Left arm injection site red and swollen; Left arm injection site red and swollen; General muscle soreness; booster/3rd dose that he received 18Aug2021; booster/3rd dose that he received 18Aug2021; Vision changes; short term memory loss; This is a spontaneous report from a contactable consumer or other non hcp (patient) via medical information team. A 78-year-old male patient received third dose of bnt162b2 (COMIRNATY, formulation: solution for injection; batch or lot number: FC3181) via an unspecified route of administration, administered in left arm (unable to confirm if given in the muscle) on 18Aug2021 around mid day (at the age of 78 years old) as dose 3, single for COVID-19 immunization. The patient's medical history reported as none and there were no concomitant medications. No prior vaccinations within 4 weeks and no other vaccine administered on same date of Pfizer vaccine. Patient previously received first dose of bnt162b2 (COMIRNATY, formulation: solution for injection; batch or lot number: EN9810) via an unspecified route of administration, administered in left arm (unable to confirm if given in the muscle) on 17Feb2021 (at the age of 77 years old) as dose 1, single for covid-19 immunization and received second dose of bnt162b2 (COMIRNATY, formulation: solution for injection; batch or lot number: EN6200) via an unspecified route of administration, administered in right arm (unable to confirm if given in the muscle) on 10Mar2021 (at the age of 77 years old) as dose 2, single for covid-19 immunization. On 18Aug2021, the patient received booster or 3rd dose, on 19Aug2021, the patient experienced left arm injection site red and swollen and general muscle soreness, on unspecified date on 2021, the patient experienced short term memory loss and vision changes. Patient got vaccine on 18Aug2021, and the injection site was red and swollen for about 2 weeks and he also had general muscle soreness for 5 weeks. He does not have any problem with the injection site anymore. He also had vision changes. At first it was a little blurry and that part has cleared up. He also had a problem with his sight where it was off to the side of what he was looking at. If he was looking for something, he would look where he thought it was, and he did not see it. After looking again, it was right off to the side. patient also had a lessening and diminishing of short term memory. This started shortly after he got the vaccine. He does not remember the exact date. Patient concerned about vision and memory loss. He would like to see if there are others who have had this and if there is a timeline of how long it will continue. Reporter assessed case as non serious. Adverse events not resulted in emergency room visit and hospitalization but resulted in physician office visit. The patient underwent lab tests and procedures which included blood work (regular check up) results normal on unspecified date, eye test (ophthalmological examination) results 20/20 on 02Sep2021. The outcome of the events short term memory loss and vision changes was not recovered, outcome of the events left arm injection site red and swollen and general muscle soreness was recovering.  Follow-up attempts are completed. No further information is expected.