Does Training in the Use of a Magnifier Improve Efficiency?

Authors: Norliza Mohamad Fadzil, Kerry Fitzmaurice, Linda Malesic

Abstract:

Provision of optical devices without proper instruction and training may cause frustration resulting in rejection or incorrect use of the magnifiers. However training in the use of magnifiers increases the cost of providing these devices. This study compared the efficacy of providing instruction alone and instruction plus training in the use of magnifiers. 24 participants randomly assigned to two groups. 15 received instruction and training and 9 received instruction only. Repeated measures of print size and reading speed were performed at pre, post training and follow up. Print size decreased in both groups between pre and post training maintained at follow up. Reading speed increased in both groups over time with the training group demonstrating more rapid improvement. Whilst overall outcomes were similar, training decreased the time required to increase reading speed supporting the use of training for increased efficiency. A cost effective form of training is suggested.

Keywords: Low vision, magnification, training, reading.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1086185

References:

[1] C. Kupfer, The National Eye Institute-s low vision education program: improving quality of life (editorial). Lancet Neurol, 2000, 107(2), 229- 230.
[2] M.P.J. Vervloed, N.M.A. Janssen, H. Knoors, Visual rehabilitation of children with visual impairments. J Dev Behav Peds, 2006. 27(6), 493- 506.
[3] Nilsson, U. L., and Nilsson, S. E. (1986). Rehabilitation of the visually handicapped with advanced macular degeneration. A follow-up study at the Low Vision Clinic, Department of Ophthalmology, University of Linkoping. Docum Ophthalmol, 62, 345-67.
[4] Raasch, T.W., Leat, S.J., Kleinstein, R.N., Bullimore, M.A., and Cutter, G.R. (1997). Outcomes of low vision-vision services. J Am Optom Assoc, 68, 287-93.
[5] Mancil, G.L., and Nowakowski, R. (1986). Evaluation of reading speed with four low vision aids. Am J Optom Physiol Opt, 63, 708-13.
[6] Dickinson, C. (1998). Low Vision: Principles and Practice. (4th ed). London: Butterworth- Heinemann.
[7] Herreros, M.J.G., Mateus, G.G., Garcia, M.A., Ramon, M.P., and Mosquete, J.V. (1998). Characteristics of reading performed by lowvision persons. In: Vision -96, Book 2, International Conference on Low Vision Proceedings. Madrid: Organization of Nacional de Ciegos Espanoles, 28-35.
[8] Watson, G., and Berg, R.V. (1983). Near training techniques. In T.T. Jose (Ed.). Understanding low vision (pp 317-362). New York: American Foundation for the Blind.
[9] Backman, O. (1994). Reading skills, reading training and technology for the visually handicapped-prospects for the 1990s. Proceedings from the International conference on low vision: Vision 1993, Groningen, Netherland. In A.C. Kooijman, P.L. Looijestijn, J.A. Welling and G.J. van der Wildt (Eds.), Low Vision. Research and New Developments in Rehabilitation, Vol 11 (Rehabilitation of Visual Impairment, part III). Amsterdam, Netherlands: IOS Press.
[10] Scott, I.U., Smiddy, W.E., Schiffman, J., Feuer, W.J., and Pappas, C.J. (1999). Quality of life of patients with low vision and the impact of lowvision services. Am J Ophthalmol, 128, 54-62.
[11] Watson, G.R., Schuchard, R., Wyse, E., and Del-Aune, W. (2000). The relationship of reading ability to scotoma and preferred retinal locus characteristics. Annual Meeting of the Rehabilitation Research and Development Service of the Department of Veterans Affairs, Washington.
[12] Nilsson, U.L. (1990). Visual rehabilitation with and without educational training in the use of optical aids and residual vision. A prospective study of patients with advanced age-related macular degeneration. Clin Vis Sci, 6, 3-10.
[13] Cheong, A.M.Y., Lovie-Kitchin, J.E., and Bowers, A.R. (2005). Short term in office practice improves reading performance with stand magnifiers for people with AMD. Optom Vis Sci, 82(2), 114-127.
[14] Stelmack, J.A., Tang, X.C., Reda, D.J., Rinne, S., Mancil, R.M., Massof, R.W., and LOVIT Study Group. (2008). Outcomes of the veterans affairs low vision intervention trial (LOVIT). Arch Opthalmol, 126(5), 608-17.
[15] Ahn, S.J., Legge, G.E., and Luebker, A. (1995). Printed cards for measuring low-vision reading speed. Vision Res, 35, 1939-1944.
[16] Lovie-Kitchin, J.E., Bowers, A.R., and Woods, R.L. (2000). Oral and silent reading performance with macular degeneration. Ophthalmic Physiol Opt, 20, 360-70.
[17] Cheong, A.M.Y., Lovie-Kitchin, J.E., and Bowers, A.R. (2002) Determining magnification for reading with low vision. Clin Exp. Optom, 85, 229-237.
[18] McMahon, T.T., and Spigelman, V. (1989). Reading with a stand magnifier: 1 Effect of text configuration and experience on normal subjects. J Vis Rehab, 3, 19-23.
[19] Bowers, A.R. (2000a). Eye movements and reading with plus-lens magnifiers. Optom Vis Sci, 77, 25-33.
[20] Bowers, A.R., Cheong, A.M.Y., and Lovie-Kitchin, J.E. (2002). Factors affecting page navigation with optical magnifiers. Vision 2002: Seventh International Conference on Low Vision. Sweden:International Society for Low Vision Research and Rehabilitation. Abstract R3.8. Retrived from http://www.islrr.org/Vision02/247.html.
[21] Lovie-Kitchin, J.E., and Bevan, J.D. (1982). Paediatric low vision - a survey. Aust J Optom, 65, 169-77.
[22] Corn, A.L., Wall, R.S., Jose, R.T., Bell, J.K., Wilcox, K., and Perez, A. (2002). An initial study of reading and comprehension rates for students who received optical devices. Vis Impair Blind, 96, 1-9.
[23] Nilsson, S. E. G., and Nilsson, U. L. (1994). Educational training in the use of aids and residual vision is essential in rehabilitation of patients with severe age-related macular degeneration. I. Principle and Methods. In A. C. Kooijman, P. L. Looijestijn, J. A. Welling, and G. J. van der Wildt (Eds.). Low Vision: Research and New Developments in Rehabilitation (pp. 147-154). Amsterdam: IOS Press.
[24] Langmann, A., Lindner, S., and Kollegger, E. (1994). Low vision training for better usage of magnifying visual aids. Ophthalmologica, 208, 92-94.
[25] Goodrich, G.L., and Quillman, R.D. (1977). Training eccentric viewing. J Vis Impair Blind, 71(9), 377-81.
[26] Watson, G.R., Wright, V., and De l'Aune, W. (1992). The efficacy of comprehension training and reading practice for print readers with macular loss. J Vis Impair Blind, 86, 37-43.
[27] Bowers, A. (2000b). Stand magnifiers: page navigation and short-term practice effects. In C. Stuen, A. Arditi, A. Horowitz, M.A. Lang, B. Rosenthal, and K.R. Seidman (Eds.). Vision Rehabilitation - Assessment, Intervention and Outcomes (pp.319-323). Lisse: Swets and Zeitlinger.