Abstract
This chapter reports the use of an infrared eye tracker in providing more objective and quantitative results in evaluating the reading performance of a congenital nystagmus subject. A 14-year-old boy was fitted with silicone hydrogel contact lens to correct his high refractive errors. His distance visual acuities were 6/19 (both spectacles and contact lens), and his near visual acuity improved from N10 with spectacles to N8 after 10 weeks of wearing the prescribed contact lens. His reading speed doubled from 44 to 105 words per minute (wpm) with contact lens. The improvement in reading speed was consistent with the eye movement recording results which revealed the staircase eye movement pattern, typically found in individuals with normal vision. Furthermore, his mean fixation duration during reading was found to be longer with contact lens compared to wearing spectacles.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Abadi, R. V. (2002). Mechanisms underlying nystagmus. Journal of Royal Society of Medicine, 95(5), 231–234.
Abadi, R. V., & Bjerre, A. (2002). Motor and sensory characteristics of infantile nystagmus. British Journal of Ophthalmology, 86(10), 1152–1160.
Abadi, R. V., & King-Smith, P. E. (1979). Congenital nystagmus modifies orientational detection. Vision research, 19(12), 1409–1411.
Biousse, V., Tusa, R. J., Russel, B., Azran, M. S., Das, V., Schubert, M. S., Ward, M., & Newman, N. J. (2004). The use of contact lens to treat visually symptomatic congenital nystagmus. Journal of Neurology, Neurosurgery and Psychiatry, 75, 314–316.
Chung, S. T. L., Mansfield, J. S., & Legge, G. E. (1998). Psychophysics of reading: XVIII The effect of print size on reading speed in normal peripheral vision. Vision Research, 38, 2949–2962.
Ciuffreda, K. J., Bahill, A. T., Kenyon, R. V., & Stark, L. (1976). Eye movements during reading: Case reports. American Journal of Optometry & Physiological Optics, 53(8), 389–395.
Dell’Osso, L. F., Traccis, S., Abel, L. A., & Erzurum, S. I. (1988). Contact lenses and congenital nystagmus. Clinical Vision Sciences, 3, 229–232.
Dickinson, C. M., & Abadi, R. V. (1985). The influence of nystagmoid oscillation on contrast sensitivity in normal observers. Vision Research, 25(8), 1089–1096.
Duchowski, A. (2003). Eye tracking methodology: Theory and practice. Springer-Verlag.
Frohman, T. C., Frohman, E. M., O’Suilleabhain, P., Salter, A., Dewey, R. B. Jr., Hogan, N., Galetta, S., Lee, A. G., Straumann, D., Noseworthy, J., Zee, D., Corbett, J., Corboy, J., Rivera, V. M., & Kramer, P. D. (2003). Accuracy of clinical detection of INO in MS: Corroboration with quantitative infrared oculography. Neurology, 61(6), 848–850.
Kudo, Y., Kaga, K., Ito, K., & Nakamura, M. (1995). Ocular movement during reading in patients with congenital nystagmus. Acta Otoryngology (Stockh), 520, 281–284.
Lovie-Kitchin, J. E., & Woo, G. C. (1987). Effect of magnification and field of view on reading speed using a CCTV. In G. C. Woo (Ed.), Low vision: Principles and application. New York: Springer-Verlag.
Lovie-Kitchin, J. E., Bevan, J. D., & Hein, B. (2001). Reading performance in children with low vision. Clinical and Experimental Optometry, 84(3), 148–154.
Reddy, S. C., & Tan, B. C. (2001). Causes of childhood blindness in Malaysia: Results from a national study of blind school students. International Ophthalmology, 24, 53–59.
Rubin, G. S., & Turano, K. (1994). Low vision reading with sequential word presentation. Vision Research, 34, 1723–1733.
Sweeney, J. A., Levy, D., & Harris, M. S. (2002). Commentary: Eye movement research with clinical populations. Progress in Brain Research, 140(2002), 507–522.
Tabibi, G., Wang, Z. I., & Dell’Osso, L. F. (2008). Infantile nystagmus syndrome: Broadening the high-foveation quality field with contact lenses. Clinical Opthalmology, 2(3), 585–589.
van der Geest, J. N., & Frens, M. A. (2002). Recording eye movements with video-oculography and scleral search coils: A direct comparison of two methods. Journal of Neuroscience Methods, 114(2), 185–195.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer International Publishing Switzerland
About this chapter
Cite this chapter
Shahimin, M. et al. (2014). The Use of an Infrared Eye Tracker in Evaluating the Reading Performance in a Congenital Nystagmus Patient Fitted with Soft Contact Lens: A Case Report. In: Horsley, M., Eliot, M., Knight, B., Reilly, R. (eds) Current Trends in Eye Tracking Research. Springer, Cham. https://doi.org/10.1007/978-3-319-02868-2_8
Download citation
DOI: https://doi.org/10.1007/978-3-319-02868-2_8
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-02867-5
Online ISBN: 978-3-319-02868-2
eBook Packages: Humanities, Social Sciences and LawEducation (R0)