ergo11 - Safety and Ergonomics Review! Eye? Vision? Visual...

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Safety and Ergonomics Review!!!! ± Eye??? ± Vision??? ± Visual field??? ± Accommodation??? ± Accommodation and age??? dk f ( dk )( t i t Spring 2010/ 2011 ± dark focus (dark vergence), (resting tonus posture)??? 1 Safety and Ergonomics Human Senses
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Safety and Ergonomics Vision stimuli ± Cones needs higher i t iti t f ti intensities to function ± Rods are more sensitive; respond to lower incentives Spring 2010/ 2011 3 Visual Adaptation ± Adaptation ² Change in sensitivity to the intensity or quality of stimulation over time ± Adaptation to darkness ± Adaptation to light Spring 2010/ 2011 4
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Safety and Ergonomics Visual Adaptation Spring 2010/ 2011 5 Visual Adaptation ± Adaptation respond depends on: Luminanc ² Luminance ² Duration of previous condition ² Wavelength of illumination and location of light stimuli on the retina ± Achieved by: ² Adjustment of pupil Spring 2010/ 2011 ² Photochemical functions and Stimulation of rods and cones ² Spatial summation of stimuli 6
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This note was uploaded on 05/24/2011 for the course INDUSTRIAL IE 221 taught by Professor Maisa during the Spring '11 term at German University in Cairo.

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ergo11 - Safety and Ergonomics Review! Eye? Vision? Visual...

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