I developed and maintain PupilPre, an R package for preprocessing and plotting pupil size data. This work is done together with Vincent Porretta, Jacolien van Rij and Juhani Järvikivi. The package is built in conjunction with and relies upon VWPre. The current version of the package can be found on CRAN: PupilPre
As with VWPre, there are several elaborated vignettes designed to help users become comfortable with the functionality of the package.