didn't feel right; went blurry/double vision; strange sensation in head like was going to faint; sudden onset of visual disturbance/blurred vision / was watching tv and went blurry/double vision; sudden onset of visual disturbance/blurred vision and unable to focus; this is a spontaneous report received from a contactable reporter(s) (pharmacist) from the regulatory authority. the reporter is the patient. regulatory number: ie-ra-2022-092900 (ra). other case identifier(s): ie-ra-cvarr2022020925765 (ra). a 39 year-old female patient received bnt162b2 (comirnaty), administration date 28jan2021 (lot number: em0477) as dose 2, 0.3 ml single for covid-19 immunisation. the patient had no relevant medical history. there were no concomitant medications. vaccination history included: covid-19 vaccine (dose 1; manufacturer unknown), for covid-19 immunisation. the following information was reported: feeling abnormal (medically significant) with onset 30jan2021, outcome "unknown", described as "didn't feel right"; diplopia (medically significant) with onset 30jan2021, outcome "unknown", described as "went blurry/double vision"; dizziness (medically significant) with onset 30jan2021, outcome "unknown", described as "strange sensation in head like was going to faint"; visual impairment (medically significant) with onset 30jan2021, outcome "unknown", described as "sudden onset of visual disturbance/blurred vision / was watching tv and went blurry/double vision"; vision blurred (medically significant) with onset 30jan2021, outcome "unknown", described as "sudden onset of visual disturbance/blurred vision and unable to focus". therapeutic measures were not taken as a result of feeling abnormal, diplopia, dizziness, visual impairment, vision blurred. 2 days later, on 30jan2021, the patient had a sudden onset of visual disturbance/blurred vision and she was unable to focus. she was watching tv and went her vision went blurry/ she had double vision. the patient went to lie down and she kept her eyes closed. she didn't feel right. she had a strange sensation in her head like she was going to faint. it resolved after around 10 minutes, but a similar episode took place once after that event. the patient added that she did not get around to reporting the event at the time, especially as it resolved, but she thought it was triggered by the second dose of vaccine. the patient did not take any treatment, she only laid down. at the time of reporting, the outcome of the patient's reaction was unknown. no follow-up attempts are possible. no further information is expected