The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
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Page vi
... render productive their wonderful scientific achievements . This may be brought about not so much by the introduction of new ointments , collyria , and other remedies , as by a more intimate know- ledge of the Physiology of the Eye ...
... render productive their wonderful scientific achievements . This may be brought about not so much by the introduction of new ointments , collyria , and other remedies , as by a more intimate know- ledge of the Physiology of the Eye ...
Page 11
... rendered still simpler if we commence by measur- ing off from B , upon the horizontal , four divisions , BI , to the right in our examples , and three divisions of equal value , BF , toward the left . From the extremity of this line ...
... rendered still simpler if we commence by measur- ing off from B , upon the horizontal , four divisions , BI , to the right in our examples , and three divisions of equal value , BF , toward the left . From the extremity of this line ...
Page 32
... ' . Something analogous to this will occur for the rays given off from the point A ' . But , in order not to render the figure perplexing , we have drawn another one ( Fig . 18 ) for. FIGS . 17 and 18 . I'A ' Α FB ". 30 PHYSICAL PORTION .
... ' . Something analogous to this will occur for the rays given off from the point A ' . But , in order not to render the figure perplexing , we have drawn another one ( Fig . 18 ) for. FIGS . 17 and 18 . I'A ' Α FB ". 30 PHYSICAL PORTION .
Page 47
... size in proportion as the object is brought nearer the lens . In other words , as long as the object is to the left of ' , the rays emanating from it are rendered convergent by the lens , BICONVEX LENS - SIZE OF IMAGE . 47.
... size in proportion as the object is brought nearer the lens . In other words , as long as the object is to the left of ' , the rays emanating from it are rendered convergent by the lens , BICONVEX LENS - SIZE OF IMAGE . 47.
Page 48
Edmond Landolt. emanating from it are rendered convergent by the lens , and form therefore a real image to the right of the latter . When it is in the principal plane , all rays coming from any point of the object are rendered parallel ...
Edmond Landolt. emanating from it are rendered convergent by the lens , and form therefore a real image to the right of the latter . When it is in the principal plane , all rays coming from any point of the object are rendered parallel ...
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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