Official recommendations were set by the American Optometric Association (AOA), as follows:
Adults who wear eyeglasses or contact lenses should have an annual eye exam. If no corrective lenses are needed, then an eye exam can be scheduled every two to three years until age 40. After 40 years old it is advised to go more frequently, as the incidence of many common eye diseases, such as presbyopia and macular degeneration, is increased. Any adult with health issues such as diabetes, high blood pressure or other disorders, may need extra eye examinations – as per the doctor’s instruction.
Children should first have their eyes examined as early as 6 months old, to check for normal visual development. After this, the next evaluation is done at 3 years of age, followed by an additional exam before the child begins school. If no problems are detected, then annual eye exams are recommended for all school-aged children. When vision difficulties or conditions are diagnosed, it may be necessary to go for follow-up eye examinations more regularly than once a year.