Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
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Página xii
... CENTRAL SPOT , 76 ; function of central spot , 77 ; minimum visibile , 80 ; minimum tactile , 81 ; ( 3 ) blind spot , 81 ; pecul- iar to vertebrates , 82 ; experiments illustrating , 82 ; why no visible representative in field of view , 85 ...
... CENTRAL SPOT , 76 ; function of central spot , 77 ; minimum visibile , 80 ; minimum tactile , 81 ; ( 3 ) blind spot , 81 ; pecul- iar to vertebrates , 82 ; experiments illustrating , 82 ; why no visible representative in field of view , 85 ...
Página xvi
... CENTRAL SPOT , OR FOVEA : Central in man and apes , 300 ; absent in most mammals and in reptiles and fishes , 300 ; relation of corresponding points to optic axes in man and mammals , 300 ; in some birds = two foveæ , one monocular ...
... CENTRAL SPOT , OR FOVEA : Central in man and apes , 300 ; absent in most mammals and in reptiles and fishes , 300 ; relation of corresponding points to optic axes in man and mammals , 300 ; in some birds = two foveæ , one monocular ...
Página 52
... central spot . through the thickness shows that it is very complex in its structure , being composed of several very distinct layers . We may first represent it on a smaller scale of enlargement as composed of three principal layers ...
... central spot . through the thickness shows that it is very complex in its structure , being composed of several very distinct layers . We may first represent it on a smaller scale of enlargement as composed of three principal layers ...
Página 54
... spots . These are the spots where the optic nerve , o , enters , and the central spot , c , which is in the axis of the eye . Where the optic nerve enters , of course , no other layer can exist except the fibrous layer . In the central spot ...
... spots . These are the spots where the optic nerve , o , enters , and the central spot , c , which is in the axis of the eye . Where the optic nerve enters , of course , no other layer can exist except the fibrous layer . In the central spot ...
Página 55
... central spot the cones become more numerous , as seen in B. In the depression of the central spot ( fovea centralis ) we find only cones , and these are of much smaller size than those in other parts of the retina , as FIG . 25 . B ...
... central spot the cones become more numerous , as seen in B. In the depression of the central spot ( fovea centralis ) we find only cones , and these are of much smaller size than those in other parts of the retina , as FIG . 25 . B ...
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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