Group 4 Sezgi Kedici Mustafa Kurtcu Ilter nder

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Group 4Sezgi KediciMustafa KurtcuIlter Önder
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VISUAL STRESS EYE STRAIN DUE TO COMPUTER
USAGE
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Methodology

• Purpose
• Minimum Equipment
• Participants
• Tasks
• Recording and analysis

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Purpose

• Evaluate the effects of time and background color
  on eye strain.
• ? Background color and time are two significant
  factors that affect eye strain (visual
  performance).

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How to measure Eyes Strain ?

• Phoria Tests
• Vertical Phoria
• Lateral Phoria
• Acuity Tests
• Depth Tests
• Color Slide

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Minimum Equipment

• VDT
• Ortho Rater
• Bausch Lomb Ortho-Rater
• 7 Far perception
• 5 Near perception tests

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Participants

• More than 10 participants
• (tentatively 12)
• 18-22 Age group
• No gender discrimination (?)
• Performing tasks in the Computer laboratory

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Tasks

• No demand for mental activity
• Do similar works
• Participants do the similar activities
• Possible tasks
• Simulation project
• Reporting of a Case study
• Playing a computer game
• Word Processing

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Parameters

• Background Color
• Black vs. White
• Time
• Various time intervals
• (15 min, 30 min, 1 hour, 2 hours)

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Recording and Analysis

• Utilization of the tests in the Ortho-Rater
• Record Cart
• Visual performance?Numeric Results

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Record Cart
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Recording and Analysis(Horizontal Phoria)
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Recording and Analysis

• Regressions in the numeric values
• Background color
• Time horizon
• Test the null hypothesis (statistically)

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Thanks !Suggestions?