A nomogram is presented which enables the clinician easily to find the ratio of accommodative convergence to accommodation from routine clinical measurements. The only measurements needed are the near and distant heterophorias (or heterotropias) and the interpupillary distance.
Reinecke RD. AC:A Nomogram. Arch Ophthalmol. 1967;77(6):788. doi:10.1001/archopht.1967.00980020790014