According to different eye conditions such as light sensitivity, it takes varying periods to adjust to contact lenses. In general, rigid gas permeable contacts require more time for adaption than soft ones. Most contacts in different materials need daily care, while daily disposable contact lenses and some extended wear contacts can be discarded on removal.

With tricky prescription and fitting, bifocal or multifocal contact lenses have been created to offer both close up and distance vision. These multifunctional contact lenses also require an adaption period as long as six weeks, during which night glare, shadows and haziness may occur. Multifocal contact lenses can still be customized to provide clearer distance vision or near vision, according to personal needs. Currently, trifocal lenses are also available.

You may wonder that how the special effects in Halloween, theatrical use, novelties and movies can be achieved. In fact, they come from variations of color contact lenses, named special-effect contacts including gothic contact lenses and crazy lenses. Special-effect lenses are made of opaque colors that can either enhance your costume color or provide an drastic eye color change if your natural eye color is light or dark. Gothic contact lenses are available in both prescription and non-prescription types, as well as custom type. They are particularly designed to create special effects in novelties, theatrical productions, as well as for Halloween enjoyment. Special-effect lenses can even be hand painted to suit personal needs. Other crazy lenses may make your entire eyes black and mask your natural color. Most of the special-effect lenses cost as much as traditional color contacts, while hand-painted designs require a much higher fee. Some of these lenses may be covered by vision insurance plans. A widely accepted theatrical contact lenses brand is Wild Eyes from CIBA Vision, including “red hot” and “black-out” style gothic contacts.

Currently, gas permeable contact lenses are also available in high-index materials, which have long been used only for eyeglass lenses. Using high-index materials, Paragon Vision Sciences published its HDS HI 1.54 GP lenses, which are more comfortable and allow more oxygen to reach the cornea. People with heavy prescription can benefit more from this new lens design, because contacts made of high-index materials are thinner than conventional GP lenses.

Most of the patients who received laser vision correction surgeries such as LASIK and PRK get a perfect vision recovery. However, a small portion of patients may suffer from glare, halos and starbursts as well as irregular astigmatism after these surgeries, due to the different ways that the patients’ corneas respond to laser energy. Their daily life quality may further be deteriorated by side effects such as eyestrain, headache. What’s worse, a second surgery for enhancement may be impossible. In this case, GP lenses or hybrid contacts are the solutions for sharper vision.

For most adults with eyes problems such as farsightedness, nearsightedness or astigmatism, contact lenses are the best choice during sports. Contact lenses can provide better vision and unobstructed field of view, because they are non-frame and contact with ocular ball directly. Besides, keeping clean and clear is another advantage of contact lenses. Contact lenses are more safety and more stable than eyeglasses. Compared to other kinds of contact lenses, daily disposable contact lenses are more convenient that wearers don’t have to worry about their storage and care.

Currently, contact lenses are provided by various sources, because prescription has been an independent medical service. With your prescription, customers can buy contacts from ECPs, optical stores, warehouse clubs, and online stores and so on. The overall value of lens deserves the top consideration, which includes availability, customer service, convenience, bundled products, professional services and price.

GP lenses have a disadvantage that they may cause eye irritation, after a gust of wind containing dust and other airborne materials. In fact, GP lenses are smaller than the cornea and float on the tears. In contrast, soft lenses cover more part of the cornea and are less likely to cause this problem. Some contact wearers need a plunger to remove their lenses, although the most convenient way is to use fingers.

For convenience and a wider filed of view, more and more people choose contact lenses instead of eyeglasses. The 2007 Contact Lenses in Pediatrics (CLIP) study showed that 169 teenagers and children age 8 to 12 who have worn contacts for three months felt more confident and performed activities better than before. During sports, they don’t have to worry about glasses’ getting knocked off or fogging up. Though contacts are getting more and more popular, there are still lots of things you should be aware.

Astigmatism can be caused by either hereditary or environmental reasons. While some forms of astigmatism are not explainable, most types are clear. People who move eyes in a single direction a lot, those with lower socio-economic status, poor diet are more likely to get astigmatism.