Agarwal's Principles of Optics & Refraction, 5e

"Key Features:
The book has been revised with addition of material on lasers, elaborating descriptions on several optical principles adding new diagrams to make the written matter more understandable. Use of cross cylinders and its optics have been given in greater details to enable the student to put them in practical use.
Use of keratometers, their principles and optics have been revised.
To the description of autorefractors has been added some relevant material.
Some classifications have been tabulated before their descriptions, e.g., classification of anisometropia, aniseikonia, anomalies of accommodation, components of convergence. Convergence insufficiency has also been tabulated.
At several places in ocular motility diseases, convergence, accommodation, etc. more details have been added including anatomical and physiological.
Classification of squint has been tabulated.
Material has been added in the chapter of contact lenses to make it more lucid.
Low vision aid still poses a problem. Considerably more material has been added in this chapter. Malingering is becoming more common with increasing industrialisation of the country. In view of this, information with regard to malingering tests is included in this edition.
This book has been so thoroughly revised that it has become quite comprehensive; though the style of presentation has been preserved in single colour"