Digitization is causing many people to spend a lot of time staring at LED screens. The increasing smartphone and tablet usage has been associated with ocular discomfort and visual impairments. Without proper protection from the screen’s harmful effects, prolonged exposure leads to eye strain.
Eye strain develops from tense muscles of the eyelids and other parts of the face. Repeated overuse of these muscles in staring at LED screens or reading books leads to ocular distress and even eye strain.
According to Journal of Modern Optics, lack of sleep, not blinking enough, allergies, incorrect vision prescriptions and exposure to bright light are other factors that lead to eye strain.
The US National Library of Medicine National Institutes of Health stated that the common symptoms associated with eye strain are redness or irritation, difficulty in focusing, dry or watery eyes, blurred or double vision, headaches, increased sensitivity to light and neck, shoulders and back pain.