  Gamma-Ray Bursts (GRBs) are fascinating events due to their panchromatic
nature. Their afterglow emission is observed from sub-TeV energies to radio
wavelengths. We investigate GRBs that present an optical plateau, leveraging on
the resemblance with the X-ray plateau shown in many GRB light curves (LCs). We
comprehensively analyze all published GRBs with known redshifts and optical
plateau observed mostly by the Neil Gehrels Swift Observatory (Swift). We fit
267 optical LCs and show the existence of the plateau in 102 cases, which is
the largest compilation so far of optical plateaus. For 56 Swift GRBs with
optical and X-ray plateaus, we compare the rest-frame end time at both
wavelengths (T*_opt , T*_X), and conclude that the plateau is achromatic
between T*_opt and T*_X. We also confirm the existence of the two-dimensional
relations between T*_opt and the optical luminosity at the end of the plateau
emission, which resembles the same luminosity-time correlation in X-rays
(Dainotti et al. 2013). The existence of this optical correlation has been
demonstrated for the largest sample of optical plateaus in the literature to
date. The squared scatter in this optical correlation is smallest for the
subset of the Gold GRBs with a decrease in the scatter equivalent to 52.4% when
compared to the scatter of the entire GRB sample.
