Eye drops that decrease the pupil can be used to treat dilated pupils. Sunglasses with anti-reflective coatings may reduce glare from sunbursts and improve night vision. To decrease the brightness of starbursts at night, special contact lenses may be required. Contact lens wearers who experience blurry or distorted vision may have worn their lenses too long without replacement. Wearing contacts all day every day for several years can cause serious eye problems if they are not replaced periodically. Contact lenses should be changed at least once per year. If your lenses become dry or dirty, they should be cleaned before being put back in the case. If you wear glasses or contacts, make sure that you take care of them. It is important to replace glasses when they begin to show signs of damage or wear out. Even though you may be able to see better with older glasses, it is recommended to get new ones so that you do not risk further injury to your eyes. Contacts should also be changed regularly; however, many people wait until they feel a pain around their eye to visit a doctor. This could be too late if a contact has been on the eye too long or damaged by moisture from tears and mucus. Be sure to change your contacts at least twice a year. Glare from sunlight or artificial lights at night can cause visual problems for those who work at computers or use other electronic devices.