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Validated by more than 30 years of research, design and clinical experience, the Humphrey Field Analyzer 3 (HFA3) offers the latest in gold-standard perimetry performance with technological advances. These advances are designed to save time and reduce errors in diagnosing and managing glaucoma. The automated perimetry test uses a computer program to test an individual’s field of vision. The HFA3 measures areas or patterns of vision loss that may be the result of many different diseases like glaucoma, macular degeneration, multiple sclerosis, stroke, brain tumor, high blood pressure, etc.