1. Gunarhadi, G., Sunardi, S.: Role of parents to train the independence of students with visual impairment in activity of daily living skill. Int. J. Multicultural Multireligious Underst. 6(1), 83 (2019). https://doi.org/10.18415/ijmmu.v6i1.501, https://www.researchgate.net/publication/332882530
2. Kizilaslan, A.: Teaching Students with Visual Impairment. Nova Science Publisher (2020). ISBN: 978-1-53617-166-2, https://www.researchgate.net/publication/341000567_Teaching_students_with_visual_impairment
3. Zajac, M.: Vision screening in school children in Strzelin County. In: 15th Czech-Polish-Slovak Conference on Wave and Quantum Aspects of Contemporary OpticsVolume: SPIE Proceedings, vol. 6609, pp. 2–4 (2006). https://www.researchgate.net/publication/232251648_Vision_screening_in_school_children_in_Strzelin_County
4. Knapik, J., Miśkowiak, B.: Screening investigations of vision process in the students of Karol Marcinkowski Medical Academy in Poznan, Polish, Nowiny Lekarskie, pp. 142–147 (2005)
5. Aral, N., Saglam, M.: Perception Development In Infants, Current Advances in Education, 1st edn., pp. 260–262 (2016). https://www.eqar.eu/qa-results/search/by-institution/institution/?id=1968