Book excerpt: The fourth edition of this atlas has been completely updated to provide the latest thinking and technology developments in the use of OCT with macular diseases and glaucoma. Beginning with an introduction to OCT, the following section discusses its use with a range of conditions and disorders associated with macular diseases such as macular hole, foveal haemorrhage and retinal trauma. The final section examines the use of OCT for diagnosis and management of glaucoma. This new edition features more than 1300 illustrations including fundus photographs, fluorescein angiography and OCT images. Brief case studies are described and a new chapter on multimodal imaging has been included in this new edition. The bestselling previous edition published in 2010.