1. be deprived of understanding, judgement or perception
blinded by faith/data
To be 'blinded by' something is to be distracted by it so as not to be able to objectively see the full picture or true facts. If you are 'blinded by faith', for example, it means your judgement is skewed by your beliefs: "I was so blinded by love I didn't know what a horrible person he was." To blind someone 'with' something is to participate in the process of bombarding them with a huge amount or volume of something: "He blinded me with facts." Both are common phrases used in social and professional contexts.