Asthenopia, better known as eye strain, which is an ophthalmological condition that manifests itself through fatigue, pain in or around the eyes, blurred vision, headache and occasional double vision. Generally speaking, eye strain occurs when you reading too much, watching TV in a long time and playing computer constantly. If you are concentrating on a visually intense task, such as continuously focusing on a book or computer monitor, the ciliary muscle tightens. Obviously, watching TV constantly will cause eye strain. You can apply cucumber slices on eyes, or drink some tea and take a good rest, or drop some basic drops into eyes if you feel eye strain. In addition, you also can take vitamins supplements through eating apples, tomatoes, oranges and so on. Eye strain is one of basic eye problems, so pay attention to eyes and keep eye health.