What is the range of normal variations in the optic nerve head appearance? -- What are the characteristic changes to the optic nerve head in glaucoma and how do they evolve over time? -- How to interpret optic disc in myopes? -- What are the key clinical skills and investigative techniques for disc evaluation? -- How to reduce error in optic nerve head examination? -- What imaging errors occur when evaluating the optic nerve head? -- How to interpret difficult optic discs? -- How to accurately assess the severity in people with glaucoma or at risk for developing glaucoma -- What optic nerve head conditions mimic glaucoma? -- Getting better - Learning, new tools and risk management.

The book provides a detailed description in color format of the optic nerve head changes that occur in glaucoma. It explains the normal and variant anatomy of an optic nerve head and why certain discs are more or less likely to develop glaucomatous changes. This book attempts to explain the anatomical basis of common and not so common signs seen in optic nerve head and retinal nerve fibre layer as captured by a digital fundus imaging system and optical coherence tomography. It also includes optic nerve head conditions mimicking glaucoma. The book is relevant for practicing ophthalmologists, vision science researchers, clinical optometrists, postgraduate residents in ophthalmology, sub-specialty fellows as well as general ophthalmologists, neurologists and neurosurgeons.