Impact of Prolonged Digital Screen Exposure on Visual Health in Adults

The extensive use of digital devices has markedly heightened screen exposure among people, prompting concerns about its effects on visual health. Extended utilization of computers, smartphones, and other digital screens has been linked to various visual and ocular symptoms together referred to as Digital Eye Strain (DES) or Computer Vision Syndrome (CVS). This research seeks to analyze the impact of extended digital screen exposure on adult visual health by integrating existing scientific literature about underlying mechanisms, clinical symptoms, risk factors, and preventive measures. A narrative review of ophthalmic, optometric, and occupational health research was performed to assess the correlation between digital screen usage and visual discomfort. The results demonstrate that prolonged screen exposure leads to symptoms like ocular tiredness, xerophthalmia, visual blurriness, cephalalgia, and photophobia. The symptoms generally stem from diminished blink frequency, tear film instability, accommodative and vergence strain, and inadequate visual ergonomics. Adults are especially vulnerable due to prolonged work exposure, age-related alterations in tear film quality, and the significant incidence of uncorrected refractive defects. The review emphasizes that digital eye strain is predominantly preventable and controlled by evidence-based strategies, such as ergonomic adjustments, regular visual breaks, suitable optical correction, and preservation of ocular surface health. Nonetheless, deficiencies persist in comprehending the long-term consequences of prolonged digital screen usage, underscoring the necessity for longitudinal and impartial research methodologies. Mitigating digital eye strain is crucial for enhancing visual comfort, occupational efficiency, and general quality of life in a more digital adult demographic.