The Heidelberg Retinal Tomograph (HRT) is a computerised laser-scanning device specifically designed to help diagnose glaucoma.
Using scanning laser tomography to produce 3-dimensional images, the HRT allows precise measurements of optic nerve head parameters; in order to differentiate between normal eyes and glaucomatous eyes even before visual field defects are present.
Some studies have show that changes could be detected up to eight years earlier. It also allows for accurate comparison on follow-up examination.
Additionally, the HRT is a powerful tool for aiding in the diagnosis and management of retinopathies such as Age-Related Macular Degeneration and Diabetic Retinopathy.