HEIDELBERG EDGE PERIMETER (HEP)
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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.Related Products
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The “Edge” Stimulus
HEP uses a new stimulus – Flicker Defined Form (FDF) – which generates an illusory “edge” contour – a high temporal frequency driven illusory stimulus optimized for preferential stimulation of the magno-cellular system for early diagnosis and identification of disease progression.
Structure & Function
HEP visual field results join OHTS-proven HRT structural analysis, giving a combined Structure-Function Map (SFM) in a single HEYEX (Heidelberg Eye Explorer) database and on a single print out. By evaluating trend analyses of both structure and function, a rate of change may be confirmed at the early stages of the disease process. A measured rate of progression may help in the assessment of a patient’s risk of vision loss and the decision to instigate or change treatment. The new Structure-Function Map helps our understanding of glaucoma pathogenesis and improves clinical diagnosis and management.
HEP makes it possible to explore new ideas. You can have access to the system to program your own stimuli and data analysis.
• Flicker defined form testing
• Structure & function analysis when combined with the HRT
• Test in normal room lighting
• Constant fixation monitoring
• Real time display of reliability parameters
• Standard automatic perimetry tests (40dB to 12dB sensitivity range)
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