vision decreased; this spontaneous report received from a consumer by a regulatory authority (it-minisal02-846615) on 28-feb-2022 concerned a 60 year old female. the patient's weight was 58 kilograms, and height was 160 centimeters. no past medical history or concurrent conditions were reported. the patient received covid-19 vaccine ad26.cov2.s (suspension for injection, intramuscular, batch number: xd974 expiry: unknown) 1 dosage forms, 1 total, administered on 20-sep-2021 for vaccination. no concomitant medications were reported. on 20-sep-2021, the patient experienced vision decreased (worsening of day and night vision od(most probably meaning right eye from 'oculus dextrus') already suffering from retinal pathology photophobia). the action taken with covid-19 vaccine ad26.cov2.s was not applicable. the patient had not recovered from vision decreased. this report was serious (disability or permanent damage).; reporter's comments: glaucoma; already suffering from retinal pathology photophobia