At a glance
Humphrey matrix frequency doubling perimetry
Matrix perimetry uses frequency doubling technology (FDT) for selectively testing the function of magnocellular subtype of retinal ganglion cells. Clement et al investigated the performance of Humphrey matrix perimetry for detecting glaucomatous visual-field loss in a prospective case control study (115 POAG and 33 normal controls). Each participant performed SITA 24-2 (standard automated perimetry) and then threshold 24-2 matrix perimetry. The matrix perimetry sensitivity and specificity were up to 100% for moderate and advanced glaucomatous visual-field loss. However, matrix perimetry was less sensitive (87.3%) for detecting early glaucomatous visual-field loss compared with SITA 24-2 perimetry.
See pages 581
Projection OCT fundus imaging
Projection OCT generates en face fundus images which can be correlated with fundus photography and fluorescein angiography. Gorczynska et al used a high-speed, 3.5 μm resolution OCT prototype instrument to image 83 patients with non-exudative AMD. Projection OCT fundus images were generated from 3D OCT data by selectively summing …
