6. Allergies
allergies can be caused by things like pollen, which tends to flare-up only at certain times or seasons. It can also be due to medications, ingredients or foods.
A blurred vision is one of the most common symptoms that occur during allergy episodes or attacks. Blurred vision can be accompanied by other symptoms such as a rash on the skin, itching, a fever, difficulty breathing or swallowing, and an excess of phlegm.
Allergy reactions can be mild but dangerous if not treated in time. You should consult an allergist if you suspect you may have allergies. Always keep the appropriate medication on hand to treat an allergic reaction.