There was no statistically significant difference in stereopsis between the @ treatment groups : Frisby ( contact lens , @ -LSB- @ % -RSB- ; IOL , @ -LSB- @ % -RSB- ; P = @ ) , Randot ( contact lens , @ -LSB- @ % -RSB- ; IOL , @ -LSB- @ % -RSB- ; P = @ ) , or Titmus ( contact lens , @ -LSB- @ % -RSB- ; IOL , @ -LSB- @ % -RSB- ; P = @ ) .