The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
From inside the book
Results 1-5 of 86
Page vi
... retina - a calculation which , towards the end , becomes somewhat complicated - the Author has not found it neces- sary to go beyond the elementary knowledge of Mathematics which he acquired at college , when studying the obligatory ...
... retina - a calculation which , towards the end , becomes somewhat complicated - the Author has not found it neces- sary to go beyond the elementary knowledge of Mathematics which he acquired at college , when studying the obligatory ...
Page 24
... retina . It would collect the rays coming from L " , and this point would appear to it as if situated at L ' . Supposing now the incident rays to be less and less convergent , L ' and L " will recede more and more from the surface , L ...
... retina . It would collect the rays coming from L " , and this point would appear to it as if situated at L ' . Supposing now the incident rays to be less and less convergent , L ' and L " will recede more and more from the surface , L ...
Page 94
... retina of a myopic eye whose punctum remotum is situated 98.25 millimetres in front of the cornea . Such an eye is , therefore , 26-6-22.8-3.8 milli- metres longer than an emmetropic eye . If the question be to find the distance of the ...
... retina of a myopic eye whose punctum remotum is situated 98.25 millimetres in front of the cornea . Such an eye is , therefore , 26-6-22.8-3.8 milli- metres longer than an emmetropic eye . If the question be to find the distance of the ...
Page 98
... retina situated 17.92 millimetres behind the second principal point , or , in other words , must be 20 millimetres in length ( from the cornea to the retina ) . This , as we shall see farther on , is a hyperopic eye . Hence an eye that ...
... retina situated 17.92 millimetres behind the second principal point , or , in other words , must be 20 millimetres in length ( from the cornea to the retina ) . This , as we shall see farther on , is a hyperopic eye . Hence an eye that ...
Page 100
... retina . The luminous rays given off from the first focus p ' , are parallel in the interior of the eye . K " G " = 15 millimetres , is the distance from the nodal point to the retina , in the emmetropic eye . f ' represents the ...
... retina . The luminous rays given off from the first focus p ' , are parallel in the interior of the eye . K " G " = 15 millimetres , is the distance from the nodal point to the retina , in the emmetropic eye . f ' represents the ...
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
Popular passages
Page 611 - COMPEND" SERIES. A Series of Handbooks to assist Students preparing for Examinations. COMPEND of HUMAN ANATOMY, INCLUDING THE ANATOMY OF THE VISCERA. By SAMUEL OL POTTER, MA, MD, Cooper Medical College, San Francisco.
Page 611 - COMPEND of the PRACTICE of MEDICINE. By DANIEL E. HUGHES, MD, late Demonstrator of Clinical Medicine in the Jefferson Medical College of Philadelphia. Fourth Edition, revised and enlarged, Crown 8vo, Cloth, pp. 328. Price 7s. 6d. COMPEND of OBSTETRICS. By HENRY G.
Page 611 - A Compend of Obstetrics. Especially adapted to the Use of Medical Students and Physicians. By HENRY G. LANDIS, AM, MD, Late Professor of Obstetrics and Diseases of Women in Starling Medical College. Revised and Edited by WILLIAM H. WELLS, MD...
Page 615 - PRACTICAL PATHOLOGY AND MORBID HISTOLOGY. BY HENEAGE GIBBES, MD PROFESSOR OF PATHOLOGY IN THE UNIVERSITY OF MICHIGAN ; FORMERLY LECTURER ON HISTOLOGY IN THE MEDICAL SCHOOL, WESTMINSTER HOSPITAL.
Page 615 - HARE, MD, Professor of Therapeutics and Materia Medica in the Jefferson Medical College of Philadelphia ; Physician to St. Agnes...