Sight: An Exposition of the Principles of Monocular and Binocular VisionD. Appleton, 1897 - 318 páginas |
Dentro del libro
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Página xi
... ; theory of adjustment , 38 ; Helmholtz's view , 39 . SECTION II . - DEFECTS OF THE EYE AS AN INSTRUMENT , 40 ; THE IMPERFECT EYE , 40 ; emmetropy , or normal sight , 41 ; de- PAGE 1 9 24 fects- ( 1 ) myopy , or near sight , xi.
... ; theory of adjustment , 38 ; Helmholtz's view , 39 . SECTION II . - DEFECTS OF THE EYE AS AN INSTRUMENT , 40 ; THE IMPERFECT EYE , 40 ; emmetropy , or normal sight , 41 ; de- PAGE 1 9 24 fects- ( 1 ) myopy , or near sight , xi.
Página 22
... normal eye . which enter the pupil , are refracted by the lenses of the eye , and if the eye be normal , brought to a focus on the retinal screen at a b . Now , since the rays from every intermediate point of the object will be ...
... normal eye . which enter the pupil , are refracted by the lenses of the eye , and if the eye be normal , brought to a focus on the retinal screen at a b . Now , since the rays from every intermediate point of the object will be ...
Página 24
... NORMAL EYE . THE further explanation of the wonderful mechan- ism of the eye is best brought out by a comparison with some optical instrument . We select for this purpose the photographic camera . The eye and the camera : the one a ...
... NORMAL EYE . THE further explanation of the wonderful mechan- ism of the eye is best brought out by a comparison with some optical instrument . We select for this purpose the photographic camera . The eye and the camera : the one a ...
Página 37
... normal young eyes . The experimenter stands in a dark room , in front of the patient , A , with a lighted candle in his hand , a little to one side , as in Fig . 18 , C , while his own point FIG . 18 . B n A , eye observed ; B. eye of ...
... normal young eyes . The experimenter stands in a dark room , in front of the patient , A , with a lighted candle in his hand , a little to one side , as in Fig . 18 , C , while his own point FIG . 18 . B n A , eye observed ; B. eye of ...
Página 39
... normal passive con- dition , as when gazing at a distance . Now there are certain muscular fibers ( ciliary muscle , Fig . 20 , d ) which , arising from the exterior fixed border of the iris just where it is attached to the sclerotic ...
... normal passive con- dition , as when gazing at a distance . Now there are certain muscular fibers ( ciliary muscle , Fig . 20 , d ) which , arising from the exterior fixed border of the iris just where it is attached to the sclerotic ...
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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