The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
From inside the book
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Page ix
... tion - Limit Angle - Total Reflection - Refraction by a Spherical Surface— Principal and Conjugate Foci - Image formed by a single Refracting Sur- face - Focal Planes - Cardinal Points - Several Refracting Surfaces - Focal Planes and ...
... tion - Limit Angle - Total Reflection - Refraction by a Spherical Surface— Principal and Conjugate Foci - Image formed by a single Refracting Sur- face - Focal Planes - Cardinal Points - Several Refracting Surfaces - Focal Planes and ...
Page x
... tion of Refraction - Subjective Dioptometry - Dioptometry , Method based upon Visual Acuteness - Landolt's Method - Optometers based upon a Single Convex Lens - Optometers based upon Galileo's Telescope - Optometers based upon the ...
... tion of Refraction - Subjective Dioptometry - Dioptometry , Method based upon Visual Acuteness - Landolt's Method - Optometers based upon a Single Convex Lens - Optometers based upon Galileo's Telescope - Optometers based upon the ...
Page 5
... tion , let us take , instead of a single ray , a pencil of luminous rays a a ' bb ' ( Fig . 2 ) . They have come sufficiently far from the luminous source , that the surface of the wave , of which cb ' represents a section , may be ...
... tion , let us take , instead of a single ray , a pencil of luminous rays a a ' bb ' ( Fig . 2 ) . They have come sufficiently far from the luminous source , that the surface of the wave , of which cb ' represents a section , may be ...
Page 19
... tion , of the second medium , n , and we shall have- For parallel rays , g ' ( Fig . 8 ) likewise becomes infinite . · 4 b . Designating by G " the distance C p " ( Fig . 9 ) from the centre of curvature to the second principal focus ...
... tion , of the second medium , n , and we shall have- For parallel rays , g ' ( Fig . 8 ) likewise becomes infinite . · 4 b . Designating by G " the distance C p " ( Fig . 9 ) from the centre of curvature to the second principal focus ...
Page 45
... tion , appears to arise . H FIG . 24 . Suppose A to be a luminous point . One of the rays , emanating from it , is directed toward the first nodal point , H ' . It would pass out of the system , remaining parallel to this direction ...
... tion , appears to arise . H FIG . 24 . Suppose A to be a luminous point . One of the rays , emanating from it , is directed toward the first nodal point , H ' . It would pass out of the system , remaining parallel to this direction ...
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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