CVS occurs from prolonged computer use causing eye muscle strain. Symptoms include headaches, blurred vision, neck pain, and eye strain. Improper lighting and air movement can worsen symptoms. About 90% of computer users experience CVS after 3+ hours daily
Eye strain is a symptom of eye fatigue from prolonged visual tasks. Medical term is asthenopia, caused by concentrated eye use. Common causes include computer use, dim light, and excessive brightness. Some people may have no symptoms at all
Eyes work for nearly 16 hours daily, requiring at least 8 hours of rest. Eye muscles contract when looking up-close, relaxing after near vision use. Regular eye exercises help maintain vision and prevent certain conditions
Monitor refresh rate measures how many times per second the screen updates. Higher refresh rates provide smoother visuals and reduced motion blur
Free online tool for testing screens completely black. Offers black screen images and wallpapers in resolutions from 480px to 4320p. Allows checking for dead pixels, backlight bleeding, and contrast issues
Hyperopia causes blurry near vision due to improper focusing. Myopia leads to blurry distant vision from refractive errors. Astigmatism creates blurry vision at all distances. Presbyopia affects near vision after age 40. Cataracts cause cloudy vision and night halos