Alzheimer’s Disease: Screening Biomarkers Using Frequency Doubling Technology Visual Field

Figure 2

Frequency doubling technology readout of Alzheimer’s disease participant. The total deviation was used for the study screening purposes. The bottom of each test shows that for this participant, there were no fixation losses, no false positives, or no false negatives making both tests reliable FDT tests. The left eye had four regions of 𝑃<5% and the right eye had one region of 𝑃<5%, and one region of 𝑃<.5%. Both were reliable FDT tests, but failed screenings.