Usually the causes of burning eyes are temperiory and easily treated, in other times, burning eyes are symptomatic that need diagnosing and treating by an ophthalmologist. Eyestrain, irritants and conjunctives are the reasons for burning eyes. Anybody who reads a book for a long time or stares at the computer screen for long is surely to experience the burning eyes, maybe headaches at the same time.Besides, prolonged exposure to the sun, glare from snow or water, irritation form exposure to chemicals such as soaps, makeup, and shampoos, trauma to the eyes, wearing contacts are also the possible cause for burning eyes. Being overtired may cause burning eyes as well, because our eyes are especially delicate ans sensitive, it does not take much to irritate them.