There are many causes of eye congestion, and each cause of eye congestion has a different self-healing time. Common factors include eye fatigue, injury, bacterial keratitis, acute conjunctivitis, acute glaucoma, etc., and not all of them may be able to heal on their own. It needs to be analyzed specifically. 1. Eye fatigue: patients with eye fatigue, under the premise of reducing the time of eye use, scientific medication, and ensuring sufficient sleep, the self-healing time is generally about 2 to 3 weeks. 2. Injury: If the eye is bruised, it may cause local congestion, which can be relieved by hot compresses, and can be healed in 3 to 4 weeks. Severe cases need to use ofloxacin eye drops and other drugs with treatment, may need more than 1 month. 3. Bacterial keratitis: These patients may have tearing and photophobia, and will not heal on their own. Cefazolin and other drugs can be used to treat, it will take about 2 weeks to recover. 4. Acute conjunctivitis: patients may have increased secretions, conjunctival congestion and other phenomena, will not heal by itself, need to use tobramycin eye drops, levofloxacin eye drops and other treatments, it will take about 2 weeks to heal. 5. Acute glaucoma: this kind of patients due to the rise in intraocular pressure, will lead to eye congestion, due to the need to lower the pressure treatment, the treatment time can not be fixed. As many causes can lead to eye congestion, so the recovery time is also different, it is recommended that patients consult the doctor in a timely manner, and strictly comply with the doctor’s instructions for treatment.