Versions of Iowa Code 135.39D - Vision screening on LawServer 2024 Iowa Code 135.39D – Vision screening 2023 Iowa Code 135.39D – Vision screening 2022 Iowa Code 135.39D – Vision screening 2020 Iowa Code 135.39D – Vision screening 2018 Iowa Code 135.39D – Vision screening 2016 Iowa Code 135.39D – Vision screening 2014 Iowa Code 135.39D – Vision screening.