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It's important for adults 40 and older to have eye exams every 2 to 4 years to check for problems. Those who have a history of eye problems or who are at risk for developing them should see an eye doctor every year. This is particularly important if you have risk factors or a family history of eye problems.
A comprehensive eye exam can take an hour or more, depending on the doctor and the number and complexity of tests required to fully evaluate your vision and the health of your eyes.etinoscopy. Your eye doctor may perform this test early in the eye exam to obtain an approximation of your eyeglass prescription. In retinoscopy, the room lights will be dimmed and you will be given a large target (usually the big E on the chart) to fixate on.