Table 2

 Percentage of patients within plus or minus 0.5D and plus or minus 1.0D of intended correction

Within plus or minus 0.5D at 6 monthsWithin plus or minus 0.5D at 5 yearsWithin plus or minus 1.0D at 6 monthsWithin plus or minus 1.0D at 5 years
All levels72%60%89%83%
Mild90%70%100%96%
Moderate80%66%96%91%
Severe33%33%61%50%