Although staring at computer screens, smartphones, video games or other digital devices for long periods of time won’t cause permanent eye damage, beware: your eyes can feel dry and tired. Some people experience headaches or motion sickness when watching 3D movies, suggesting problems with focus or depth perception. Why do you think computer users suffer from eye strain? Under normal circumstances, the average blink is about 18 times per minute, but research suggests that whether we are working or playing, the number of blinks is halved when we use a computer or other digital device. Long periods of reading, writing, or other focused close work can lead to eye strain. What can I do about eye strain? 1. Keep 25 inches (about 63 cm) from the screen and adjust the screen to a slightly overhead position; 2. Reduce screen glare by brightening the area, or wear goggles if needed; 3. to remind yourself to blink; 4, “20-20-20” rule: every 20 minutes to look 20 feet (about 6 meters) outside at least 20 seconds; 5, dry eyes to the eyes to a little artificial tears to moisten a little; 6, to ensure that the regular computer work and rest, as far as possible to ensure sufficient sleep. Computer control eye fatigue aggravated for what? 1, lack of sleep: when the lack of sleep, you may feel eye pain. Because during sleep, the eyes can rest for a long time and get a supply of nutrients. Persistent eye pain can lead to swelling and infection, which can be more pronounced if you wear contact lenses. If you need to use the computer to complete a marathon task, if possible, remember to take a regular break or nap; use a towel soaked in warm water to dry eyes to a hot compress; if you feel dry eyes, fatigue, you will stop working to take a nap or squint. 2, improper use of contact lenses: for wearing contact lenses, especially the need to often use computers or other digital devices partners, must be the correct use, clean contact lenses, because the correct operation to help avoid eye pain, swelling, infection and vision problems. Allow your eyes to breathe: wear frames for a while; avoid sleeping with your contacts, even though they are advertised for long periods of time; and use a good cleaning solution. Here are a few tips to keep in mind when cleaning your contact lenses: 1. Avoid contact with water and use a new solution to clean and preserve your lenses each time; 2. Always scrub when cleaning your contact lenses, even if it is a non-wiping care solution; 3. Clean your preservation case regularly with a new solution and replace it every 2 to 3 months. 4 If there is any eye redness, blurred vision, tearing, photophobia or pain, swelling or discharge, stop wearing contact lenses and seek medical attention as soon as possible.