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 General |
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Page xvi
... Hypermetropia . Definition Optical conditions Examples . 99 73 Irregular Ast . 102 Causes 22 74 Influence of Ast . on military ser- 74 vice 103 L CHAPTER III . OBJECTIVE ASSESSMENT OF OCULAR REFRACTION . CHAPTER xvi THE ILLUSTRATED ...
... Hypermetropia . Definition Optical conditions Examples . 99 73 Irregular Ast . 102 Causes 22 74 Influence of Ast . on military ser- 74 vice 103 L CHAPTER III . OBJECTIVE ASSESSMENT OF OCULAR REFRACTION . CHAPTER xvi THE ILLUSTRATED ...
Page xxii
... Hypermetropic eye 62. Effect of rays from an Emmetropic eye on observer 63 . 64 . 99 99 99 Myopic eye on observer Hypermetropic eye on observer . 65. Refraction ophthalmoscopes . Johnson's improved ophthalmoscope 66. Arrangement for ...
... Hypermetropic eye 62. Effect of rays from an Emmetropic eye on observer 63 . 64 . 99 99 99 Myopic eye on observer Hypermetropic eye on observer . 65. Refraction ophthalmoscopes . Johnson's improved ophthalmoscope 66. Arrangement for ...
Page 5
... hypermetropic . In binocular vision , when the object which is viewed is remote , the visual lines of the two eyes are parallel , or nearly parallel , with each other ; in proportion as the object viewed approaches nearer to the ...
... hypermetropic . In binocular vision , when the object which is viewed is remote , the visual lines of the two eyes are parallel , or nearly parallel , with each other ; in proportion as the object viewed approaches nearer to the ...
Page 11
... hypermetropic eye , the distance from the nodal point to the retina will be less than it is in an elongated or myopic eye , and the rays proceeding to form the retinal image of an object , being sectionally interrupted in their course ...
... hypermetropic eye , the distance from the nodal point to the retina will be less than it is in an elongated or myopic eye , and the rays proceeding to form the retinal image of an object , being sectionally interrupted in their course ...
Page 41
... hypermetropia , the two lenses must be parallel with one another , and their two centres should be directly in front of the pupils of the two eyes ; if for correcting vision of near objects , they should be inclined at such an angle ...
... hypermetropia , the two lenses must be parallel with one another , and their two centres should be directly in front of the pupils of the two eyes ; if for correcting vision of near objects , they should be inclined at such an angle ...
Other editions - View all
The Illustrated Optical Manual: Or Handbook of Instructions for the Guidance ... T. Longmore No preview available - 2018 |
The Illustrated Optical Manual, Or Handbook of Instructions for the Guidance ... Thomas Longmore, Sir No preview available - 2016 |
Common terms and phrases
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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