To report a case of unilateral mydriasis after accidental exposure to an Angel's trumpet leaf.

A 53-year-old woman visited the Eye Department complaining of blurred vision and difficulty in light adaptation in the left eye of 1-week duration. The best corrected visual acuity was 20/20 in both eyes and other ophthalmological findings were considered normal except for dilation of the left pupil and a decrease in light reflex. The patient was initially unaware of any cause of her eye problems, but when asked specifically, the patient remembered an Angel's trumpet leaf brushing against her left eye when she carried the plants. There were no other previous medical or drug histories, thus the Angel's trumpet was considered as the cause for the unilateral mydriasis. The patient's progress was followed for a week, her symptoms improved and the pupil size and reflex returned to normal.

The cultivation of Angel's trumpet has become increasingly popular in Korea in recent years. The present case emphasizes the importance of an accurate and detailed history regarding specific contact history with plants like Angel's trumpet in otherwise healthy patients affected by unilateral mydriasis.