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Prospective quantification of near work using the experience sampling method.

M J Rah1, G L Mitchell, M A Bullimore

  • 1New England College of Optometry, Boston, Massachusetts 02215, USA. rahm@ncopost.ne-optometry.edu

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|August 16, 2001
PubMed
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The Experience Sampling Method effectively quantifies daily visual tasks, with near work comprising over half of reported activities. This method provides real-time data on visual behaviors.

Area of Science:

  • Ophthalmology
  • Ergonomics
  • Human Factors

Background:

  • Assessing near work using traditional surveys presents significant challenges.
  • The Experience Sampling Method (ESM) offers a potential solution for quantifying daily visual tasks.

Purpose of the Study:

  • To evaluate the feasibility of a modified Experience Sampling Method for real-time assessment of visual activities.
  • To quantify the nature, duration, and working distance of daily visual tasks.

Main Methods:

  • Twenty-one subjects participated in a 6-day study, receiving five random pages daily.
  • Participants responded via telephone survey, reporting on their current visual activity, duration, and working distance.
  • Responses were categorized into 11 activity types for analysis.

Related Experiment Videos

Main Results:

  • An overall response rate of 81.3% was achieved.
  • Common activities included distance tasks (driving, walking), computer use, reading, household tasks, and television viewing.
  • Near-work activities (mean distance ≤ 26 inches) constituted 54.3% of all reported visual tasks.

Conclusions:

  • A modified Experience Sampling Method is a feasible approach for real-time sampling of visual activities.
  • This method provides valuable data for understanding near work and other visual behaviors.