Many contact lens wearers have accidentally fallen asleep with the lenses in place, resulting in sticky, sore and dry eyes in the morning. Extended wear contact lenses are now available, which eliminate the risks for many who want to sleep in...
When small details and fine print become difficult to read or when a person has to hold printing at arm's length to read, he probably needs bifocals. Presbyopia is a condition that affects people beginning around the age of 40 and is corrected by...
A contact lens is a thin piece composed of various plastics placed directly over your pupil to correct nearsightedness, farsightedness or astigmatism. There are many different types of contacts, including Toric (for astigmatism), bifocal (for...
Contact lenses rest on the cornea, the curved membrane that covers the iris, the colored section of the eye, and the pupil. Because the cornea sometimes becomes dry, contacts can stick to the surface and be difficult to remove. The contact lens...
Whether for comfort or for economy, you may want to change your contact lens solution for a different brand or formula. Contact lens solution is typically made of the same materials, namely salt and water, for every brand, according to GP Contact...
Contact lenses can be used to correct visual acuity in people who are nearsighted (myopic), farsighted (hyperopic) and have irregular corneas (astigmatism). According to the Association of Contact Lens Manufacturers, there are 31 million people in...
Toric contact lenses, designed for people who have astigmatism (irregularly shaped cornea), are similar to ordinary soft and RGP (Rigid Gas Permeable) lenses. In fact, the only difference is the shape. Toric contact lenses curve at different...
Presbyopia is a condition that occurs during the aging process. As a person ages, the muscle surrounding the cornea weakens, so the eyes are not able to focus as clearly. For this reason, a prescription contact lens in the form of bifocals is...
One common problem experienced by many contact lens wearers is eye infections. These are often bacterial, viral or fungal in nature, with some infections being more serious than others. Infections can occur when users routinely wear their lenses...
According to the University of Michigan Kellogg Eye Center, astigmatism usually occurs when the front of the eye -- the cornea -- is curved more in one direction than the other. The resulting distortion in one's vision is much like looking in a...
Contact lenses have evolved in leaps and bounds since the first polymethyl methacrylate hard lens was introduced in the 1940s, with newer materials such as silicone-hydrogel offering greater comfort, ease and extension of wear. However, while...
Soft contact lenses are the most popular type of contact lens prescribed in the United States. Toric contacts are a type of lens that corrects for astigmatism, a common vision problem. Any type of contact lens may become dried out or feel stuck on...
Contact lenses are a convenience that free people from having to wear glasses. However, proper handling and care of your contact lenses is important to keep your eyes healthy and to prevent infections and irritation. It may take a little time to...
The contact lens prescription is essential for the proper vision correction and fit of the lenses. Without the prescription, you cannot, by law, obtain your lenses. You can, however, obtain your prescription from your eye care provider and then...
Special effect contact lenses are available as prescription and non-prescription lenses and in a variety of colors and styles. Prescription contact lenses correct a persons's vision; non-prescription lenses do not change a person's vision but the...
Contact lenses are clear, curved plastic pieces that are placed on the eye to correct vision problems. The lens is placed on the eye's tear film, which is in front of the cornea. Both near and farsighted vision problems can be corrected by wearing...
Contact lenses are primarily used to correct vision problems. Many different types of material are used in making the lenses. Consult an ophthalmologist as to which is best for you.
Contact lenses are thin, curved plastic disks that are placed over the cornea, or the outer layer of the eye, for vision correction. According to the University of Michigan Kellogg Eye Center, there are 24 million people in the United States alone...
When a person has difficulty seeing an object that is far away or in close proximity, the lack of function is related to the inability of the eyes to focus light rays on the retina. The retina is the portion of the eye that transmits images to the...
Contact lenses are an effective aid in correcting poor vision, but sometimes they are not the best option. Cost, comfort and convenience can all be issues that drive a person to seek other alternatives. Contact lenses can be pricey, especially...
Contact lenses are small plastic discs placed in the eyes to correct vision. You may choose to wear contact lenses because it is convenient and affordable. Glasses interfere when you play sports and are vulnerable to scratches. However, removing...
Contact lens wearers understand the importance of cleaning their lenses on a daily basis. Disinfecting their eyewear extends the life of the contacts and reduces the risk of developing a potentially dangerous eye infection. A contact lens case,...
Soft contact lenses may be more comfortable than their rigid counterparts, but they can tear easily. Lenses that have a greater water content or that are extra thin are more prone to tearing. Lenses can tear as a result of improper insertion or...
Contact lens overwear syndrome occurs when contact lenses are worn for too long. In contact lens wearers, the amount of oxygen that the cornea receives decreases, and if the contact lens is worn for too long, the cornea develops problems. In many...
Caring for your contact lenses properly is extremely important. Cleaning the lenses with appropriate solutions helps prevent infections, some of which could cause blindness, explains the All About Vision website. Some contact lens solutions are...
Contact lens prescriptions contain various abbreviations and numbers that can be difficult to decipher if you aren't familiar with their meanings. Your prescription will tell you exactly what is wrong with each eye and what your contact lens will...
When it comes to contact lenses, one type no longer fits all. Contact lenses have come a long way since the hard plastic lenses of the 1950s. Today, in addition to hard lenses (vastly improved from those of 50 years ago), there are soft lenses...
Taking proper care of contact lenses can mean the difference between a comfortable day and a day of itchy, irritating eyes. Hydrogen peroxide is one type of cleaner for contacts. It removes minute particles and bacteria that have built up...
Contact lenses are a prescription item used to correct vision problems. A contact lens prescription contains more information than an eyeglasses prescription, because the measurements of the eye are very important when fitting contact lenses. When...
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