If there is congestion in the eye and there is swelling and pain, it means that there is inflammation in the eye and the inflammation must be brought under control to reduce the swelling. To determine what causes this congestion and edema, it is common to have a bacterial infection or a viral infection. If it is a bacterial infection, you need to use some antibiotic drops or eye ointment and apply hot compresses. After regular treatment, the swelling can be reduced in 6-7 days for acute inflammation. If it is a viral infection, you need to use some anti-viral eye drops or eye ointment for symptomatic treatment. So the main thing to reduce the swelling is to remove the cause of the disease, the cause of the disease removed, the swelling will naturally be slowly eliminated.