Adults above 45 are at a higher risk of developing vision problems due to natural aging or eye diseases. The American Academy of Ophthalmology (AAO) estimates that the population that suffers various eye diseases will reach 43 million by 2020. It is overwhelmingly important for older individuals to maintain eye health.

Contact lenses always need careful cleaning and storing. If the wearer has poor health habits, a serious infection named Acanthamoeba may be aroused, which is very difficult to treat. To prevent this bothering infection, contact lenses wearers must follow the codes required by doctors and manufacturers.