Is all Asthenopia the Same?
- J. Sheedy, John R. Hayes, A. Engle
- PsychologyOptometry and Vision Science
- 1 November 2003
Results support two different symptom constellations and, hence, at least two different afferent pathways for symptoms of asthenopia.
Text Legibility and the Letter Superiority Effect
- J. Sheedy, M. V. Subbaram, Aaron B. Zimmerman, John R. Hayes
- MedicineHum. Factors
- 1 December 2005
This letter superiority effect suggests that individual letters play a large role and word shape plays a smaller role, if any, in word identification at threshold, and potential applications of this research include optimization of font design for legibility and readability.
Computer Use, Symptoms, and Quality of Life
- John R. Hayes, J. Sheedy, J. Stelmack, C. Heaney
- MedicineOptometry and Vision Science
- 1 August 2007
Environmental variability at work was associated with eye symptoms and eye symptoms demonstrated a significant impact on quality of life and physical symptoms.
Vision problems at video display terminals: a survey of optometrists.
- J. Sheedy
- MedicineJournal of the American Optometric Association
- 1 October 1992
The best way to resolve symptoms for VDT workers is to provide thorough vision examination and treatment in conjunction with diagnosis and treatment of visual environmental problems.
Field Guide to Visual and Ophthalmic Optics
- J. Sheedy
- Medicine
- 1 September 2005
Visual effects of the luminance surrounding a computer display
- J. Sheedy, Rob Smith, John R. Hayes
- PsychologyErgonomics
- 15 July 2005
The effects of the surround luminance within the tested range are not large; however, the data show that the lowest surround Luminance levels should be avoided and that surround luminances levels at or slightly below that of the central task are preferred.
The Effects of Visual Display Distance on Eye Accommodation, Head Posture, and Vision and Neck Symptoms
- D. Rempel, K. Willms, J. Anshel, W. Jaschinski, J. Sheedy
- MedicineHum. Factors
- 1 October 2007
If the computer screen character sizes are close to the limits of visual acuity, it is recommended that the computer monitor be positioned between the near (52 cm) and middle (73 cm) distance from the eyes.
Visual Acuity and Chart Luminance
- J. Sheedy, I. Bailey, T. Raasch
- PhysicsAmerican Journal of Optometry and Physiological…
- 1 September 1984
Chart luminance is one parameter which needs to be standardized, and the effect of the luminance level upon acuity measurement is a critical factor in this determination.
Progressive addition lenses--matching the specific lens to patient needs.
- J. Sheedy
- Medicine, PhysicsOptometry
- 1 February 2004
Myofascial trigger point development from visual and postural stressors during computer work.
- D. Treaster, W. Marras, D. Burr, J. Sheedy, D. Hart
- PsychologyJournal of Electromyography & Kinesiology
- 1 April 2006
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