For us to thoroughly check your eyes, we must periodically use eye drops to dilate the pupils of your eyes. Most people should have their pupils dilated at least every 2-4 years and patients with certain conditions like diabetes will need to be dilated more frequently. The drops take 20 minutes of additional waiting to take effect. You may need to plan on at least one hour for your visit. If it is inconvenient to be dilated, you may reschedule this test, at no additional charge. Also, the drops can take several hours to wear off during which time your eyes will be more light sensitive and reading will be difficult. Most people can drive while their pupils are dilated but you may prefer having someone else drive you home. We offer reversal drops which reduce the time your pupils are dilated.