foveal vision การใช้

• Elderly subjects depend more on foveal vision than younger subjects during walking.
• The foveal vision adds detailed information to the peripheral " first impression ".
• Thus, foveal vision may also be defined as the central 1.5 2?of the field of vision.
• The diagram shows the relative acuity of the human eye on the horizontal meridian in degrees visual angle from foveal vision.
• I suspect that if it were carefully analyzed it would be found to be a specific instance of one of the well known perceptual effects from things changing outside foveal vision.
• Since cone cells require considerably brighter light sources to be activated, the result of this distribution is further that peripheral vision is much more sensitive at night relative to foveal vision.
• Although he did not use these words literally he actually is the father of the modern distinction between foveal vision ( a more precise term for central vision ) and peripheral vision.
• In terms of visual acuity, " foveal vision " may be defined as the part of the retina in which visual acuity is at least 20 / 20 ( 6 / 3 metric ).
• Although he did not use these words literally he actually is the father of the modern distinction between " foveal vision " ( a more precise term for central vision ) and peripheral vision.
• They observed that the usual " intensity multiplied by aperture " rule did not apply in foveal vision and that rays entering the eye via peripheral regions of the pupil were less efficient by roughly a factor of five.
• I have noticed, in the context of driving at night and thus moving quickly relative to passing car headlights, static motorway street and tunnel lights, etc, that as lights move backwards out of the areas of foveal vision and into the areas of peripheral vision they become noticably redder.