The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
From inside the book
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Page x
... means of the Upright Image - Optometry by means of the Inverted Image - Schmidt- Rimpler's Method of Optometry - Koroscopy Determination of the Dynamic Refraction of the Amplitude of Accommodation - Determination of the Amplitude of ...
... means of the Upright Image - Optometry by means of the Inverted Image - Schmidt- Rimpler's Method of Optometry - Koroscopy Determination of the Dynamic Refraction of the Amplitude of Accommodation - Determination of the Amplitude of ...
Page 31
... means of these data we may , without calculation , find the place where the image of an object is formed , as well as the size of this image . Let L'A ' ( Fig . 17 ) represent the object , o ' the first focus , " the second focus , H'HH ...
... means of these data we may , without calculation , find the place where the image of an object is formed , as well as the size of this image . Let L'A ' ( Fig . 17 ) represent the object , o ' the first focus , " the second focus , H'HH ...
Page 33
... means of the ray A'S ( Fig . 18 ) , which passes through the first principal focus p ' . All rays emanating from are parallel to the axis XY , after Hence p'S ( or A'S ) will continue having passed through the surface . its course ...
... means of the ray A'S ( Fig . 18 ) , which passes through the first principal focus p ' . All rays emanating from are parallel to the axis XY , after Hence p'S ( or A'S ) will continue having passed through the surface . its course ...
Page 60
... means of formula 5 c , the distance O L " -b , at which the image is formed . This having been ascertained , we have simply to draw the ray of direction , and to let fall a vertical line from L " . The point of intersection , of these ...
... means of formula 5 c , the distance O L " -b , at which the image is formed . This having been ascertained , we have simply to draw the ray of direction , and to let fall a vertical line from L " . The point of intersection , of these ...
Page 78
... means of the formulæ laid down for a single surface ; then the cardinal points of the crystalline , by means of the formula above given for the biconvex lens surrounded by a single medium . Finally , by combining the cardinal points of ...
... means of the formulæ laid down for a single surface ; then the cardinal points of the crystalline , by means of the formula above given for the biconvex lens surrounded by a single medium . Finally , by combining the cardinal points of ...
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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