Cold compresses are usually better for allergic conjunctivitis because allergic conjunctivitis is caused by an allergic reaction that leads to itchy eyes and congestion. If the itching is severe, the use of cold compresses will help to relieve the symptoms and control the symptoms. In addition to cold compresses, anti-allergy medication is recommended, usually Olopatadine or Imodium eye drops are used to control allergies. If the allergic reaction is heavy, you can also use hormonal eye drops, such as Flomipron or Dimethoate, which will work faster. However, hormonal eye drops are not recommended for long-term use. It is generally safer to switch to Olopatadine drops after 1-2 weeks of symptom control. If the symptoms are heavy during the period, cold compresses can be used to help relieve the symptoms.