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 xviii
... test 149 • Varieties 145 Maréchal's lantern - test 150 . Causes of colour - blindness 146 Acuteness of colour - sense 147 Regulations for testing colour- sight in ... test - dots . 181 Return to circular xviii THE ILLUSTRATED OPTICAL MANUAL.
... test 149 • Varieties 145 Maréchal's lantern - test 150 . Causes of colour - blindness 146 Acuteness of colour - sense 147 Regulations for testing colour- sight in ... test - dots . 181 Return to circular xviii THE ILLUSTRATED OPTICAL MANUAL.
Page xix
... dots at 15 feet 187 183 By square dots at 10 feet 187 Only lowest quality of V. proved by the test - dots 188 various distances 184 • Directions on mode of using test- 185 dot cards . 189 • at various distances . Figure targets for ...
... dots at 15 feet 187 183 By square dots at 10 feet 187 Only lowest quality of V. proved by the test - dots 188 various distances 184 • Directions on mode of using test- 185 dot cards . 189 • at various distances . Figure targets for ...
Page 143
... test - dots by each eye in succession at the re- quired distance , although a slight amount of functional strabismus may be apparent , there is no sufficient cause for rejection if the test - dots cannot be counted at the regulated ...
... test - dots by each eye in succession at the re- quired distance , although a slight amount of functional strabismus may be apparent , there is no sufficient cause for rejection if the test - dots cannot be counted at the regulated ...
Page 161
... test - types ; but they were very badly printed , and were needlessly scattered by the printers , in a manner never ... dots " square by Inspector - General Dr. Lawson . When the intervals between them were each of the same size as a test ...
... test - types ; but they were very badly printed , and were needlessly scattered by the printers , in a manner never ... dots " square by Inspector - General Dr. Lawson . When the intervals between them were each of the same size as a test ...
Page 162
... test - dots on Snellen's standard are required to be counted by an eye reputed to possess normal acuteness of vision . Dr. Burchardt in the last edition of his sight - tests ( 1883 ) has adopted the metric system of measurement . The ...
... test - dots on Snellen's standard are required to be counted by an eye reputed to possess normal acuteness of vision . Dr. Burchardt in the last edition of his sight - tests ( 1883 ) has adopted the metric system of measurement . The ...
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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