Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1881 - 275 páginas |
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Página 8
... extreme , incompatible with binocular vision , 264 ; central spot , 266 ; how far it exists in lower animals , 267 ; importance of this spot , 267 ; general changes in the eye as we go up the vertebrate scale , 269 . 252 262 SIGHT ...
... extreme , incompatible with binocular vision , 264 ; central spot , 266 ; how far it exists in lower animals , 267 ; importance of this spot , 267 ; general changes in the eye as we go up the vertebrate scale , 269 . 252 262 SIGHT ...
Página 35
... extreme colors , red and violet . * But the degree of chromatism is so small as not to interfere at all with the accuracy of vision . 4. Aberration . - Another defect , much more diffi- cult to correct , is aberration . The form of lens ...
... extreme colors , red and violet . * But the degree of chromatism is so small as not to interfere at all with the accuracy of vision . 4. Aberration . - Another defect , much more diffi- cult to correct , is aberration . The form of lens ...
Página 51
... extreme old age , when the tissues begin to break down , it is probable that some flattening of the eye may take place . To such persons it would be necessary to wear convex glasses , even for distant objects . But this is not ordinary ...
... extreme old age , when the tissues begin to break down , it is probable that some flattening of the eye may take place . To such persons it would be necessary to wear convex glasses , even for distant objects . But this is not ordinary ...
Página 57
... extreme importance of the retina requires that these layers be examined more closely . For this a much greater enlargement is necessary . Fig . 22 rep- resents such enlargement . The fibrous layer , h , requires no further description ...
... extreme importance of the retina requires that these layers be examined more closely . For this a much greater enlargement is necessary . Fig . 22 rep- resents such enlargement . The fibrous layer , h , requires no further description ...
Página 62
... more than one octave . Now in many ears the extreme limits are not perceived ; but this is not considered a defect , because there is no special use for the extremest range . So in the eye . Even 62 MONOCULAR VISION .
... more than one octave . Now in many ears the extreme limits are not perceived ; but this is not considered a defect , because there is no special use for the extremest range . So in the eye . Even 62 MONOCULAR VISION .
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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