PersonRepository.php

 if (sizeof($eyeColours) == 1) {
            $queryBuilder->where("e.name = ?0");
        } else {

            /***
            foreach ($eyeColours as $key => $value) {
            }
            ***/

            $queryBuilder->where($queryBuilder->expr()->orX(
                $queryBuilder->expr()->eq("e.name", "?0"),
                $queryBuilder->expr()->eq("e.name", "?1")
            ));
        };