From the 2008 National Health Interview Survey:
When was the last time you had an eye exam in which the pupils were dilated? This would have made you temporarily sensitive to bright light.
Among adults, the appropriate time interval for getting a dilated eye exam is generally considered to be within the past 2 years. Adults who respond “less than 1 month,” “1 to 12 months,” or “13 to 24 months” to the above question are considered to be getting a dilated eye exam within the appropriate time interval. Among persons with diabetes, the appropriate time interval is 1 year. Adults with diabetes who respond “less than 1 month” or "1-12 months" to the question are getting a dilated eye exam at the appropriate interval.
This Indicator uses Age-Adjustment Groups: