Toric contact lenses for astigmatism correction are available from various brands, with specific materials, designs and features. In general, toric lenses are designed to maintain stable on the cornea. However, a small portion of toric lens wearers may experience lens rotation, which is surely to affect vision quality. In this case, these individuals should see a contact lens specialist to search out the underlying cause.

People in mid-ages are more active than their counterparts several decades ago. A large number of people above 40 still participate in biking, jogging, exercising and playing sports regularly. Presbyopia is quite common among people above 40, so that multifocal lenses are needed. But for these active sports, multifocal eyeglasses are inconvenient.

A recent study involving children age 8 to 17 shows that more than half of these children are interested in contact lenses, a third of whose parents are not reluctant to consider contacts for their kids. There are also 40% of children who dislike wearing noticeable eyeglasses. Parents’ concerns are associated with lens care. Eyeglasses are easier for daily care but contact lenses require more complex lens care. Those parents think that their kids are too young to take good care of contact lenses. In fact, there are other researches reporting that most children are capable of caring for soft contact lenses.

Usually caused by allergies and dry eye syndrome, chronic red, bloodshot eye is a common symptom among contacts wearers. These people should visit an eye doctor to get a proper exam and receive appropriate treatment. Another problem is that the eyes may weaken even after a long period of lens wear and stable vision. This change in prescription can be caused by curvature change from either GP lenses or soft lenses.

Conventional hydrogel soft contact lenses can transmit only a limited amount of oxygen to the eyes so that their extended wearing period is also limited to only seven days. The invention of silicone hydrogel contacts changes this situation forever. Its material silicone lets six to seven times more oxygen to reach the eyes and the continuous wearing period is been extended into 30 days. These super-permeable contact lenses have a share of 60% in the soft contacts market.

Rigid gas permeable contact lenses feature sharper vision, longer replacement interval, and more deposit resistance. Even with these advantages, RGPs still need regular cleaning and replacement as your doctor demands.

Colored contact lenses are available in toric, bifocal and disposable types. Actually, colored contacts use three types of tints: visibility tint, enhancement tint and color tint. Light blue or green visibility tints are used to make contacts more apparent while you putting them on or removing them off. Unlike a visibility tint, an enhancement tint intensifies your eye color slightly using darker colors. They are solid and meet the need for some people. Color tints are favored by people with dark eyes but want to change their eye color. These deep colors used include hazel, green, blue, violet and grey. Costume or theatrical contacts belong to this type, which always create special effects in novelties and movies by changing the people’s natural eye color. For all these three tint types, natural appearance is the most important code. Some manufacturers even make tiny colored dots on lens without affecting the lens center.

Contact lenses are not always comfortable for every one. In fact, about a half of contacts wearers have ever suffered from discomfort, so that they may discard them forever. Discomfort of contact lenses may happen when your eyes do not feel well, look good, see well, or just have a minor irritation. You should always visit your doctor and never be afraid to tell him your eye problems. Otherwise, these discomforts may lead to more serious vision problems.

As their name suggests, prosthetic contact lenses are created to decorate disfigured eyes. They either mask eye flaws by trauma and eye diseases or block excess light for abnormally functioning eyes. Prosthetic contacts can provide a healthy eye appearance using custom-painted colors. They have no special difference in materials and care methods with regular contact lenses.

Contact lenses provide fashion expression and a complete vision field suitable for sports without apparent eyeglasses, and eliminate the need for irreversible refractive surgery. Among vision correction ways for myopia, hyperopia and astigmatism, contact lenses have gained a 20% share in US. Today, contact lenses are available for everybody with many more options, even if some people were deprived by technology limitations.