The theory and practice of the ophtalmoscope : a hand-book for students / by John Herbert Claiborne, Jr.

Date:
1888
Catalogue details

Licence: Public Domain Mark

Credit: The theory and practice of the ophtalmoscope : a hand-book for students / by John Herbert Claiborne, Jr. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    TABLE OF OOJSTTElSrTS. CHAPTER I. PAGE. The Law of the Refraction of Light—Behavior of Rays of Light in Passing Through a Prism—The Composi- tion of Convex and Concave Lenses—The Principal Axis of Lenses—Behavior of Rays of Light Passing Through Convex and Concave Lenses—“ Secondary Rays ”—The “ Principal Focus” of Convex and Con- cave Lenses—The Varieties of Spherical Lenses— Cylindrical Glasses—Their Refraction—Their Axes, and How Marked 3-11 CHAPTER II. The Strength of Convex and Concave Lenses, and How Recorded—Tabulated Statement of'Size and Position of Images Formed by Convex and Concave Lenses— Formula for Finding Distance of Image from Lens in Convex and Concave Lenses—Reflection—State- ment of Law—Reflection from Plane Surface—Re- flection from Concave Surface—Reflection from Con- vex Surface 11-19 CHAPTER III. Optic Axis—Visual Axis — Nodal Point—Emmetropia— Ametropia— Hypermetropia— Myopia—The Angle “a”—Astigmatism—The Perception of a Line—The Near Point—The Far Point—Illustration of Far Point and Near Point—How Rays of Light Emerge from Eyes—Anisometropia (Heterometropia) 19-28