Keep the room you are in softly lit. Fluorescent lighting is considered bad for eyes since they give off the wrong light frequencies of color and emit radiation that makes you drowsy all day long.  When reading, try to keep your light source located behind you and keep the light directed on the paper or the task you are working on. At work, or at a desk, use a shaded light source positioned on the desk in front of you. Again, keep the light directed towards your work and the shade will protect your eyes from direct light from the source. Avoid watching television or working on the computer in the dark. Dry eye is caused by a lack of lubrication and moisture on the surface of your eye. Problems can range from minor irritant to serious inflammation of the tissues of the eye.  Use a humidifier to moisturize your house or workspace. Adjust your thermostat to reduce air flow and dust particles that might irritate your eyes. Move your desk or office space if it is near a vent. Request moving to a different area of the office. Quit smoking because it can inflame your eyes. Consider stopping if you develop a dry eye condition. Use artificial tears if necessary to keep your eyes moist and lubricated. Invest in the correct glasses or contact lenses for your specific situation. Nowadays, eyewear is made for nearly every situation so make sure to get a proper eye exam and talk to your optometrist about getting the correct prescription for the most likely environment where you will be wearing your glasses.  Prescription and nonprescription lenses are made for nearly all types of lifestyles. There are different types of lenses for age, sports, and indoor and outdoor wear. If you work outside or have to drive long distances make sure to buy polarizing sunglasses to protect your eyes again UV light and glare. This will help prevent squinting. Make sure you wear glasses for as long as you need to and keep them clean. Computers are a major source of eye strain for most people. Try to limit your screen time by routinely taking...

TL;DR in Vietnamese:
Điều chỉnh ánh sáng. Cải thiện chất lượng không khí. Chọn đúng kính mắt. Hạn chế sử dụng máy vi tính.