Abstract
Purpose: :
To evaluate the ability of Humphrey Matrix Frequency Doubling Perimetry (FDT) to detect homonymous defects found on Standard Automated Perimetry (SAP).
Methods: :
We studied 8 patients with homonymous defects: 3 with hemianopias and 5 with quadrantanopias. An involved quadrant was defined as at least 9 points of p < 0.5% in the pattern deviation of SAP, or the total deviation of FDT. Each quadrant was studied separately for each patient and compared to the corresponding quadrant on SAP.
Results: :
Using our criteria, FDT Matrix provided a sensitivity of 77% and specificity of 100% in detecting homonymous visual field defects.
Conclusions: :
The newer FDT Matrix has the ability to detect homonymous field defects with acceptable sensitivity and specificity.
Keywords: perimetry • neuro-ophthalmology: diagnosis • visual fields