The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
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Page 101
... images it will be seen , according to formula 9 a— i = og " g ' that , for the same value of o and g ' , i.e. , for ... retinal image is necessarily smaller in the first case than in the second . The proportion between them is as 15 is to ...
... images it will be seen , according to formula 9 a— i = og " g ' that , for the same value of o and g ' , i.e. , for ... retinal image is necessarily smaller in the first case than in the second . The proportion between them is as 15 is to ...
Page 103
... retinal images received by these two eyes . This difference is the same as that which exists between a myopic eye ... retinal image must be larger in the latter case than in the former . An example of curvature - hyperopia is furnished ...
... retinal images received by these two eyes . This difference is the same as that which exists between a myopic eye ... retinal image must be larger in the latter case than in the former . An example of curvature - hyperopia is furnished ...
Page 105
... retinal images , values which more nearly correspond to the actual values . The distance g " , from the image to the second nodal point , being much less than that ( g ' ) from the object to the first nodal point , differences in the ...
... retinal images , values which more nearly correspond to the actual values . The distance g " , from the image to the second nodal point , being much less than that ( g ' ) from the object to the first nodal point , differences in the ...
Page 106
... images received by the retina under such circumstances . In order to find the optical constants of the compound ... retinal images formed by a magnifying glass . We shall then use the cardinal points of this glass , whose thickness is ...
... images received by the retina under such circumstances . In order to find the optical constants of the compound ... retinal images formed by a magnifying glass . We shall then use the cardinal points of this glass , whose thickness is ...
Page 112
... retinal images than if the cornea were exactly spherical ( vide Chapter I. , pp . 12 and 13 ) . The radius of curvature of the central part of the cornea varies considerably in different persons , and often in the two eyes of the same ...
... retinal images than if the cornea were exactly spherical ( vide Chapter I. , pp . 12 and 13 ) . The radius of curvature of the central part of the cornea varies considerably in different persons , and often in the two eyes of the same ...
Other editions - View all
The Refraction and Accommodation of the Eye and Their Anomalies Edmond Landolt No preview available - 2023 |
The Refraction and Accommodation of the Eye and Their Anomalies Edmond Landolt No preview available - 2018 |
Common terms and phrases
acuteness of vision adapted ametropia amplitude of accommodation angle anisometropia asthenopia astigmatism atropine axis becomes binocular vision centimetres centre choroid ciliary muscle concave glass convex glass convex lens cornea correcting-glass correction corresponding crystalline lens determine diminished dioptric apparatus dioptric system dioptries diplopia direction distant vision divergent Donders dynamic refraction effort of accommodation emmetropia emmetropic eye equal focal distance formula fundus Hence horizontal hyperopia hyperopic hyperopic eye increase index of refraction infinity inverted Landolt latter lenses less lines of fixation luminous point luminous rays maximum medium metre metre-angles millimetres mydriatic myopes myopia myopic eye nearer nodal point object observed obtain Ophth ophthalmoscope optical optometer patient placed posterior principal focus principal meridians principal point prism produced punctum proximum punctum remotum pupil range of accommodation refractive power refractive surface retina retinal images second principal situated spasm spherical static refraction strabismus tion vertical visual acuteness
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