This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient. A 77 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 17Mar2021 15:30 (Batch/Lot number: unknown) at the age of 77 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Anemia" (unspecified if ongoing), notes: Verbatim: Anemia; "Diabetes" (unspecified if ongoing), notes: Verbatim: Diabetes; "heart problems" (unspecified if ongoing), notes: Verbatim: heart problems; "Heart attack", start date: 1992 (unspecified if ongoing), notes: Verbatim: He had 2 heart attacks one in 1992 and then one in June1996; "Bypass surgery", start date: Aug1996 (unspecified if ongoing), notes: Verbatim: he had 5x bypass surgery in Aug1996; "Heart attack", start date: 1996 (unspecified if ongoing), notes: Verbatim: He had 2 heart attacks one in 1992 and then one in June1996; "eye problems from his diabetes" (unspecified if ongoing). Concomitant medication(s) included: METFORMIN taken for diabetes mellitus, start date: 22Mar2021; NOVOLOG taken for diabetes mellitus, start date: Aug1996; CARVEDILOL, start date: 1996; PLAVIX, start date: Aug1996; XARELTO taken for pulmonary embolism, start date: Aug2013; LANTUS, start date: Aug1996; LEVOTHYROXINE; ALLOPURINOL; CRESTOR; LOSARTAN; JARDIANCE.The following information was reported: VISION BLURRED (non-serious) with onset 21Mar2021, outcome "not recovered", described as "blurred vision"; READING DISORDER (non-serious) with onset Mar2021, outcome "unknown", described as "I cannot read"; VISUAL IMPAIRMENT (non-serious) with onset Mar2021, outcome "unknown", described as "The caller cannot see well".Additional information: No one has found what was the cause of anaemia. No family medical history relevant to AE. No additional vaccines administered on same date of the Pfizer suspect. No prior vaccinations (within 4 weeks). Concomitant medication Plavix for his heart, Xarelto for Pulmonary embolus 7 years ago, Levothyroxine: Started 15 years ago, Allopurinol: Started over 10 years ago for his kidneys. The caller is planning on calling his Ophthalmologist. The caller already has eye problems from his diabetes, every 6 weeks he gets and injection to both eyes because he has bad vision from his diabetes, he has a distortion in his right eye which was there before he received the COVID vaccine. The caller received the last injection 2 weeks ago. The patient wanted to know if experiencing blurred vision may be related to the COVID-19 vaccine. It was reported that since the day before yesterday the patient has been experiencing blurred vision and cannot read (as reported) the glasses he used to read are no longer useful, this has been a sudden situation. The caller is unable to provide all details for the medications that he takes as his vision is blurry so it is hard for him to see his medication list. He cannot read small letters, it is almost like the letter disappear. Event did not result in emergency room visit or physician office visit.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.