Ski-optometer Master Model 215
Embodying in a Single Instrument, in Convenient Form,
Cylindrical and Spherical Lenses, in Combination
with Appliances for Testing and Correcting
Muscular Imbalance.
Refraction and
Muscular Imbalance
As Simplified Through the Use
of the Ski-optometer
By
DANIEL WOOLF
WOOLF INSTRUMENT CORPORATION
New York: 516 Fifth Avenue
Copyright 1921
By WOOLF INSTRUMENT CORPORATION
Published by
Theodore S. Holbrook
New York
CONTENTS
| Page | |
| Chapter I | |
| Ski-optometer Construction | 1 |
| Convex Spherical Lenses | 2 |
| Operates and Indicates Automatically | 6 |
| Concave Spherical Lenses | 7 |
| Chapter II | |
| Cylindrical Lenses | 10 |
| Obtaining Correct Focus | 11 |
| Why Concave Cylinders Are Used Exclusively | 14 |
| Transposition of Lenses | 14 |
| Chapter III | |
| How the Ski-optometer Assists in Refraction | 17 |
| The Use of the Ski-optometer in Skioscopy | 17 |
| A Simplified Skioscopic Method | 20 |
| Employing Spheres and Cylinders in Skioscopy | 22 |
| Use of the Ski-optometer in Subjective Testing | 23 |
| A Simplified Subjective Method | 24 |
| Procedure for Using Minus Cylinders Exclusively | 26 |
| Constant Attention Not Required | 29 |
| Chapter IV | |
| Important Points in Connection with the | ... BU KİTABI OKUMAK İÇİN ÜYE OLUN VEYA GİRİŞ YAPIN!Sitemize Üyelik ÜCRETSİZDİR! |