![]() The iris is the colored ring of your eye. ![]() Pupils constrict and dilate through muscles in your eye that are located in the iris. Their function is to let light in and direct that light to your retina, which are the nerves at the back of your eye, allowing you to see. Pupils shrink (constrict) and grow (dilate) in response to varying light levels. Pupils are the black circle in the center of your eye. These situations are ones that a lot of us are familiar with, but what about other instances that cause dilated pupils?ĭid you know that certain drugs can cause dilated pupils? In today’s blog, we’ll explore why pupils dilate, what substances cause dilated pupils, potential risk factors of dilated pupils, and managing dilated pupils. After a few moments in the parking lot, your eyes soon adjust and you don’t feel as blinded anymore. That’s because when you’re sitting in a dark theater, your pupils dilate, but the sudden move from a dark theater to a sunny area is faster than your eyes adjust. Similarly, when you walk out of a dark theater into a sunny parking lot, you might feel blinded by too much light. However, when you give your eyes time to adjust, the pupils dilate (expand) to take in more light and you can see. When you walk into a dark room after being in a light-filled room, it can be difficult to see. In regular lighting your eyes also adjust. By opening up your pupils, eye doctors can take a better look at your eyes and examine them more closely for any abnormalities. You might also recall your most recent visit to the eye doctor where your doctor put some special eye drops in your eyes to dilate your pupils. 11, 2018.Most people are usually familiar with what dilated pupils are, and chances are you are as well! When you were younger you might have shone a flashlight into one of your eyes and watched your pupil shrink before moving the light away and watching it dilate again. Frequency of ocular examinations - 2015.What to expect when your eyes are dilated.What is a comprehensive dilated eye exam? National Eye Institute. ![]() Comprehensive adult medical eye evaluation - 2015.Some conditions requiring follow-up examinations may not need dilation at every visit unless there are new symptoms or concerns. Certain symptoms may require a dilated examination to determine the cause. The reason you are seeking an eye evaluation.Certain diseases, such as diabetes, increase the risk of eye disease. Having a history of eye diseases that affect the back of the eye, such as retinal detachment, may increase your risk of future eye problems. Black people and Hispanics, who are at increased risk of glaucoma, are advised to have a dilated eye exam every one to two years, starting at age 40. People of certain ethnic backgrounds are at increased risk of some eye diseases. The National Eye Institute recommends a dilated eye exam once every one to two years if you're 60 or older. The risk of eye diseases increases with age. ![]() In determining whether eye dilation is necessary for you, your eye doctor may consider: Alternatives to dilation are available, but they aren't as effective for allowing a careful examination of the back of your eye. So if eye dilation is greatly inconvenient, ask your doctor about arranging another appointment. Eye dilation also makes your vision blurry and your eyes more light sensitive, which, for a few hours, can affect your ability to drive or work.
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