Disadvantages of colored contact lenses

Color that is used in colored contact lenses, is actually a chemical that can be progressively released and can cause redness of the eye or worse, an allergic reaction. It also reduces the permeability of oxygen and thus leads to reduced corneal nutrition.

When staying in a dark environment, there is a stretch pupils, resulting in the perception of color contact lens ring. They are therefore totally unsuitable for driving in poor visibility. This negative effect is less intrusive when enhancers contact lenses, lens opaque for larger and highly significant for crazy contact lenses.

Colored contacts are not used nearly everyone, because if you have more diopters or astigmatism, it is not available as large as the diopter range in clear contact lenses. It can also play the role of curvature and diameter of your cornea, as well as the production is limited.

It still needs to be noted that colored contact lenses can not override any eye color, and the result is always dependent on your natural eye color. For people who have very dark eyes, colored contacts may not have the desired effect of color change and the result can then act rather comical.

Under normal conditions, the pupil expands depending on the intensity of incident light. When color contact lens is a transparent central portion surrounded by a strong, light, waterproof collar colors. If the pupil is so bound and truncated in the flexibility to adapt to the intensity of incident light.