Examples of OHTS Visual Field Abnormalities
from the Visual Field Reading Center

View Classifications & Definitions


NERVE FIBER BUNDLE ABNORMALITIES
Nasal Step
MILD
SEVERE
Limited field loss adjacent to the nasal horizontal meridian with at least one abnormal point (p < 5%) at or outside 15 degrees on the meridian. Cannot include more than two significant points (on either plot) in the nerve fiber bundle region on the temporal side.
Partial Arcuate
MILD
SEVERE
Visual field loss in the nerve fiber bundle region that extends incompletely from the blind spot to the nasal meridian. The defect is generally contiguous with either the blind spot or the nasal meridian and must include at least one abnormal location in the temporal visual field.
Arcuate
MILD
SEVERE
Significant visual field loss in the nerve fiber bundle region, extending across contiguous abnormal points from the blind spot to at least one point outside 15 degrees adjacent to the nasal meridian.
Altitudinal
Severe visual field loss throughout the entire superior or inferior hemifield that respects the horizontal midline, with the majority of points in the hemifield having a p < 0.5% value on the total deviation plot and the entire horizontal midline demonstrating abnormality.

OTHER ABNORMALITIES

Paracentral
A relatively small visual field abnormality (a cluster or a single point) in the nerve fiber bundle region that is generally not contiguous with the blind spot or the nasal meridian. In particular, it does not involve points outside 15 degrees that are adjacent to the nasal meridian.
Temporal Wedge
A small visual field defect that is temporal to the blind spot.
Vertical Step
Limited visual field loss that respects the vertical meridian and that includes at least two abnormal points at or outside 15 degrees along the vertical meridian.
Quadrant
Significant visual field loss throughout an entire quadrant that respects the vertical midline. Essentially all points must have a p < 5% value on the Total Deviation Plot.
Hemianopia
A visual field defect that respects the vertical meridian and that involves essentially all points in a vertical hemifield.
Partial
Hemianopia
A visual field defect that respects the vertical meridian and that is greater than one quadrant but less than a complete vertical hemifield.
Central
Visual field loss that is predominantly in the macular region. The foveal threshold must have a p < 5% value. Can be associated with a single hemifield and paired with another defect.
Peripheral Rim
Generally continuous visual field loss outside 15 degrees in all four quadrants, with usually no visual field loss inside 15 degrees on either deviation plot. There must be visual field loss temporal to the blind spot.
Partial Peripheral Rim
Generally continuous field loss outside 15 degrees, but not in all quadrants and must have some curvature.
Widespread
MILD
SEVERE
Diffuse visual field loss that includes all four quadrants. The GHT may show a General Reduction of Sensitivity or the MD must show p < 5%. The CPSD/PSD must not show a p < 5% value. The majority of abnormal points on the Total Deviation Plot are not abnormal on the Pattern Deviation Plot.
Total Loss
Severe widespread visual field loss (MD = -20.00 dB).
Superior Depression
Two or more abnormal points in the very superior region.
Inferior Depression
 
Two or more abnormal points in the very inferior region.