The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
From inside the book
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Page 5
... the portion of the wave corresponding to the point b enters the medium M " , and is there propagated with lessened speed only to the point d , the portion c of the same wave still remains in. ANGLES OF INCIDENCE AND REFRACTION . 3.
... the portion of the wave corresponding to the point b enters the medium M " , and is there propagated with lessened speed only to the point d , the portion c of the same wave still remains in. ANGLES OF INCIDENCE AND REFRACTION . 3.
Page 14
... corresponds to it . Take , for instance , the ray LA . It simply passes along the surface , tangent to and without ... corresponding angle of refraction will be CBB ' . Hence the ray will continue its course in the direction B ...
... corresponds to it . Take , for instance , the ray LA . It simply passes along the surface , tangent to and without ... corresponding angle of refraction will be CBB ' . Hence the ray will continue its course in the direction B ...
Page 25
... corresponding to points not situated upon the principal axis are then called secondary axes . These secondary axes have the same significance , for points not situated upon the principal axis , that the latter has for the points which ...
... corresponding to points not situated upon the principal axis are then called secondary axes . These secondary axes have the same significance , for points not situated upon the principal axis , that the latter has for the points which ...
Page 26
... corresponding to them . All the points united form , on the one hand , the linear object A ' B ' , and , on the other , its linear image B " A " . All lines situated in a plane perpendicular to the axis L'L " , and , passing through L ...
... corresponding to them . All the points united form , on the one hand , the linear object A ' B ' , and , on the other , its linear image B " A " . All lines situated in a plane perpendicular to the axis L'L " , and , passing through L ...
Page 27
... corresponding to the extremities of the object , through the centre of curvature . The points at which a perpendicular to the axis , passing through the point L ' , intersects these two lines , will indicate . the extremities of the ...
... corresponding to the extremities of the object , through the centre of curvature . The points at which a perpendicular to the axis , passing through the point L ' , intersects these two lines , will indicate . the extremities of the ...
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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