Patients with eye fatigue, blurred vision, foggy feeling, may be a transient symptom caused by excessive eye use, or may be caused by pathological factors such as refractive error, cataract, fundus lesions. 1. Excessive use of eyes: If patients read for a long time, use of electronic products, etc., resulting in excessive use of eyes, patients because of eye fatigue, there will be blurred vision, foggy feeling and other symptoms, patients relax the eyes, general discomfort can be relieved. 2. Pathological factors (1) Refractive error: when patients suffer from astigmatism, hyperopia, myopia and other refractive errors, the light refracted by the eye, the focus can not be accurately converged on the retina, which can cause eye fatigue, blurred vision and foggy feeling. (2) Cataract: The clouding of the lens in cataract patients will prevent light from reaching the inside of the eye, resulting in blurred vision and a foggy feeling. (3) Fundus lesions: Patients with fundus lesions such as macular degeneration and macular precursor membrane may also experience blurred and foggy vision. It is recommended that patients with blurred vision, visual fatigue and other discomfort symptoms that do not resolve over time should consult a doctor promptly to assess their condition and follow the doctor’s instructions for treatment.