Your OATR hosts discuss the pros and cons of using OCT of the Disc and OCT of the Macula for detecting, monitoring and making treatment decisions in glaucoma. Looking after glaucoma patients used to involve a visual field and disc photos. OCT of the disc and nerve fibre layer revolutionised management. Now, OCT of the ganglion cell layers at the macula adds even more information. We answer the question of which is more important in what situations and what to look for.