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...
There are a variety of contact solutions available. Ultimately, the biggest factor that is going to influence the kind of contact solution you buy is the type of contacts you wear. Hard and soft lenses require different methods of cleaning;...
Keeping your contact lenses clean is important to avoid corneal infection. According to the MayoClinic.com, all types of contact lenses, be they soft contacts or gas-permeable "hard" lenses, reduce the flow of oxygen to your eye, which in turn...
Extended wear contact lenses are U.S. Food and Drug Administration approved for overnight wear without removal for seven to 30 days depending on the type of lenses prescribed. Generally, lenses are categorized as rigid, gas-permeable or soft. Soft...
Wearing contact lenses give some people the much desired freedom to wear sunglasses or participate in sports without glasses obstructing their view. However, contact lens use requires care and periodic follow-up with an eye care professional....
Pink eye, the more common term for conjunctivitis, is the inflammation or infection of the eyelids. Contact-wearers are at a greater risk of this condition, says MedlinePlus, because of the process involved in inserting and removing contact...
Toric contact lenses correct astigmatism caused by a slightly irregular-shaped cornea. They differ from regular lenses in that toric contact lenses have two powers: one to correct astigmatism, the other to correct near-sightedness or...
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...
Although some types of contact lenses are made to wear for extended periods of time, most conventional lenses are designed for daily wear and must be removed for cleaning and disinfecting every night before you go to sleep. Sleeping in contact...
Contact lenses are as diverse as the patients that wear them. What type of contact lens one patient ranks as number one versus what another patient likes best is an individual choice. Some patients' eyes will only tolerate single use lenses while...
Contact lenses, or contacts, are thin pieces of rigid or flexible plastic that can be applied to the cornea of the eye. They can be used to serve a variety of purposes. They may be used correctively in the same way as glasses, therapeutically to...
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...
Toric contact lenses are usually prescribed to correct astigmatism, a common vision problem. Toric lenses have special curves to help compensate and correct for astigmatism.
Contact lenses are an option for many people who need vision correction but do not wish to wear glasses. Typically, eye care professionals will provide patients with a copy of the prescription required to purchase lenses through retail vendors,...
Almost everyone has to use optical aids like bifocals for reading by the age of 50. Presbyopia is the gradual loss of the eye's ability to adjust and focus when trying to read or see up close, according to the National Eye Institute. Luckily,...
Contact lenses offer an attractive alternative for those who have vision defects but prefer not to wear glasses. There are a wide variety of different contact lenses on the market. Some are geared to special vision needs, others offer...
It's all too easy to forget you're wearing your contact lenses when you drift off to sleep for a short nap, but you probably won't forget about them upon waking. Most lens wearers have experienced the dry, irritable feeling of contacts left in...
The purpose of the inner layer or the endothelium of the cornea is to pump the fluid out of the cornea and keep it clear. When the endothelial cells stop working, the cornea swells; this is called corneal edema. The endothelial cells can be...
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...
Contact lenses have become an increasingly popular alternative to glasses for corrective vision since they first hit the market in 1979, according to EyeTopics.com. Innovations in lens type and comfort have made contact lenses more versatile, less...
Contact lenses have many benefits, including the ability to engage in physical activity without worrying about eyeglass frame or lens damage, and a more fashionable appearance to the face. There are many contact lens wearers in the United States...
Contact lenses are small plastic discs that correct visual problems much like glasses do. In 1837, Swiss physician Dr. Fick and optician Edouard Kalt developed the first glass contact lens. Today, the contact lens can change your eye color as well...
An eye, or corneal, ulcer is an area of infection or inflammation in the cornea. These can be caused by bacteria, viruses, parasitic organisms, fungi or the organism Acanthamoeba. Eye ulcers present with pain, eye redness and decreased vision. If...
Acuvue 2 contact lenses are disposable prescription lenses made by Johnson & Johnson Vision Care. Made from a soft silicon material called etafilcon A, Acuvue 2 contacts allow oxygen to pass through the lens and to the cornea of the eye. This...
People with vision abnormalities often consider using contact lenses or laser eye surgery instead of eyeglasses. There are several facts to keep in mind about these methods of vision correction when making a decision between them.
Contact lenses fit snugly in the eye to correct vision without the need for wearing traditional glasses. The original concept for lenses was first proposed by Leonardo da Vinci in the early 1500s. It took approximately 270 years to design a...
Many people wear contact lenses for vision correction purposes. However, although contact lenses are simple and effective, and can eliminate the need for glasses, they can also cause problems if not cared for properly. Contact lenses vary in the...
Acuvue Bifocals are designed with multiple concentric zones of power. Certain rings are for distance power, others are for near vision. The pupil reacts to light by dilating or constricting, and this results in specific zones being simultaneously...
Pink eye (conjunctivitis) is an inflammation or infection of the transparent membranes (conjunctiva) that line your eyelid and part of your eyeball. The cause of pink eye is commonly a bacterial or viral infection, an allergic reaction or, in...
Carpal tunnel syndrome is often linked to repetitive motion and is diagnosed by pains in the wrist and forearm. Learn about carpal tunnel syndrome in this video.
