Yes blindness can be temporally and/or permanent and usually through Bilateral Uveitis. What are sarcoidosis eye symptoms though? its a question that seems to be brought up quite a bit, here is information on eye problems brought on by sarcoid including blindness. Hoping this straight forward explanation helps those who certainly – like me – do not like too much technical terms within many organisations explanations!
This is the link; What is Bilateral Uveitis?