Ancillary Testing
Humphrey Matrix Visual Field Testing
The Humphrey Matrix represents the latest breakthrough in visual field testing. Using Frequency Doubling Technology, the Humphrey Matrix will help you conduct a thorough visual field evaluation and assess treatment alternatives. This new product is a clinically validated glaucoma management tool that enables the ophthalmologist to diagnose visual field loss early and accurately.
The frequency doubling effect occurs when black and white gratings are flickered at a high rate, resulting in the patient's perception that the grating has twice the original number of bars. The physiological substrate believed to cause this frequency doubling illusion represents approximately 2% of all ganglion cells in the retina and these specific cells are believed to be the earliest damaged by glaucoma.