Glaucoma includes a group of eye diseases which lead to damage in the optic nerve and can cause vision loss. The most common type is wide angle glaucoma, also known as open angle glaucoma, in which the drainage angle for fluid within the eye remains open. The other types of glaucoma are narrow angle or closed angle glaucoma and normal tension glaucoma which are less common. Wide angle glaucoma occurs slowly over time and causes no pain. A cataract is a cloudy area in the lens of one or both eyes that develops slowly and results in a decrease in vision. Its symptoms comprise blurry or double vision, faded colors, trouble with bright lights, halos around light and trouble seeing at night. This book is a compilation of chapters that discuss the most vital concepts and emerging trends in the management of cataracts and glaucoma. It will also provide interesting topics for research which interested readers can take up. Through this book, we attempt to further enlighten the readers about the new concepts in this field of research.