Outcome variables
REFRACTIVE ERROR
The outcome variables were always assessed in the same room with lighting set at 600 Lux by the same team of four orthoptists, all of whom were masked to the participants’ interventions.The primary outcome variables were the change in SER and in AL. Cycloplegic autorefraction was carried out after instillation of cyclopentolate (Allergan CicloluxTo preserve masking, at each follow-up, VA testing was repeated with the refractive error determined at baseline worn in an optometric trial frame. An ETDRS LogMAR [