i found my duck in the backyard with one eye closed and watery but the other eye was fine. he occasionally opens his watery eye then shuts it again .and my duck was fine a few hours ago and we do have tall long dried grass in our backyard. i’m thinking maybe he poked himself in the eye by the grass. we spotted a rat too, but we’re not sure what happened. please help me. we have no saline solution or any type of eye treatment. should i rinse his eye in water? what do i do!!!????