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. 2021 Apr 28;62(5):7. doi: 10.1167/iovs.62.5.7

Table 4.

Control Group, Randomization, and Masking of Recent Myopia Control Trials

Author, Year Intervention Control Rando-mization Strati-fication Masking Initial Study Length, y Rebound Assessment
Kanda et al., 2018144 Spectacle (novel plus design) Spectacle (SV) Y N Y 2 N
Lam et al., 2020132 Spectacle (novel plus design) Spectacle (SV) Y N Y 2 N
Li et al., 2019146 OK Spectacle (SV) N N N 1 Y (1 month)
Ruiz-Pomeda et al., 2018145 SCL (concentric bifocal) Spectacle(SV) Y Y N 2 N
Chamberlain et al., 2019134 SCL (concentric bifocal) SCL (SV) Y Y Y 3* Y (planned)
Sankaridurg et al., 2019135 SCL (multifocal and novel design) SCL (SV) Y N Y 2 N
Walline et al., 2020136 SCL (multifocal +1.50 and +2.50 add) SCL (SV) Y Y Y 3* Y (planned)
Azuara-Blanco et al., 2019147b Atropine (0.01%) Placebo Y N Y 2 N
Joachimsen et al., 2019147 Atropine (0.01%) None N N N 1 N
McCrann et al., 2019148 Atropine (0.01%) Placebo Y Y Y 3 Y (study year 3)
Yam et al., 2019149 Atropine (0.01%, 0.025%, 0.05%) Placebo (year 1 only) Y Y Y 3 Y (study year 3)
Huang et al., 2019150 SCL (multifocal) plus atropine (0.01%) Historical (SCL SV and SCL multifocal) N N N 3 N
Tan et al., 2019151 OK plus atropine (0.01%) OK only Y N Y 2 N

SV, single vision.

*Followed for an additional period after ending randomization.

Based on communication with authors.