When you have an eye exam, the optometrist might dilate your eyes as part of the process. Dilation doesn't hurt and is done so the doctor can see more of the interior of the eyeballs. Here are answers to common questions about the procedure so you know what to expect during your next appointment. 

Answers to Questions About Eye Dilation

How are a patient's eyes dilated?

There are two different types of eyedrops doctors use to dilate pupils. One drop makes the pupils larger by contracting the muscles that control its movement. Another drop causes the muscle that focuses the eye lens to relax. After the drops are put in your eyes, it will take approximately 15 to 30 minutes for pupils to dilate.

Why is eye dilation necessary?

An optometrist dilates the pupil so it remains open when exposed to light. This way, the doctor can see the structures in the back of the eye and check for abnormalities. This includes potential problems with the optic nerve, macula, and retina. The ocular damage could be caused by diabetes, high blood pressure, and other underlying health issues that need to be addressed. With a thorough eye exam that includes dilation, your doctor can also assess your risk of developing certain eye diseases later on. 

How do I prepare?

It can take a few hours for your pupils to completely return to their predilated size. In the meantime, you might experience blurred vision and sensitivity to sunlight. To prepare for the appointment, take a pair of sunglasses with you to wear afterward. Compromised vision affects the ability to drive safely, so you might want to call a ride-hailing service or ask a friend or family member to drive for you. It might be difficult to read and focus on a computer screen, so plan your work schedule accordingly as well. 

How often do I need to have my eyes dilated?

Generally speaking, dilation might be included in your eye exams once every couple of years. Eye dilation might occur more often if you have to see a specialist who treats certain eye diseases or your optometrist is monitoring a specific issue regarding your ocular health.

If you need prescription glasses or sunglasses following an eye exam, contact the professionals at Pal Optical in Lexington, KY. Serving residents in central Kentucky since 1956, the eyecare service provider carries glasses frames by Ray-Ban®, Timberland®, and other leading brands. Repairs and free adjustment services are also available. See a list of designer brands in stock online, and call (859) 266-3003 to speak with a representative.