Patients wearing contact lenses cannot see near places, which may be caused by myopia overcorrection, the diameter of contact lenses is too large, and the lenses are contaminated. 1. Myopia overcorrection: If the patient wears contact lenses that do not match the prescription, the patient may experience eye discomfort and blurred vision. If the contact lens prescription is larger than the patient’s actual prescription, because of myopia overcorrection, the patient may experience blurred vision. 2. Diameter is too large: When wearing contact lenses, not only the degree of myopia or hyperopia should be adjusted, but also the diameter of contact lenses should be adjusted. If the diameter of the contact lens is too large, it will cause the lens to be fixed poorly, and the patient will push the lens when turning the eyeball, causing the lens to shift, which will cause the patient to be unable to see the near objects. 3. Contaminated lenses: If contact lenses are worn for too long and not rubbed in time with care solution, the lenses may be contaminated and patients may experience blurred vision. It is recommended that contact lens wearers who experience blurred vision should consult a doctor to evaluate their condition and follow the doctor’s instructions for treatment.