Psychophysics of reading--X. Effects of age-related changes in vision.

This study examined the influence of age-related changes in vision on reading performance. Maximum reading speed was measured in groups of young (n = 16, mean age 21.6 years) and old (n = 14, mean age 68.3 years) subjects, all with acuities of 20/32 or better. A psychophysical procedure was used for measuring reading speed that has proven reliable and sensitive to visual factors in previous research. Data were collected for character sizes ranging from .15 degrees to 12 degrees. Research revealed that old subjects who were free of eye disease read as fast as the young subjects for character sizes ranging from .3 degrees to 1.0 degrees. This is the range in which reading speed is maximum for young subjects. Research also revealed that old subjects showed a deficit when reading text composed of very small or very large characters. Their speeds dropped to about 70% of the young adult speeds. These deficits may be due to age-related losses in visual contrast sensitivity.

[1]  H. Leibowitz,et al.  Relationships among Measures of Static and Dynamic Visual Sensitivity , 1988, Human factors.

[2]  J. Sharpe,et al.  Effect of aging on horizontal smooth pursuit. , 1978, Investigative ophthalmology & visual science.

[3]  Older observers have attenuated increment thresholds upon transient backgrounds. , 1986, Journal of gerontology.

[4]  C. Tyler,et al.  The relation between visual sensitivity and intraocular pressure in normal eyes. , 1984, Investigative ophthalmology & visual science.

[5]  Gordon E. Legge,et al.  Psychophysics of reading—V. The role of contrast in normal vision , 1987, Vision Research.

[6]  M E Sloane,et al.  Aging and luminance-adaptation effects on spatial contrast sensitivity. , 1988, Journal of the Optical Society of America. A, Optics and image science.

[7]  G E Legge,et al.  Psychophysics of reading. XI. Comparing color contrast and luminance contrast. , 1990, Journal of the Optical Society of America. A, Optics and image science.

[8]  G E Legge,et al.  Psychophysics of reading. IV. Wavelength effects in normal and low vision. , 1986, Journal of the Optical Society of America. A, Optics and image science.

[9]  F Schieber,et al.  Visual aging: A transient/sustained shift? , 1981, Perception & psychophysics.

[10]  Richard Peterson,et al.  The Latest Data on Visual Disability from NCHS , 1979 .

[11]  R. Sekuler,et al.  Contrast sensitivity throughout adulthood , 1982, Vision Research.

[12]  J E Sheedy,et al.  Binocular vs. Monocular Task Performance , 1986, American journal of optometry and physiological optics.

[13]  G. Legge,et al.  Psychophysics of reading. VI—The role of contrast in low vision , 1989, Vision Research.

[14]  G. Legge,et al.  Psychophysics of reading—I. Normal vision , 1985, Vision Research.

[15]  J. Silver,et al.  Reading Aids for the Partially Sighted: A Systematic Classification and Procedure for Prescribing , 1978 .

[16]  G. Lennerstrand,et al.  AGE VARIATIONS IN NORMAL HUMAN CONTRAST SENSITIVITY , 1979, Acta ophthalmologica.

[17]  Gordon E. Legge,et al.  Psychophysics of reading—II. Low vision , 1985, Vision Research.

[18]  GORDON E. LEGGE,et al.  Psychophysics of Reading. VIII. The Minnesota Low- Vision Reading Test , 1989, Optometry and vision science : official publication of the American Academy of Optometry.

[19]  J. F. Sturr,et al.  Temporal summation functions for detection of sine-wave gratings in young and older adults , 1988, Vision Research.

[20]  R W Baloh,et al.  Effect of aging on eye tracking. , 1980, Archives of neurology.

[21]  Gordon E. Legge,et al.  PSYCHOPHYSICS OF READING: VII. COMPREHENSION IN NORMAL AND LOW VISION , 1989 .

[22]  D. C. Howell.  Statistical Methods for Psychology , 1987 .

[23]  R. Sekuler,et al.  Human aging and spatial vision. , 1980, Science.

[24]  C. C. Krischer,et al.  Characterization of gliding text as a reading stimulus , 1985 .