Table 2

 Distribution of corrected visual acuity with spectacles and rigid contact lenses

Visual acuitylevelWith spectacle correctionWith rigid contact lenses
No (eyes)CumulativeNo (eyes)Cumulative
6/4.50%75.3%
6/50%69.85%
6/63633.3%11093.18%
6/7.5840.7%0%
6/92261.1%0%
6/1242100%596.97%
6/150%399.24%
6/180%1100%
Total108 eyes100%132100%