Optical aids
Percentage of persons aged 4 years or older who answered ‘Yes’ to the question ‘Do you/does your child ever wear glasses?’, ‘Yes’ to the question ‘Do you/does your child ever wear contact lenses?’, or ‘Yes’ to the question ‘Do you/does your child ever use another optical or reading aid?’
For children younger than 12 years of age, the questions are answered by a parent/carer.