Redness in children’s eyes can be caused by a variety of reasons and the time to get better varies. If it is caused by normal blood vessels in the conjunctival tissue, it will not go away; if it is due to allergy, it can usually subside in about 3 days after treatment; if it is due to infectious factors, it can subside in 1~2 weeks after treatment. There are blood vessels distributed in the conjunctival tissue on the surface of the normal white eyeball, so it will look like a faint red blood, which is completely normal and does not need to be treated or will not subside. Allergic reaction can cause the blood vessels in the conjunctival tissue to dilate and cause redness to worsen, at this time you can point in the eye anti-allergy eye drops treatment, such as Olopatadine hydrochloride eye drops, etc., usually about 2 to 3 days of medication, the redness will gradually subside. Eye infections can also lead to redness aggravated, the need to use anti-infection eye drops treatment, commonly used levofloxacin hydrochloride eye drops, ganciclovir eye drops, etc., general treatment for 1 to 2 weeks, the inflammation subsides, redness will disappear. Children with red bloodshot eyes should seek medical attention, specific medication should be carried out under the guidance of a doctor, in order to promote the condition to recover as soon as possible.