Prisms: Their Use and EquivalentsP. Blakiston's Son & Company, 1913 - 144 pages |
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Common terms and phrases
33 centimeters adduction ametropia ametropic correction amount angle of incidence angle of refraction appears displaced astigmatism axis 45 base down axis base up axis base-apex line Cloth cobalt blue glass concave convergence convex crown glass cyclophoria cycloplegic Cyclotropia decentered 10 millimeters deviate a ray diopters diplopia distance Edge or Apex Edition equivalent exophoria geometric center heterophoria heterotropia horizontal Hyperexophoria hyperopia Illustrations incident ray index of refraction instance JAMES THORINGTON lateral deviation left eye left hyperphoria lens lenses Maddox Double Prism meridian metamorphopsia meter angle millimeters muscle muscular object oblique Octavo Ophthalmic Surgeon Ophthalmology optic and geometric optic center parallel patient perpendicular Philadelphia Polyclinic phorometer presbyopes prescribed prism Fig prismatic effect Professor of Diseases radian ray of light refracted ray RETINOSCOPY right eye right hyperphoria ruby red glass scale second surface sine sphere square prism squint straight line streak strength substance tangent trial-frame vertical visual axis writer
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Page 123 - Cloth, $4.50; Sheep, $5.50 GOULD AND PYLE. Compend of Diseases of the Eye and Refraction. Including Treatment and Operations, and a Section on Local Therapeutics. With Formulae, Useful Tables, a Glossary, and in Illus., several of which are in colors.
Page 6 - The quotient found by dividing the sine of the angle of incidence by the sine of the angle of refraction, is called the index of refraction.
Page 130 - LANE MEDICAL LIBRARY STANFORD UNIVERSITY MEDICAL CENTER STANFORD, CALIFORNIA 94305 Ignorance of Library's rules does not exempt violators from penalties.
Page 88 - This instrument is designed for the determination and measurement of insufficiencies of the various ocular muscles and is based on the principle that the image in one eye throughout every test shall be undisturbed. It consists principally of a rotary variable prism correctly marked in degrees and lettered to show the various conditions of muscular imbalance, such as exophoria, esophoria, hyperphoria, etc. On each side of the rotary prism are cells, in one of which, toward the patient's face, is to...
Page 10 - This unit is called the radian, and is defined as the angle subtended at the center of a circle by an arc equal in length to the radius of the circle.
Page 123 - DR. JOSEF MELLER, Privatdocent and First Assistant KK II University Eye Clinic, Vienna. Second Edition, Revised and enlarged, edited by WILLIAM M. SWEET, MD, Professor of Diseases of the Eye, Philadelphia Poly clinic; Clinical Prof, of Ophthalmology, Jejferson Medical College; Attending Surgeon, Wills Eye Hospital, Philadelphia.
Page 123 - OPHTHALMIC SURGERY. A Treatise on Surgical Operations Pertaining to the Eye and Its Appendages, with Chapters on Para-Operative Technic and Management of Instruments.
Page 123 - A PRACTICAL HANDBOOK ON THE MUSCULAR ANOMALIES OF THE EYE. By Howard F. Hansell, AM, MD. Clinical Professor of Ophthalmology, Jefferson Medical College...