chinese Association for Vision and Eye Research, USA (2007-present)

Editorial Boards

1. Frontiers in Perception Science (2/2010-)

2. World Journal of Ophthalmology (11/2011-11/2015)

Research Grant Reviewer (ad-hoc)

• Research into Aging (UK)

Medical & Scientific Journal Reviewer (5/2004-3/2012: n>120)

1. American Journal of Psychology
2. Behavioural Brain Research
3. Clinical Ophthalmology
4. Clinical Optometry
5. Expert Review of Ophthalmology
6. Frontiers in Perception Science
7. Investigative Ophthalmology and Visual Science (IOVS)
8. Journal of American Association for Pediatric Ophthalmology and Strabismus (JAAPOS)
9. Journal of Neurophysiology
10. Journal of Vision (JOV)
11. Optometry and Vision Science (OVS)
12. Restorative Neurology and Neuroscience (RNN)
13. Seeing and Perceiving
14. Vision Research
15. World Journal of Ophthalmology

PhD Thesis Committee – External Examiner

International Conference Moderator

• ARVO annual meeting (2004) - Amblyopia Poster Session

Invited Symposiums

• SfN annual meeting (2010) – Neural Plasticity
• VSS annual meeting (2007) - Classification Image

Invited Review Papers

• Ophthalmology Update (2012)
• Journal of Neuroscience (2010)
• Philosophical Transactions of the Royal Society B: Biological Sciences (2008)

Clinical Interests and Specialties

• Amblyopia Treatment*
• Binocular Vision Therapy*
• Visual Electrophysiological Diagnostic Procedures*
• Clinical Visual Psychophysics*
• Specialized Visual function Assessment
• Geriatric Vision Assessment
• Myopia Control
• Virtual Clinic & Telemedicine

Research Interests

Visual Science

• Amblyopia, perceptual learning, receptive fields, hyperacuity, contrast perception, letter recognition, visual crowding, visual counting, shape perception, blur detection, face recognition, spatial and pattern vision, video games & visual functions, extra-striate visual processing, computational modeling of visual processing

Visual Electrophysiology & Neurophysiology

• Vernier VEP, multifocal VEP, clinical visual electrophysiology, brain imaging

Clinical Optometry & Translational Research

• Amblyopia treatment, enhancement of visual functions, visual aging, clinical vision science, myopia control, dynamic accommodation, refractive error and visual functions, retinal imaging, telemedicine

Recent conference papers

Publications

Use Medline to find abstracts of these publications, or e-mail oroger@berkeley.edu.

Since 2000 (impact factor [2004] <2006> (2007) {2009}”2010”)

	Current Eye Research (1.44)			1
	IEEE Transactions on Systems, Man & Cybernetics <1.45>			1
** ***	Investigative Ophthalmology & Visual Science <3.77> Journal of Neuroscience (7.45)			6 2
**	Journal of Vision (3.79)			3
***	Nature Neuroscience [16.98]			1
	Ophthalmic & Physiological Optics <1.10>			1
	Ophthalmology Update - not indexed by ISI			1
**	Philosophical Transactions of the Royal Society B “6.05”			1
***	PLoS Biology {12.683}			1
**	PloS One “4.41”			2
	Scientific Reports - IF 2013			1
*	Vision Research {2.2888}			9
		Total (Submitted / Under Peer-Review) Impact Factor (Total)	30 0 117

Total Impact Factor (First-Authored Papers) 64 (/11[13] = 5.8 ea)

Total Impact Factor (NOT First-Authored Papers) 53 (/17= 3.1 ea)

1. Li, R. W., Young, K. G., Klein, S. A., & Levi, D. M. (will be submitted 2015 winter) What does the left eye do when the right eye learns?

2. Li, R. W., Tran, T., Craven, A. Chat, S. W., Gustafson, K., & Levi, D. M (will be submitted 2015 Winter) TBA

3. Li, R. W., Leung, T. W., Kee, C. S. & Levi, D. M (will be submitted 2015 Summer) TBA

4. Li, R. W., Nguyen, C., Chat, S. W., Tran, T., & Levi, D. M (will be submitted 2014 Winter) TBA

5. Li, R. W., Nguyen, C., Chat, S. W., Tran, T., & Levi, D. M (will be submitted 2014 Summer) TBA

6. Li, R. W., Hoenig, P., Lee,D., & Levi, D. M (will be submitted 2013 winter) TBA

7. Li, R. W., Wei, L., Ngo, C., & Levi, D. M. (will be submitted 2013 Summer) TBA.

8. Li, R. W., Ngo, C., & Levi, D. M (will be submitted 2012 winter) TBA

9. Li, R. W., Saarinen, J., Ngo, C., & Levi, D. M. (submitted 2012). The Specificity of Learning Position Discrimination: Noise and Stimulus Features

10. Chung, S. T. L., Li, R. W, & Levi, D. M. (2012) Learning to identify near-acuity letters, either with or without flankers, results in improved letter size and spacing limits in adults with amblyopia. PLoS One, 7, e35829.

11. Li, R. W., Ngo, C., Nguyen, J. & Levi, D. M (2012) Video game play induces plasticity in the visual system of adults with amblyopia: Video games improve “lazy eye” in adults. Ophthalmology Update, 10, 29-33 [Invited Excerpt Review]

12. Li, R. W., Brown, B., Edwards, M., Ngo, C., Chat, S. W., & Levi, D. M. (2012) Reduced sampling efficiency causes degraded Vernier hyperacuity with normal aging: Vernier acuity in positional noise. Scientific Reports 2, e300.

13. Li, R. W., Ngo, C., Nguyen, J. & Levi, D. M. (2011) Video game play induces plasticity in the visual system of adults with amblyopia. PLoS Biology, 9, e1001135.

14. Bavelier D., Levi D. M., Li R. W., Dan Y. & Hensch T. K. (2010) Removing brakes on adult brain plasticity: from molecular to behavioral interventions. Journal of Neuroscience 30, 14964-14971

15. Li, R. W., MacKeben M., Chat, S. W., Kumar, M., Ngo, C. & Levi, D. M. (2010) Aging and Visual Counting. PloS One, 18, 5, e13434.

16. Levi, D. M., & Li, R. W. (2009) Perceptual Learning as a potential treatment for amblyopia. Vision Research, 21, 2535-2549

17. Levi, D. M., & Li, R. W. (2009) Improving the performance of the amblyopic visual system. Philosophical Transactions of the Royal Society B: Biological Sciences, 364, 399-407. [invited review paper]

18. Li, R. W., Klein, S. A., & Levi, D. M. (2008) Prolonged perceptual learning of positional acuity in adult amblyopia: Perceptual template retuning dynamics. Journal of Neuroscience 28, 14223-14229.

19. Chung, S. T. L., Li, R. W, & Levi, D. M. (2008) Learning to Identify Near-Threshold Luminance-Defined and Contrast-Defined Letters in Observers with Amblyopia. Vision Research, 48, 2739-2750.

20. Chung, S. T. L., Li, R. W, & Levi, D. M. (2008) Crowding between first- and second-order letter stimuli in amblyopia. Vision Research 48, 788-798 [Cover Picture]

21. Li, R. W., Provost, A., & Levi, D. M. (2007) Extended perceptual learning results in substantial recovery of positional acuity and visual acuity in juvenile amblyopia. Investigative Ophthalmology and Visual Science, 48, 5046-5051

22. Wei, L., Levi, D. M., Li, R. W., & Klein, S. A. (2007) Feasibility study on a hyper-acuity device with motion uncertainty: two-point stimuli. IEEE Transactions on Systems, Man and Cybernetic, 37, 385-97

23. Chung, S. T. L., Li, R. W, & Levi, D. M. (2007) Crowding between first- and second-order letter stimuli in normal foveal and peripheral vision. Journal of Vision, 7, 1-13.

24. Chung, S. T. L., Li, R. W, & Levi, D. M. (2006) Identification of contrast-defined letters benefits from perceptual learning in adults with amblyopia. Vision Research, 46, 3853-3861.

25. Li, R. W., Klein S. A., & Levi, D. M. (2006) The ‘receptive field’ for position acuity changes with feature separation. Journal of Vision, 6, 311-321.

26. Chung, S. T. L., Levi, D. M., & Li, R. W. (2006) Learning to identify contrast-defined letters in peripheral vision. Vision Research, 46, 1038-1047.

27. Li, R. W., Young, K. G., Hoenig, P., & Levi, D. M. (2005) Perceptual learning improves visual performance in juvenile amblyopia. Investigative Ophthalmology and Visual Science, 46, 3161-3168.

28. Levi, D. M., Li, R. W., & Klein, S. A. (2005) “Phase capture” in amblyopia: the influence function for sampled shape. Vision Research, 45, 1793-1805.

29. Li, R. W., & Levi, D. M. (2004) Characterizing the mechanisms of improvement for position discrimination in adult amblyopia. Journal of Vision, 4, 476-487.

30. Li, R. W., Levi, D. M & Klein, S. A. (2004) Perceptual learning improves efficiency by re-tuning the “template” for position discrimination. Nature Neuroscience. 7, 178-183.

31. Levi, D. M., Li, R. W., & Klein, S. A. (2003) “Phase capture” in the perception of interpolated shape: cue combination and the influence function. Vision Research, 43, 2233-2243.

32. Edwards, M.H., Lam, C. S. Y., Li, R. W. (2003) Author Response: A Reanalysis of Myopia Control with Progressive Addition Lenses. Investigative Ophthalmology and Visual Science (Electronic letters)

33. Wolffsohn, J. S., Gilmartin, B., Li, R. W., Edwards, M., Chat, S., Lew, J., & Yu, B. (2003). Nearwork-induced transient myopia in preadolescent Hong Kong Chinese. Investigative Ophthalmology and Visual Science, 44, 2284-2289.

34. Schmid, K. L., Li, R. W., Edwards, M. H., & Lew, J. K. F. (2003). The expandability of the eye in childhood myopia. Current Eye Research, 26, 65-71.

35. Edwards, M. H., Li, R. W., Lam, C. S. Y., Lew, K. F. & Yu, S.Y. (2002). The Hong Kong progressive lens myopia control study: study design and main findings. Investigative Ophthalmology and Visual Science, 43, 2852-2858.

36. Schmid, K. L., Iskander, D. R., Li, R. W., Edwards, M., & Lew, J. K. F. (2002). Blur detection thresholds in childhood myopia: single and dual target presentation. Vision Research, 42, 239-247.

37. Li, R. W., Edwards, M. H., & Brown, B. (2001). Variation in vernier evoked cortical potential with Age. Investigative Ophthalmology and Visual Science, 42, 1119-1124.

38. Li, R. W., & Edwards, M. H. (2001). Interfacing the Shin-Nippon Natural Vision Autorefractor SRW-5000 with a Personal Computer. Ophthalmic and Physiological Optics, 21, 114-116.

39. Li, R. W., Edwards, M. H., & Brown, B. (2000). Variation in Vernier acuity with age. Vision Research, 40, 3775-3781.

40. Li, R. W. (1999). Psychophysical and electrophysiological investigation of age-related variations in Vernier acuity. Ph.D. Thesis. School of Optometry. The Hong Kong Polytechnic University, Hong Kong.