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Physiology of the Eye CW3 Shawn Hayes

Physiology of the Eye CW3 Shawn Hayes. Physiology of the Eye. TC 1-204 FM 1-301. REFERENCES. Physiology of the Eye. SCHEDULE. ANATOMY OF EYE TYPES OF VISION VISUAL LIMITATIONS DARK ADAPTATION SELF IMPOSED STRESSES NIGHT VISION SCANNING TECHNIQUES DISTANCE ESTIMATION VISUAL ILLUSIONS

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Physiology of the Eye CW3 Shawn Hayes

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  1. Physiology of the EyeCW3 Shawn Hayes

  2. Physiology of the Eye • TC 1-204 • FM 1-301 REFERENCES

  3. Physiology of the Eye SCHEDULE • ANATOMY OF EYE • TYPES OF VISION • VISUAL LIMITATIONS • DARK ADAPTATION • SELF IMPOSED STRESSES • NIGHT VISION SCANNING TECHNIQUES • DISTANCE ESTIMATION • VISUAL ILLUSIONS • AIRCRAFT DESIGN LIMITATIONS

  4. Physiology of the Eye Anatomy of the Eye • CORNEA • IRIS • PUPIL • LENS • RETINA - RODS/CONES • FOVEA CENTRALIS • OPTIC DISC

  5. Physiology of the Eye Types of Vision • PHOTOPIC • DAYLIGHT • CONES • MESOPIC • DAWN, DUSK, FULL MOON LIGHT • CONES AND RODS • SCOTOPIC • NIGHT, LOW LIGHT LEVELS • RODS, LOSS OF COLOR • 20/200 ACUITY OR LESS • NIGHT BLIND SPOT

  6. Physiology of the Eye Visual (eye) limitations • COLOR AT NIGHT • CAN NOT BE DETERMINED WITH RODS ONLY • IF BRIGHT ENOUGH THE CONES DETECT COLOR • DETAILS LOST • FINE DETAIL IMPOSSIBLE WITH 20/200 • MUST IDENTIFY OBJECTS BY THE OUTLINE • RETINAL SENSITIVITY • CONES NOT EFFECTIVE • NIGHT BLIND SPOT 5°-10° • MUST USE OFF CENTER VIEWING

  7. Physiology of the Eye Visual (eye) limitations • PRESBYOPIA • HARDENING OF THE LENS • ABOUT 40 YEARS OLD • CANT FOCUS ON NEAR OBJECTS • NIGHT MYOPIA • CANT FOCUS ON FAR OBJECTS • NEAR SIGHTED • ASTIGMATISM • IRREGULARITY OF THE CORNEA • OUT OF FOCUS CONDITION

  8. Physiology of the Eye Dark Adaptation • 30-45 MINS • 2-3 MINS WITH NVGS

  9. Physiology of the Eye Self Imposed Stresses RUGS XHAUSTION LCOHOL OBACCO YPOGLYCEMIA D E A T H

  10. Physiology of the Eye Night Vision Scanning Techniques • SCANNING • OFF-CENTER VIEWING

  11. Physiology of the Eye Distance Estimation and Depth Perception GRAM • MONOCULAR CUES

  12. Physiology of the Eye Distance Estimation and Depth Perception INEAR PERSPECTIVE PPARENT FORESHORTENING ERTICAL POSITION IN THE FIELD GEOMETRIC PERSPECTIVE • L • A • V

  13. Physiology of the Eye Distance Estimation and Depth Perception NOWN SIZE OF OBJECT NCREASING DECREASING SIZE OF OBJECTS ERRESTRIAL ASSOCIATION VERLAPPING CONTOURS RETINAL IMAGE SIZE • K • I • T • O

  14. Physiology of the Eye Distance Estimation and Depth Perception ARIATIONS IN COLOR OR SHADES OSS OF DETAIL OR TEXTURE OSITION OF LIGHT SOURCE AND DIRECTION OF SHADOWS AERIAL PERSPECTIVE • V • L • P

  15. Physiology of the Eye Distance Estimation and Depth Perception OTION PARALLAX M

  16. Physiology of the Eye Visual Illusions C R A S H C S AR F F F

  17. Physiology of the Eye Visual Illusions ALSE HORIZONS LICKERVERTIGO ASCINATION (FIXATION) F F F

  18. Physiology of the Eye Visual Illusions ONFUSION OF GROUND LIGHTS ELATIVE MOTION UTOKINESIS TRUCTURAL ILLUSIONS EIGHT PERCEPTION ILLUSION C R A S H

  19. Physiology of the Eye Visual Illusions RATER ILLUSION IZE-DISTANCE ILLUSION LTERED REFERENCE PLANES EVERSIBLE PERSPECTIVE C S A R

  20. Physiology of the Eye Aircraft Design Limitations • INSTRUMENT PANEL • SEAT POSITION • WINDSCREENS • INTERIOR LIGHTS • EXTERIOR LIGHTS

  21. Physiology of the Eye CONCLUSION • ANATOMY OF EYE • TYPES OF VISION • VISUAL LIMITATIONS • DARK ADAPTATION • SELF IMPOSED STRESSES • NIGHT VISION SCANNING TECHNIQUES • DISTANCE ESTIMATION • VISUAL ILLUSIONS • AIRCRAFT DESIGN LIMITATIONS

  22. Physiology of the Eye QUESTIONS ?

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