Colored contact lenses work by using a layer of pigments or dyes to change the color of the iris, the colored part of the eye. The iris is made up of a series of muscle fibers that control the size of the pupil, which regulates the amount of light that enters the eye. The amount of melanin in the iris determines the natural color of the eyes, ranging from shades of brown to blue or green.
Colored contact lenses can be made with either a translucent or opaque tint. Translucent lenses enhance the natural color of the eyes by adding depth and dimension, while opaque lenses completely change the color of the eyes. Some lenses have a combination of both translucent and opaque tints to create a more natural-looking effect.
Colored contacts come in a range of designs, from solid colors to patterns and blends. They are made from a variety of materials, including soft silicone hydrogel and rigid gas-permeable (RGP) materials, and can be prescribed by an optometrist or purchased as cosmetic lenses without a prescription. Colored contact lenses are available from multiple manufacturers.
Like all other contact lenses, it's important to follow proper cleaning and wearing instructions to ensure the lenses remain safe and comfortable to wear.