Today, an estimated 100 million people worldwide wear contact lenses. These items are very popular and technology is improving them on a daily basis, making them more attractive.
Why do people wear contact lenses?
There are people who wear contact lenses instead of glasses for cosmetic reasons. They like each other better wearing contact lenses than wearing glasses. Another reason people wear contact lenses is cosmetics. There are many types of decorative contact lenses that can change the appearance of the eye. And there are those who appreciate their convenience. They can't do some sports with glasses; they use devices that are not compatible with glasses etc. There are people who are forced to wear contact lenses for medical reasons. In their case, contact lenses are not an option. Contact lenses can be a bandage aid in the healing process of various diseases or injuries of the cornea and it is a luxury means of healing. There's also a combination of the two - remedial tinted lenses really appeal to a lot of people.
The first contact lenses ever produced were developed using glass. Later, new types appeared, such as Plexiglas and rigid gas permeable types, but today soft contact lenses are the most common. Modern materials include silicon hydrogel or other plastic polymers such as etalficon A, galyficon A, senofilcon A (used in the manufacture of Acuvue contact lenses). Rigid gas permeable contact lenses are recommended for people with dry eyes because they do not contain water that can evaporate during wearing.
If you decide to wear contact lenses, you must first consult an ophthalmologist, regardless of your reasons. Your doctor will decide what type of contact lens is best for your eyes. Various factors will be taken into account when prescribing a certain type of contact lens:
material (silicone hydrogel is one of the latest discoveries in this field), wear time (daily wear, long time wear or continuous wear), shape (spherical, toroidal or multifocal) ), etc. Depending on the material, contact lenses can be hard or soft. Rigid substances can be airtight or gas-permeable, but plastics are always gas-permeable. There may also be another classification based on humidity, in terms of the amount of water in contact lenses.
The wearing time
Daily contact lenses are safer because the risk of infection is lower than long-term contact lenses. This type does not need to be cleaned, disposable. It is sterile. And it even saves you money on cleaning solutions or maintenance. Long-lasting contact lenses, on the other hand, allow people to easily wear contact lenses for longer periods of time while allowing for oxidation (they often have a high rate of oxygen permeation). Some people prefer them because their convenience is obvious, but the risk of infection is higher than with daily contact lenses due to bacterial stagnation, dust accumulation, etc.
One of the most popular contact lens brands in the world is Acuvue, manufactured by the Vistakon Company, a subsidiary of Johnson & Johnson. They offer both visual and cosmetic contact lenses. They design disposable lenses, making ones that need to be replaced every two weeks (Acuvue, Acuvue 2, Acuvue 2 Colors, Acuvue Advanced and Acuvue Oasys) or less (Acuvue 1 day). They have also started making extended wearable lenses.
Places to buy them?
The quality of contact lenses is very important. Poor quality contact lenses can damage the eyes, irritate or damage the eyelids or cornea. Care needs to be taken about how to wear, care for, and clean lenses because, while they are of good quality, they also carry different risks. Therefore, contact lenses should be purchased in specialized stores after consulting a doctor. These items can be found everywhere because contact lenses are so common. Another trend is to buy them from an online store. This method can be even cheaper and still give the same quality. You just need a prescription. But be careful and choose only reputable stores. Your health is at stake.
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