The Illustrated Optical Manual, Or Handbook of Instructions for the Guidance of Surgeons in Testing Quality and Range of Vision, and in Distinguishing and Dealing with Optical Defects in GeneralLongmans, Green, 1888 - 239 páginas |
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Página 57
... Principal Meridians in Ast . - Their Refractive Conditions --- Correction of Regular Ast.- Examples - Irregular Ast . - Influence of Ast . on Military Service . Chief Varieties of Focal Adjustment . GENERAL REMARKS.— Measure of focal ...
... Principal Meridians in Ast . - Their Refractive Conditions --- Correction of Regular Ast.- Examples - Irregular Ast . - Influence of Ast . on Military Service . Chief Varieties of Focal Adjustment . GENERAL REMARKS.— Measure of focal ...
Página 58
... meridians . The principal elements of Astigmatism , however , when regarded separately , belong to one or other of the three leading optical divisions above named . The terms ISOMETROPIA , with its adjective form isometropic , are ...
... meridians . The principal elements of Astigmatism , however , when regarded separately , belong to one or other of the three leading optical divisions above named . The terms ISOMETROPIA , with its adjective form isometropic , are ...
Página 89
... principal meridians of the astigmatic eye ; the intervening meridians varying in refractive power according as they approach one or other of the two principal meridians . Either the expression of the difference between the refracting ...
... principal meridians of the astigmatic eye ; the intervening meridians varying in refractive power according as they approach one or other of the two principal meridians . Either the expression of the difference between the refracting ...
Página 91
... meridian ; distinct , normal in intensity of colour , but elongated at their ends in the direction of the Mc . meridian . Or supposing the whole eye to be Mc . , but in different degrees in its principal meridians , lines seen in the ...
... meridian ; distinct , normal in intensity of colour , but elongated at their ends in the direction of the Mc . meridian . Or supposing the whole eye to be Mc . , but in different degrees in its principal meridians , lines seen in the ...
Página 92
... principal meridians are ametropic though in different degrees ; the relative visual defects depend equally on the causes just explained . 3. By the Astigmatic Fan . - The same remarks will apply to lines when they are arranged in the ...
... principal meridians are ametropic though in different degrees ; the relative visual defects depend equally on the causes just explained . 3. By the Astigmatic Fan . - The same remarks will apply to lines when they are arranged in the ...
Outras edições - Ver tudo
The Illustrated Optical Manual, Or Handbook of Instructions for the Guidance ... Sir Thomas Longmore Visualização integral - 1888 |
The Illustrated Optical Manual: Or Handbook of Instructions for the Guidance ... T. Longmore Pré-visualização indisponível - 2018 |
The Illustrated Optical Manual, Or Handbook of Instructions for the Guidance ... Thomas Longmore, Sir Pré-visualização indisponível - 2016 |
Palavras e frases frequentes
accommodation acuteness of vision amblyopia ametropia ametropic amount of Acc appear army asthenopia astigmatic eye astigmatism axis binocular vision bull's-eye cause centre ciliary muscle colour colour-blindness concave lens convex lens cornea correcting lens correction Crown 8vo curvature cylindrical lens defect Diagnosis diffusion dioptric diplopia direction distance distant objects distant point distinct vision emmetropic examination exerted exist eye under observation feet focal fundus glasses inches keratoscopy left eye lenses lessened medical officer meridian Mc military service mirror myope myopic neutralised normal acuteness ocular ophthalmoscopic optic parallel rays patient person placed point of distinct power of Acc practice principal focus principal meridians prism rays of light rays proceeding recruit refractive defect refractive power refractive quality regards rendered retina retinal images rifle right eye seen shadow sight soldier spectacles spherical strabismus surgeon target test-dots tion unfit visual acuteness visual angle visual lines
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