Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página 41
... greater as the object is nearer , until it is limited at the distance of about five inches . The normal eye , therefore , is like a camera , which , when pushed up as much as possible , is arranged for making a perfect image of sun , or ...
... greater as the object is nearer , until it is limited at the distance of about five inches . The normal eye , therefore , is like a camera , which , when pushed up as much as possible , is arranged for making a perfect image of sun , or ...
Página 47
... greater dis- tance apart , according to the degree of astigmatism . A slight astigmatism is very common , and often exists un- known to the subject . Test for Astigmatism .-- This defect may be detected by looking at a cross of ...
... greater dis- tance apart , according to the degree of astigmatism . A slight astigmatism is very common , and often exists un- known to the subject . Test for Astigmatism .-- This defect may be detected by looking at a cross of ...
Página 54
... greater enlargement is necessary . Fig . 24 rep- resents such enlargement . The fibrous layer , h , requires no further description ; but the granular and nuclear layer is seen to be composed of two distinct layers of small granules , d ...
... greater enlargement is necessary . Fig . 24 rep- resents such enlargement . The fibrous layer , h , requires no further description ; but the granular and nuclear layer is seen to be composed of two distinct layers of small granules , d ...
Página 83
... inches apart , then the disappearance on approach from a greater distance takes place at about 1 foot , and the reappearance at about 10 inches . If the objects be 1 foot apart , then the disappearance SPACE PERCEPTION . 83.
... inches apart , then the disappearance on approach from a greater distance takes place at about 1 foot , and the reappearance at about 10 inches . If the objects be 1 foot apart , then the disappearance SPACE PERCEPTION . 83.
Página 109
... greater activity of the left cerebral hemisphere . Peo- ple are right - handed because they are left - brained . I pause a moment in order to draw attention here to the uncertainty of some so - called facts of conscious- ness . I have ...
... greater activity of the left cerebral hemisphere . Peo- ple are right - handed because they are left - brained . I pause a moment in order to draw attention here to the uncertainty of some so - called facts of conscious- ness . I have ...
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Términos y frases comunes
adjustment angle axis bacillary layer becomes binocular eye binocular perspective binocular vision blind spot camera central spot ciliary muscle circle colors combined image concave corresponding points cross defect depth of space distance distant objects distinct divergence double images evident exactly Experiment explained external images farther fibers field of view focal fore fovea Helmholtz heteronymous homonymous horizontal horopter horopteric line Illustrations impression inches inclined interocular space left eye left-eye image lens light line of sight look median plane middle monocular motion muscles nearer normal eye nose oblique observer ocular optic axes optic chiasm optic nerve optic vesicle outward parallel perceived perception perfectly phantom phenomena point of sight position primary projection pupil ray-line rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single sensation side stereoscope surface tion torsion turn the eyes vergence vibrations visual lines visual result