Old eye droppings may be caused by physiological factors, conjunctivitis, dacryoadenitis, dry eye and other factors. 1. Physiological factors: For example, if the weather is dry and you drink too little water, you may often have eye droppings, but without other clinical symptoms, it is a normal physiological phenomenon and you don’t need to worry too much. 2. Conjunctivitis: frequent rubbing of the eyes with dirty hands may cause conjunctivitis, which leads to eye congestion, and then frequent eye droppings, which may be accompanied by symptoms such as a foreign body sensation in the eyes, photophobia, and tearing. 3. Dacryoadenitis: Usually associated with pathogen infection, it can lead to frequent appearance of eye droppings in the eye area, and is accompanied by symptoms such as redness, pain and swelling. 4. Dry eye: it may be related to overuse of eyes and environmental factors, which may cause foreign body sensation in the eyes as well as eye droppings, and may be accompanied by symptoms such as dry eyes and transient blurred vision. If there is always bogey in the eyes and other abnormal symptoms, it is recommended to consult a doctor for examination and treatment in time to avoid adverse effects.