A method of charting and scoring the optic disc from fundus color photographs is presented. The method also permits comparative evaluation of the vessel shift. It may serve as a parameter for long-term evaluation of the optic disc. The concept of an index cupping is presented. Valid comparative studies are needed to correlate this parameter to other known parameters.
Halberg GP. Charting and Scoring the Optic Disc. Arch Ophthalmol. 1969;82(2):149-150. doi:10.1001/archopht.1969.00990020151001