• The Heidelberg Edge Perimeter (HEP) uses preferential testing of the magno-cellular system to enable early detection of functional loss and disease progression.

    Most commonly used visual field tests are broadband in nature and provide a general evaluation of visual function. But selective testing of the visual pathway enables the earlier detection of damage. HEP can selectively test the magno-cellular pathway for detection of early functional loss, whether such loss is selective or not.