diagnosed with a stroke in the retina; In the beginning the patient could only see black but now he can see.; This is a spontaneous report from a contactable consumer or other non-health care professional. A 42-year-old male patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot number and expiration date unknown) via an unspecified route of administration on an unspecified date in May2021 (at the age of 42-year-old) as dose 2, single for covid-19 immunisation. Medical history included problem with the heart valve (diagnosed when the patient was in his 30s) and blood pressure medicine, after his heart operation on an unspecified date. Concomitant medications included blood pressure medicine, after his heart operation. Historical vaccine included as patient previously received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot number and expiration date unknown) via an unspecified route of administration on an unspecified date in Apr2021 (at the age of 42-year-old) at dose 1, single for covid-19 immunisation and experienced with tired after the first dose, this started a few hours after he got the vaccine and the next day. The patient rested for the day and then was fine. After second dose of Pfizer vaccine, in last week of June on 29Jun2021 patient experienced with stroke in the retina an emboli went into the retina and caused a stroke there. They looked coagulation factors on the patient, he already has pre-existing issues in the heart with one of his valves. On an unspecified date the patient experienced in the beginning the patient could only see black but now he can see. The event diagnosed with a stroke in the retina was reported as serious with seriousness hospitalization. The patient was hospitalized with a stroke in the retina (cerebrovascular accident) from 01Jul2021 to 02Jul2021. The patient was in the hospitalized for 2-3 nights. Reporter spoke with some doctors who have confirmed retina stroke has been reported with covid-19 vaccines. They have seen some cases. Reporter doesn't know if these cases are associated with the Pfizer COVID-19 vaccine or not. Investigation Assessment was provided. Lab tests included with CT scan, an MRI of the brain and everything that needed to be done on HTE patient while in the hospital. Therapeutic measures given as the patient was started on blood thinners. The reporter sent the imaging of the heart and the eye to her colleagues who were retinologist and a cardiologist. Caller was a scientist. The caller's colleagues asked if the patient got the vaccine and he did about 2 months, prior to this event but patient was never sick. Investigation provided as follows: The patient had an imaging done in the hospital. MRI of the brain was clean, a CT of the patient's carotid which was clean, blood tests, imaging of the eye which showed a stroke in the retina, and a TEE of the heart which showed what was happening in the valve. The lipid and coagulation factor were normal on the patient's blood work. Outcome of the events in the beginning the patient could only see black but now he can see was unknown and diagnosed with a stroke in the retina was resolving.