VISUAL STRESS: EYE STRAIN DUE TO COMPUTER USAGE

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VISUAL STRESS EYE STRAIN DUE TO COMPUTER
USAGE
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Team Members

• Sezgi Kedici
• Mustafa Kurtcu
• Ilter Önder

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METHODOLOGY
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Outline

• Pilot Study
• Experimental Design
• Subjects
• Apparatus
• Experimental Procedure
• Data Analysis

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Pilot Study

• Four subjects
• Effectiveness Reliability
• Apparatus
• Detect the magnitude of the changes

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Experimental Design

• Two experimental conditions
• Short term
• Two hours
• Effect on PHORIA
• All subjects under all conditions
• Objective and subjective tests
• Test and retest data to be analyzed

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Subjects

• 20 Subjects
• 10 male, 10 female
• All healthy people
• 21 years of age ( range 19-23)
• 3th and 4th year Industrial Engineering students

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Apparatus

• Ergonomics and Computer Laboratories
• Pentium III
• Clock speed 550 MHz
• 128 Mb RAM
• 15 Compact monitors
• Ortho Rater (Bausch Lomb)
• Near Far Measurements of Vertical Horizontal
  Phoria

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Experimental Procedure

• Inform and fill a form
• Pre-experiment questionnaire
• Initial measurements
• One of two time intervals
• Conditions
• 15 monitors at 36 cm distance
• Comfortable working conditions

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Experimental Procedure (After)

• Visual measurements
• Post-experiment questionnaire

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Thanks !Suggestion Questions??