Tehran University of Medical Sciences Journal of Modern Rehabilitation 2538-385X 0 - 2025 11 22 1331 1331 Mehrdad Sadeghi Department of Optometry, School of rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran Saeed Rahmani Department of Optometry, School of rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mohammad Ghasemi Brumand Department of Optometry, School of rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran Parvin Dibajnia Department of Optometry, School of rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran 2025 04 23 2025 11 22 Blue light blocking filters are recognized as important tools for reducing the harmful effects of light emitted from digital screens. This narrative review, based on a comprehensive search of databases including PubMed, Web of Science, Cochrane, Medline, Scopus, Google Scholar, and ScienceDirect, examines studies published between 2010 and 2024 and evaluates the effects of these filters on eye health, sleep quality, and related functions. Findings indicate that the use of these filters can help reduce visual discomfort and improve individual factors such as circadian rhythm and sleep quality. Moreover, the relationship between blue light blocking filters and the reduction of sleep disorders such as insomnia, anxiety, migraines, photophobia, mania, computer vision syndrome, and accommodative problems has been investigated. The effects of these filters on retinal structure and function, their potential to reduce the risk of age-related macular degeneration (ARMD), and their influence on contrast sensitivity, color perception, and motion detection have also been discussed. Some studies suggest that these filters may affect contrast sensitivity; however, further research is needed to clarify these effects. The use of these filters is recommended for individuals who are continuously exposed to digital devices. Although these lenses do not significantly impact overall color perception, they may cause difficulties in distinguishing colors, particularly within the blue spectrum. This study, as a narrative review, provides a comprehensive overview of the effects of blue light blocking filters and emphasizes the need for further research in this area. https://jmr.tums.ac.ir/index.php/jmr/article/view/1331