Błędnie: This moving film tells about a difficult relationship of a young woman and an actor who becomes a blinder. Poprawnie: This moving film tells about a difficult relationship of a young woman and an actor who becomes blind.
"Blinder" to 'klapki na oczach', 'okulary końskie'. "Blind" to przymiotnik ('ślepy, niewidomy'). 'Ślepiec' to po angielsku "blind man", "blind person".