The phenomenon of tired eyes after fever may be caused by viral or bacterial systemic poisoning symptoms, or may be caused by drug factors or conjunctivitis and other factors. 1. Viral or bacterial symptoms of systemic poisoning: fever is mostly caused by viral or bacterial infections, so that the body has systemic poisoning symptoms such as fever, headache, general muscle pain, eye swelling and pain and other symptoms, so the patient’s eyes will feel tired. 2. Drug factors: because the body takes some drugs containing sedative dormant ingredients, which appears in the eyes feel very tired, sleepy phenomenon, such as aminocarbamate capsules. 3. Conjunctivitis: due to viral colds and fever symptoms, it can also violate the conjunctiva and conjunctivitis occurs, which is manifested in increased conjunctival secretion and accompanied by symptoms of eye pain, so the patient can appear in the eyes feel very tired performance. It is recommended that patients with ocular discomfort consult a doctor to evaluate their condition and follow the doctor’s instructions for treatment.