Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 18
... side , just in front of the middle or equator of the globe ( Fig . 3 ) . They are called severally superior , inferior , external , and internal rectus . The first turns the ball upward , the second downward , the third to the right ...
... side , just in front of the middle or equator of the globe ( Fig . 3 ) . They are called severally superior , inferior , external , and internal rectus . The first turns the ball upward , the second downward , the third to the right ...
Página 19
... side ( Fig . 3 , c ) ; it then turns upon itself backward and outward , passes over the globe obliquely across the equator , and is attached to the sclerotic , or white coat of the eye , on the outside , a little behind the equator ...
... side ( Fig . 3 , c ) ; it then turns upon itself backward and outward , passes over the globe obliquely across the equator , and is attached to the sclerotic , or white coat of the eye , on the outside , a little behind the equator ...
Página 24
... side of the direct line of sight , the cornea will fill again and the sight may be recovered . ( c . ) The posterior and much larger chamber is filled with a transparent , glassy substance , about the consist- ence of soft jelly ...
... side of the direct line of sight , the cornea will fill again and the sight may be recovered . ( c . ) The posterior and much larger chamber is filled with a transparent , glassy substance , about the consist- ence of soft jelly ...
Página 31
... sides will be quenched , and not allowed to rebound by reflection , and thus fall on the image and spoil it . No light must fall on the image except that which comes directly from the object . So the eye also is a very small , dark ...
... sides will be quenched , and not allowed to rebound by reflection , and thus fall on the image and spoil it . No light must fall on the image except that which comes directly from the object . So the eye also is a very small , dark ...
Página 39
... side , and thus enlarge it ( Fig . 15 , B ) . The circular fibers are concentric with the pupil , and are especially numerous and strong near the margin , forming there a band about one - twentieth of an inch wide . When they contract ...
... side , and thus enlarge it ( Fig . 15 , B ) . The circular fibers are concentric with the pupil , and are especially numerous and strong near the margin , forming there a band about one - twentieth of an inch wide . When they contract ...
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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 cornea corresponding points cross depth of space distance distant objects distinct divergence double images evident exactly Experiment external images farther fibers field of view gaze Helmholtz heteronymous homonymous horizontal horopter horopteric line identical points Illustrations impression inches inclination interocular space inverted jects law of corresponding left eye left-eye image lens light line of sight look median line middle monocular motion muscles naked eyes nearer nose oblique observer ocular optic axes optic centers optic chiasm optic convergence optic nerve outward parallel perceived perception perfect image perfectly point of sight position projection pupil ray-lines rays refractive represent retina retinal images right and left right eye right-eye image rotation sclerotic screen seen single shut side stereoscope surface tion torsion turn the eyes vergence vertical meridian vibrations visual lines visual result