Many of our friends have glasses, and doctors may recommend dilated lenses in order to get more accurate and realistic eye prescriptions, especially for children, most of whom need dilated lenses, and we are all worried that dilated lenses will harm our eyes. The main purpose of astigmatism is to apply ciliary muscle paralysis drugs to keep the eyes in a state of regulated rest. Depending on the situation, the doctor may choose to use the following medications: atropine eye gel (for slow dilatation) or tropicamide eye drops (for fast dilatation). You may experience some discomfort after applying medication such as photophobia, tearing, difficulty seeing, and the need to wear sunglasses. These are caused by the dilated pupil after the application of the medication. However, the duration of action of these medications is temporary and the duration of action on the pupil is limited. Fast pupil dilating medications are usually produced for 7-8 hours, and chronic pupil dilating medications can be recovered in 2-3 weeks. Therefore, there is generally no harm to the eyes. It is best to follow the advice of a medical professional when you need to do so, and the correct application of dilating medication is not harmful to your eyes.