The refraction and accommodation of the eye and their anomalies / by E. Landolt ... translated, under the author's supervision, by C.M. Culver.

  • Landolt, E. (Edmond), 1846-1926.
Date:
1886
Catalogue details

Licence: Public Domain Mark

Credit: The refraction and accommodation of the eye and their anomalies / by E. Landolt ... translated, under the author's supervision, by C.M. Culver. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

    17/630
    CONTENTS. CHAPTER I. PHYSICAL PORTION. PAG K Luminous Point and Rays—Refraction by a Plane Surface—Index of Refrac- tion—Limit Angle—Total Reflection—Refraction by a Spherical Surface— Principal and Conjugate Foci—Image formed by a single Refracting Sur- face—Focal Planes—Cardinal Points—Several Refracting Surfaces—Focal Planes and Distances—Lenses — Biconvex Lens — Principal Focal Dis- tances—Optical Centre of the Biconvex Lens—Xodal Points of the Biconvex Lens—Conjugate Foci of the Biconvex Lens—Size of Image furnished by the Biconvex Lens — Piano-Convex Lens — The Convergent Meniscus— Biconcave Lens—Cardinal Points of the Biconcave Lens—Conjugate Foci of the Biconcave Lens—Piano-Concave Lens—The Divergent Meniscus— Infinitely Thin Lenses—Formula? for Conjugate Foci—Mutual Relations of Object and Image—Infinitely Thin Biconcave Lens—Combination of Infinitely Thin Lenses—Numbering Spectacle-Glasses—The Measure of Refraction in Practice—The Dioptry—The Combination of Three Spherical Refractive Surfaces—Dioptric System of the Eye—Principal Points and Planes of the Eye—Principal Focal Distances of the Eye—Xodal Points of the Eye— Conjugate Foci of the Eye—Size of the Image—Negative Conjugate Focus —Convergent Incident Rays — The Reduced Eye—The Artificial Eye— Combination of the Eye and a Lens, . . . . . 1-108 CHAPTER II. THEORETICAL PORTION. THE REFRACTION OF THE EYE. Dioptric Apparatus of the Eye—The Crystalline Lens—The Vitreous Body- Angle Alpha and Angle Gamma—The Dioptric System of the Eye in its relation to the Retina—Emmetropia—Ametropia—Myopia—Hypermetropia or Hyperopia—Axial Ametropia—Curvature Ametropia—Accommodation —Anatomy of the Ciliary Region—Mechani>m of Accommodation—Measure of the Accommodation—Amplitude of Accommodation—Influence of Age upon Refraction and Accommodation — Convergence—Amplitude of Con- vergence—Amplitude of Binocular Vision—Relative Amplitudes of Accom- modation and Convergence in Ametropia, .... 109-218