###Human: Why is there blurred vision after using laptop for long hours? ###Assistant: Hi. If you having blurring of vision in one or both eyes first thing to do is get your eyes checked for refractive error, you might need glasses. And glasses will solve your problem. Other cause of blurring after an excess laptop or digital devices use may be dry eyes. People who sit in front of screens have a greater risk of having dry eyes. In such cases, artificial tears are needed. So, the first thing to do is visit your eye doctor and get your eyes examined for glasses and complete eye examination including the retinal exam.