![]() ![]() Eye drops constrict the blood vessels in the cornea and conjunctival capillaries, which allows the whites of the eyes to return to their usual color. Although eye drops are unlikely to treat pupil size changes, they may help alleviate bloodshot eyes. Some people may use eye drops to help with eye changes relating to marijuana. However, if you want to tell whether someone is high on weed, red eyes, and pupil dilation are the fundamental eye changes to note. Are Pupil Changes Only Linked to Weed?ĭrug use involving other substances can have the opposite effect, with people displaying pinpoint pupils (constriction). ![]() For most people, this appears as red eyes and dilation of the pupils. The way marijuana affects neurotransmitters can lead to a range of changes in the retina and ocular tissues. Dilation of the pupils occurs for the same reason. Smoking weed increases blood flow to the eye, which causes red eyes. The eyeballs are affected in several ways because of the way cannabinoids bind to receptors in the brain linked to blood flow and blood pressure. Red eyes and larger pupil size are linked to the dilation of blood vessels caused by smoking cannabis. This is where the whites of the eye (sclera) appear red or have visible blood vessels running through them. Smoking weed can cause pupils to appear larger than usual. The following side effects may cause changes to your pupil size. VIEW OUR TREATMENT CENTERS What Causes Changes to Pupil Size? ![]()
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