Plaquenil only rarely affects the eyes. If it's prescribed, the patient is advised to have a particular eye test every year, or more often if they feel there is some reason for increased risk (like your sister). By having the eyes checked often, it is very easy to determine if you are having this relatively rare response, and they eyes will go back to normal as plaquenil usage is suspended.
Lynnwood, Lupus & Sjogren's ModeratorDIAGNOSING-LUPUS & LUPUS-RESOURCES
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