The Muscles of the Eye a Treatise On the Optical Functions of the Muscles in N
The Muscles of the Eye a Treatise On the Optical Functions of the Muscles in N
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In our eReader you can find the full English version of the book. Read The Muscles of the Eye a Treatise On the Optical Functions of the Muscles in N Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Muscles of the Eye a Treatise On the Optical Functions of the Muscles in N
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As the eyes are separated by the space between their rotary centers, to fix a near object they must be rela- tively in a slightly different position, turned inward, in which the right eye is turned to the left and the left eye is turned to the right. In changing this relative position for the fixation of a more distant point, the right eye must be turned to the right and the left eye to the left. These are duction movements of the eyes. They are the only normal ductions.
But on account of the o...bliquity of the direction of the object, one eye may be required to rotate less than the other, or even one may be required to remain stationary or fixed while the other eye exe- cutes the entire rotation. This is a combined version and duction, and the two functions, when exercised together, must not be con- fused with one another. Version takes care of the obHquity of the direction of the object fixed, duction with its nearness to the eyes. In the instance referred to above, when one eye remains stationary, both duction and version are participated in by both eyes, but for the single stationary eye the two neutralize each other.
What to read after The Muscles of the Eye a Treatise On the Optical Functions of the Muscles in N?
You can find similar books in the "Read Also" column, or choose other free books by George Adelmer Rogers to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
As the eyes are separated by the space between their rotary centers, to fix a near object they must be rela- tively in a slightly different position, turned inward, in which the right eye is turned to the left and the left eye is turned to the right. In changing this relative position for the fixation of a more distant point, the right eye must be turned to the right and the left eye to the left. These are duction movements of the eyes. They are the only normal ductions.
But on account of the o...bliquity of the direction of the object, one eye may be required to rotate less than the other, or even one may be required to remain stationary or fixed while the other eye exe- cutes the entire rotation. This is a combined version and duction, and the two functions, when exercised together, must not be con- fused with one another. Version takes care of the obHquity of the direction of the object fixed, duction with its nearness to the eyes. In the instance referred to above, when one eye remains stationary, both duction and version are participated in by both eyes, but for the single stationary eye the two neutralize each other.
What to read after The Muscles of the Eye a Treatise On the Optical Functions of the Muscles in N?
You can find similar books in the "Read Also" column, or choose other free books by George Adelmer Rogers to read onlineMoreLess
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