Blurred vision in the right eye may be caused by refractive error, right eye keratitis, cataract and other reasons. 1. Refractive error: Blurred vision in the right eye may be caused by refractive error, such as myopia, hyperopia or astigmatism, which is more common in adolescents. Patients can go to the ophthalmology department to measure the visual acuity and wear glasses or have refractive surgery to correct it. 2. Keratitis of the right eye: blurred eyes in the right eye may be caused by keratitis of the right eye, patients may also be accompanied by pain, photophobia, tearing, obvious vision loss and other manifestations. 3. Cataracts: Blurred vision in the right eye may also be caused by cataracts, which may cause blurred vision, photophobia, dark or yellow color of objects, etc. This disease is more common in the elderly. The right eye blurring can not see clearly, it is recommended that patients go to the hospital ophthalmology to do timely examination, clear cause of the disease and follow the doctor’s instructions for treatment, to avoid delaying the condition of the adverse consequences.