If a patient experiences redness in the eyes after wearing contact lenses, the exact recovery time depends on the patient’s condition. If it is a simple conjunctival infection, the recovery time may be relatively short, with a full return to normal in about 1 week. If the infection is in the cornea, it may take up to 2 weeks or more for the patient to recover. Contact lenses come into direct contact with the conjunctiva and cornea of the eye, so if a patient is not hygienic in the use of contact lenses, it can lead to inflammatory eye infections, most commonly conjunctivitis or even keratitis. If it is a simple conjunctivitis, it is usually treated with topical medication and can be completely cured in 1 week. However, if the patient is suffering from keratitis, the treatment will take longer, even 2-3 weeks in some cases. Therefore, if the redness of the eyes returns to normal after wearing contact lenses, the time will depend on the patient’s specific condition.