would go flat out blind Sometimes it lasted 10 seconds Sometimes it lasted 5 minutes/Everything was dark; had double and triple vision; felt sick; had double and triple vision; nauseated; throwing up; This spontaneous case was reported by a patient and describes the occurrence of BLINDNESS (would go flat out blind Sometimes it lasted 10 seconds Sometimes it lasted 5 minutes/Everything was dark) in an elderly female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    In November 2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, the patient experienced BLINDNESS (would go flat out blind Sometimes it lasted 10 seconds Sometimes it lasted 5 minutes/Everything was dark) (seriousness criterion medically significant), VISUAL IMPAIRMENT (had double and triple vision), MALAISE (felt sick), DIPLOPIA (had double and triple vision), NAUSEA (nauseated) and VOMITING (throwing up). At the time of the report, BLINDNESS (would go flat out blind Sometimes it lasted 10 seconds Sometimes it lasted 5 minutes/Everything was dark), VISUAL IMPAIRMENT (had double and triple vision), DIPLOPIA (had double and triple vision), NAUSEA (nauseated) and VOMITING (throwing up) outcome was unknown and MALAISE (felt sick) had resolved.            No concomitant medications were reported.   It was reported that after the third one (1st booster) in November 2021, patient was nauseated and throwing up before she got into her house. It wasn't even 45 minutes. She felt sick and lasted 24-36 hours. She had double and triple vision. Occasionally, she would go flat out blind. Sometimes it lasted 10 seconds. Sometimes it lasted 5 minutes. Everything was dark. The person at her pharmacy told her that it wasn't side effects and brushed it off. She was told that it had nothing to do with the shot.   Recently the patient found out that she could get Pfizer. She states that this is the third year that she's been wearing masks.  No treatment details were reported.  CC:  This spontaneous case concerns an elderly female patient with no medical history reported, who experienced the serious (medically significant) unexpected adverse event BLINDNESS, which occurred unknown days after a dose of mRNA-1273 vaccine administration given as the third dose. The outcome was reported as resolved. Diagnostic workup and treatment medicaton were not reported. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report.   This case was linked to MOD-2022-662398, MOD-2022-662396 (Patient Link).; Sender's Comments: This spontaneous case concerns an elderly female patient with no medical history reported, who experienced the serious (medically significant) unexpected adverse event BLINDNESS, which occurred unknown days after a dose of mRNA-1273 vaccine administration given as the third dose. The outcome was reported as resolved. Diagnostic workup and treatment medication were not reported. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report.