Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 9
... turn may determine changes in consciousness , which we call sensation . The simplest and most general form of sensation is what is called general sensibility , or common sensation . This is a mere sense of contact , an indefinite ...
... turn may determine changes in consciousness , which we call sensation . The simplest and most general form of sensation is what is called general sensibility , or common sensation . This is a mere sense of contact , an indefinite ...
Página 17
... turns over the edge ( Fig . 2 , 17 ) and passes under the lids , becoming here thin and tender mucous membrane ; it is then reflected from the back part of the lid to the anterior surface of the white portion of the ball ( Fig . 2 , a a ) ...
... turns over the edge ( Fig . 2 , 17 ) and passes under the lids , becoming here thin and tender mucous membrane ; it is then reflected from the back part of the lid to the anterior surface of the white portion of the ball ( Fig . 2 , a a ) ...
Página 18
... turns in all directions . This is by means of six slender muscles . Four of these are FIG . 2 . FIG . 3 . C MUSCLES OF THE EYEBALL . - a , optic nerve ; b , supe- rior oblique muscle ; c , pulley ; d , inferior oblique . The other four ...
... turns in all directions . This is by means of six slender muscles . Four of these are FIG . 2 . FIG . 3 . C MUSCLES OF THE EYEBALL . - a , optic nerve ; b , supe- rior oblique muscle ; c , pulley ; d , inferior oblique . The other four ...
Página 19
... turn the eye upward , but also to rotate . it a little on its axis inward toward the nose ; while the inferior rectus not only turns the eye downward , but also rotates it a little on its axis outward . The oblique muscles are superior ...
... turn the eye upward , but also to rotate . it a little on its axis inward toward the nose ; while the inferior rectus not only turns the eye downward , but also rotates it a little on its axis outward . The oblique muscles are superior ...
Página 20
... turn the eyes outward , nor the superior rectus of one eye and the inferior rectus of the other , so as to turn the one eye upward and the other downward . The reason of this is because such motions , so far from subserving any useful ...
... turn the eyes outward , nor the superior rectus of one eye and the inferior rectus of the other , so as to turn the one eye upward and the other downward . The reason of this is because such motions , so far from subserving any useful ...
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Términos y frases comunes
angle axis bacillary layer binocular eye binocular perspective binocular vision camera central spot ciliary muscle circle colors combined images cones corresponding points cross depth of space distant objects distinct double images evident exactly Experiment external images eyes by squinting farther fibers field of view figures finger focal adjustment foreground forms of perspective gaze heteronymously homonymously horizontal horopter identical points impression inches inclination interocular space inverted jects left eye lens less convergence light line of sight look median plane monocular images motion muscles naked eyes nearer nose object or scene oblique observer ocular optic axes optic chiasm optic convergence optic nerve outward parallel perceived perception of depth perfect image perfectly point of sight position projection rays refractive represent retina retinal images right and left right eye rotation sclerotic screen seen single side stereoscope stereoscopic pictures surface tion torsion turn the eyes unite visual lines visual result