Determining an individual’s visual field is important in the diagnosis of many disorders, in particular, the disorders of the optic nerve and the brain. These disorders include glaucoma (a disease of the optic nerve), brain tumors and strokes. The computerized visual field analyzer systematically plots the field of vision using threshold testing, which determines retinal sensitivity and its deviation from the age related norms.
Orangeville Optometric Centre uses several technologies for this purpose. Two such instruments are the Humphrey Visual Field Analyser (HFA) and the Heidelberg Edge Perimeter (HEP). Having the advantage of incorporating multiple technologies allows us to detect diseases earlier and with much more confidence. Below are sample printouts of both instruments.
Sample of Humphrey Visual Field with early glaucoma damage
Normal Humphrey Visual Field
Sample of Heidelberg Edge Perimeter with early glaucoma
Heidelberg Edge Perimeter with borderline findings
Macular Degeneration Video Collection
Dry Eye Video Collection
Eye Surgery Video Collection
Glaucoma Video Collection
Healthy Vision Video Collection
LASIK Video Collection
Optical Video Collection
Retina Video Collection