Your optometrist examines many parts of your eyes during an eye exam to determine any problems. In fact, just by looking at your pupils, we can already gather some information about your eye health. Here’s how:
How Your Pupils Work
Your pupils refer to the small, black balls in the center of your eyes. It’s actually an opening that serves as the entrance for light rays into your eyes. Its size typically ranges from two to eight millimeters. It is surrounded by the iris, the colored part of your eyes. It regulates the size of your pupils. Your pupils and iris work together to control the amount of light entering your eyes.
Your eye doctor explains that whenever you’re in a bright place, your iris contracts, causing your pupils to become smaller. This way, only a small amount of light can pass through and your eyes don’t become overwhelmed with too much light. When you’re in the dark, on the other hand, your iris dilates, resulting in larger pupils and allowing more light to enter your eyes.
Eye Conditions Related to Pupil Size Changes
When one of your pupils is wider than the other, this condition is called anisocoria. While research shows around 20% of the population have this, it can also indicate nerve infection or other similar problems. Your pupils might become asymmetrical too when you have a concussion. One pupil may be smaller and the other bigger. Cluster headaches cause multiple headaches in a day, which usually affects only one side. You might also notice that the pupil on the affected side is abnormally small.
Your myopia control specialist shares that your pupil size may also have an impact on you getting LASIK or laser eye surgery. Those with large pupils are often not considered to undergo this procedure because it is often associated with a higher risk of seeing glare or halos following the surgery. If that happens, it might just cause you even more problems with your vision.
For more information about your pupils and what they can say about your eye health, schedule an appointment with a myopia control expert in your area today.