The range of time that pupils dilate varies for each person, but the majority of cases will go back to normal on their own. Pupils are supposed to change in size as a reaction to light and normal events in your life. Similar to how your body reacts in a “fight or flight” adrenaline situation, lying can cause hormones and chemicals associated with stress to trigger eye dilation. Stress can stimulate adrenaline hormones to react, resulting in dilated pupils, increased heart rate, high blood pressure and excessive sweating. The hormones and chemicals released from the adrenal glands send nerve impulses to organs, leading the body to react in a “fight or flight” mode. In some cases, anxiety can cause pupils to dilate as a result of adrenaline. Oxytocin also plays a role in controlling key aspects of the reproductive system, including sperm transportation and production, childbirth and breastfeeding. Pupil dilation can be attributed to an increase in the hormone and neurotransmitter oxytocin, which acts as a chemical messenger during sexual arousal. Pupil dilation that's a reaction to an emotional factor (adrenaline, attraction, stress) could have a shorter duration, and the pupil could return to normal size in as little as two to three minutes.ĭo your pupils dilate when you love someone? If pupil dilation is the side effect of a medication or drug, the duration may vary based on the type of drug and the dosage taken. The length of time is dependent on the type of drop used and how your body responds to it. If you received dilating eye drops from an ophthalmologist, your eyes could be dilated between four and 24 hours. Surgery (to repair eye damage from injury).Prosthetic contact lenses (to improve the appearance of eyes as the result of varying pupil size caused by trauma).Wearing sunglasses to reduce sunlight sensitivity (photochromic lenses, polarized lenses).For more serious cases of mydriasis, further treatment is required, including: Most of the time, dilated pupils will return to normal on their own without treatment, especially if they are the result of eye drops. Often, dilated pupils will cause symptoms based on how light reaches the eye. Ocular migraine (one eye can experience a sudden array of changes, similar to migraine sufferers without the headache.).Microvascular cranial nerve palsy (blood flow to nerves is blocked).Anisocoria (both pupils are different sizes).Adie's pupil (abnormal pupil response to light in one eye).Some medical conditions or injuries also dilate pupils, including: What medications cause my pupils to dilate?Ĭertain over-the-counter and prescription medications can also lead to dilated pupils, including: What recreational drugs cause dilated pupils?Ĭertain recreational drugs can dilate pupils, including: Sexual arousal (increased production of oxytocin hormone). ![]()
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