Blurred vision can occur in children and adolescents with refractive errors, age-related cataracts, and many other conditions. There are many reasons for eye blurring, the most common in children and adolescents is refractive errors such as myopia and astigmatism, due to the mismatch between the refractive system, the length of the eye axis, and other factors such as regulation, resulting in the image can not be clearly presented in the retina, which leads to decreased visual acuity, blurred vision, and blurring of the eyes, and so on. And the elderly due to age caused by cataract lens clouding, or regulation function decline and other conditions can also make see things flower, these conditions need to carry out cataract surgery or wear presbyopia can only be relieved after the glasses. Specific causes of blurred eyes are more, if a short break or sudden vision loss can not be relieved or seriously affect the normal work and life, you need to consult a doctor as soon as possible to be the cause of the symptomatic treatment.