Very serious sudden onset glaucoma in left eye; tunnel vision; Usually her allergies do not last past 31Mar2021.; The intraocular pressure was up in both eyes at that time; The vision in that left eye is very damaged; the left eye went completely blind; This is a spontaneous report from a contactable consumer or other non-health care professional (patient).  A 79-years-old female patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot number: EN5318) via an unspecified route of administration, administered in left arm, on 12Feb2021 10:30 (at the age of 79 years), as dose 2, single for COVID-19 immunization. Medical history included high blood pressure ongoing (Onset date unknown other diagnosed while she was in her 60s), corneal dystrophy (Chronic condition, probably hereditary) from 2007 and ongoing. Concomitant medication included amlodipine (AMLODIPINE) (2.5mg in the morning and evening daily) taken for hypertension from an unspecified start date (in her 60s as reported) and ongoing; atorvastatin (ATORVASTATIN) (Half of a pill in the morning and at night daily-strength she thinks is maybe 10 or 20mg pills) taken for hypertension from an unspecified start date (in her 60s as reported) and ongoing. Patient previously received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot number: patient reported she thinks maybe EC1283,not sure if 2nd character is L or C, not sure if 3rd character is letter I or number 1, she thinks probably number 1) via an unspecified route of administration, administered in left arm, on 22Jan2021 10:30 (at the age of 79 years), as dose 1, single for COVID-19 immunization and experienced left eye started getting numb, the eyelid and then down her face to the top lip, about 1/3 of the mouth. The patient stated, she had no problems with the second dose of Pfizer COVID-19 Vaccine. The patient stated, about 5 minutes after she was administered the first shot of Pfizer COVID-19 Vaccine as she was sitting in the waiting room waiting for her husband and son her left eye started getting numb, the eyelid and then down her face to the top lip, about 1/3 of the mouth. The patient stated, she had heard about some side effects so really just threw it off as temporary. The patient stated, then after maybe 3-4 hours the symptoms of left eye started getting numb, the eyelid and then down her face to the top lip, about 1/3 of the mouth went away, she felt like she recovered completely. The patient stated, 6 week later she turned up with very serious sudden onset glaucoma in left eye. The patient stated, she does not know if that's linked to the Pfizer COVID-19 Vaccine or not. The patient stated, she might be curious to find out if anyone else has experienced glaucoma with the Pfizer COVID-19 Vaccine. The patient stated, her height shrunk with age. The patient stated, she has been treated for glaucoma. The vision in that left eye is very damaged. The patient stated, she just had a shunt put in her left eye to take care of the extra fluid. The patient stated, she has some more surgery coming up that might help the eye see better. Initial time/date of onset is unknown other than after first dose of Pfizer Covid Vaccine in 2021. This is in part because she normally has allergies that last from December to the end of March yearly. With this event, she had something that was similar to those allergies that she normally gets from grass and weeds, but it was a little different, kind of like her head was head stuffy which lasted past 31Mar2021. The patient stated, usually her allergies do not last past 31Mar2021. Right at the end of Mar yearly the allergies end. The patient stated on 08Apr2021, the left eye went completely blind, she woke up that morning and could only see light from a source but couldn't distinguish what the source was. The patient stated, she thought she might be dreaming so she got up and cut on the light. When she looked in the mirror, she couldn't see her outline or facial features. She has been to 3 specialists. She clarified that unrelated to this event she has another problem that started in 2007 which is corneal dystrophy. The patient stated, so since onset of this event she has seen her regular doctor, her glaucoma doctor, and a corneal surgeon. Regarding outcome of this event, this is unknown-those symptoms with the vision did get better, but when she was able to see the doctor, they did not give her an appointment until 13Apr2021. She was given what seems like it was Prednisone, and the symptoms did improve. The patient reported, but it's kind of gone up and down since then; she just has tunnel vision now. The patient stated, they took her intraocular pressures all along the way. The pressure when the glaucoma was first discovered that it was real high was on 02May2021 when she went to the corneal surgeon; at that time her intraocular pressure of left eye was 56 which the corneal surgeon told patient was a was dire emergency and she should be seen in an emergency room. The intraocular pressure was up in both eyes at that time, but the right eye did not have emergency level pressure, pressure of right eye unknown. The corneal surgeon prescribed all the medications she should take and advised patient to take those medications 3 times in a row that night of 02May2021 which patient did. The patient was seen in the emergency room 02May2021 but was not admitted to the hospital. The patient stated, they tested her intraocular pressures the next morning on 03May2021 and her intraocular pressures had gone down to within normal limits. She stayed on a regimen of 4 different drops until she had surgery on the 27Sep2021. She was not admitted to the hospital at any time. The patient stated, she was only able to provide additional information of as she had just regular blood tests that she usually has with exams. She thinks she had a medical exam on 10Mar2021, and Doctor would have taken whatever blood tests about how the drugs were affecting her then but there were no notable results from that for her to provide. The patient stated, something unknown was a little off which was typically if had cancer, but it was just a tiny bit off, and she has not had a blood test since then so unknown if it was something about the test or just continued. She has no further details regarding testing/investigations or results to provide. The outcome of the events was unknown.