Posted on November 19, 2019
What Are Contact Lenses?
Millions and millions of people around the world wear contact lenses, even though you may not know it just by looking at these people. If you are not familiar with contact lenses, let us introduce you to this masquerade, but a common little helper.
What is a contact lens?
Contact lenses are thin, curved lens placed on the tear film covering the surface of your eye. The lens itself is naturally obvious, but are often given a little tinge of color to make them easier for users to handle. You can buy contact lenses from various online sources.
Contact lenses today are either hard or soft. Most people use the latter form right now, but it was not too long ago that contact lenses even blew glass!
A brief history of contact lenses
While contact lenses may appear to be a modern addition to eye care, they actually had a long and illustrious history, kick-started by none other than Leonardo da Vinci and Rene Descartes.
Image Source: Google
Not until the late 19th century, however, that a German glassblower produces lenses that can be seen through and quite tolerable, and optometrists Germany came up with and include the first contact lens, which can be worn for a few hours at a time.
Types of contact lenses
While contact lenses are still the most used for vision correction, there are also contact lenses for the purpose of purely cosmetic and novelty.
Colored contact lenses can improve or completely change the hue of your eyes, and costume contact lenses can help create some special effects that you see on the big screen.
All contact lenses, however, are medical devices regulated by the US FDA. Prescription contact lenses and cosmetic contact lenses all require a prescription.
This is because even common complications such as infection and inflammation can lead to vision loss or blindness.