• Jiancheng Mu and Wei Fan.
• Department of Ophthalmology, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China.
• Medicine (Baltimore). 2022 Dec 9; 101 (49): e31825e31825.

RationaleTo report the first case of lens dislocation and secondary acute angle-closure glaucoma (AACG) following use of a percussion massage gun (PMG) around the eye.Patient ConcernsA 69-year-old Chinese man had been using a PMG around his right eye for 2 months in order to relieve headache. After eye pain and blurred vision for 5 days, he went to the ophthalmological emergency department. His best-corrected visual acuity at distance was counting fingers.DiagnosisThe patient was diagnosed with lens subluxation, secondary AACG and pterygium in the right eye. Cataracts were diagnosed in both eyes.InterventionsThe patient underwent phacoemulsification and anterior vitrectomy. After surgery, the patient was given eye drops containing tobramycin, dexamethasone, 0.1% bromfenac sodium hydrate ophthalmic solution and Mydrin-P for 1 month.OutcomesAt 3-month follow-up, uncorrected visual acuity in the right eye was counting fingers. The outcome of optometry in the right eye was +11.50 DS/-0.50 DC * 110°, with corrected-distance visual acuity of 4/20. IOP was 20.7 mm Hg in the right eye and 15.7 mm Hg in the left. Endothelium in the right cornea showed endothelial damage. Nevertheless, the patient reported no right eye pain anymore, and he indicated that he was satisfied with his situation.LessonsCaregivers, sports professionals and the general public should be aware of the dangers of PMGs and the need to use them appropriately and safely, for example during self-massage and rehabilitation therapy. In particular, we recommend not using PMGs above the neck, which should be clearly indicated in instruction manuals.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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