Quantification of Glaucomatous Threshold Visual Field Loss Based on Neuromorphometric Correlates

There has been no perimetric index or scoring method available to quantify both glaucomatous and neuro-ophthalmic threshold field defects on a continuum, with emphasis on neuronal correlates and presumed damage. The absolute-relative-total scotoma (ARTS) scoring algorithm identifies the percentage of absolute, relative and total scotoma components of static threshold perimetric results. ARTS scoring involves weighing the eccentricity level of each test location on a given test grid according to the receptive field densities of the ganglion cells of the retina, and incorporates current knowledge of neuromorphometric correlates among retina, occipital cortex and central visual field1-3. We compared the ARTS scoring method to other scoring methods and established its retest variability in glaucoma.