No differences between both MPDSs were found in the percentage of subjects with corneal staining > 0 at day 30 ( study : 35 % , control : 50 % ; p = 0.46 ) ; neither in the percentage of subjects with deposits on the surface of the contact lens > 0 at day 30 ( study : 26.32 % , control : 52.63 % ; p = 0.18 ) .