Optic nerve: Heidelberg retinal tomography

Abstract

Before looking at an HRT printout, it is important to understand why the test was ordered. The HRT has two roles in practice, first to assist the clinician in diagnosing glaucoma and second to assist the clinician in identifying glaucomatous progression. The current HRT 3 software can generate eight different printouts (Table 3.1), two of which (trend report and TCA overview) summarize progression algorithms; these will be discussed in question 3.3. The remaining six printouts (minimal report, Moorfields report, OU Quickview Report, OU Report, Stereometric Report, and Stereometric with Moorfields Report) summarize data from a single scan (in the case of OU reports - from both eyes) and should be used to help the clinician decide whether or not features of the optic nerve head (ONH) are suggestive of glaucomatous optic neuropathy. Information from HRT printouts alone will not be sufficient to make a diagnosis of glaucoma; this requires interpretation of the results in the context of patient history, clinical examination, and perimetry findings. © 2010 Springer-Verlag Berlin Heidelberg.