What Causes Pupillary Dilation?

Hello, the human eye is highly sensitive and should not be exposed to any external stimuli. Exposure to such stimuli can lead to redness, swelling, and pain in the eye. If pupil dilation (mydriasis) occurs, prompt medical evaluation and treatment are essential; otherwise, persistent ocular sensitivity and pain may develop, and vision may become progressively blurred over time. Pupil dilation is primarily caused by excessive external stimulation. I hope this information is helpful to you. Wishing you good health!