Contact lenses are miraculous pieces of plastic that allow you to see without glasses. In most cases, contact lenses are used as a substitute for eyeglasses, allowing less of them. Contact lenses can also be used to treat certain diseases of the eye or can be used for cosmetic purposes to change the apparent color of eyes.
Success-contact lenses requires a "partnership" between the editor, ie, an ophthalmologist, an optometrist, or possibly an optician, and you, the wearer.
The installer must first decide if your eyes are healthy enough to wear contact lenses. In this case, the installer then fits the correct lenses for your eyes and your needs and teaches you how to use and care for them.
The installer must be available in case of problems to develop, if not available, then the installer must have a system in place to deal with these situations.
You must follow the care instructions, and wear your lenses properly, and return as required for routine care and emergency services.
An installer can be an ophthalmologist, an optometrist, or possibly an optician.
Ophthalmologists are physicians who have graduated from college, and a school of medicine (MD) or osteopathy (DO), after which three to five years of training are needed and spent studying eye exams (including fitting of contact lenses and goggles), diagnosis and treatment of eye diseases, and performing eye surgery. Ophthalmologists perform both traditional surgery and laser surgery.
Optometrists have graduated from a school of optometry (OD), which were trained in eye examinations, fitting of contact lenses and glasses, and, depending on the state licensure, the treatment of certain eye diseases. Optometrists do not perform traditional surgery or laser eye surgery.
Optical glasses mounted on a prescription from an ophthalmologist or an optometrist. In some states, opticians may fit contact lenses. Opticians do not perform eye tests do not diagnose or treat diseases of the eye, and do not perform surgery.
Soft lenses and rigid gas permeable (RGP) lenses are lenses available main. Each has a specific and specific wear and care regime. The old hard (PMMA) lenses are rarely used today and have risks similar to RGP lenses. There are more scleral lenses available for the particular conditions of the eyes.
Contact lenses are mainly used to avoid having to wear glasses in conditions such as nearsightedness, farsightedness and astigmatism or to avoid the use of bifocals (multifocal).
They can also be used to treat other conditions. Keratoconus is a condition in which the surface of the eye has a very irregular shape (astigmatism). When the glasses no longer provides adequate vision, contact lenses are used.
The contact lenses are often used after refractive surgery when under-or over-correction occur. After the surgery, and in some cases of eye diseases of the cornea, bandage soft contact lenses may be used to allow the cornea to heal or may be used to relieve pain.
Some lenses are designed for daily wear. With daily wear soft contact lenses, wear lenses for a day and then discard it. This allows you to do without solutions, cleaning and disinfecting the lenses. It allows intermittent wear as weekend or occasional wear, as desired. Most of the soft lenses and some RGP lenses are worn for one day and then removed, cleaned and disinfected every night. Soft lenses are usually replaced on a regular basis, ranging from one week to one month to three months to a year. RGP lenses can last for years with regular care.
Extended wear lenses, usually soft, worn at night for a week and then replaced every one or two weeks. Trying to extend the wear of lenses beyond the recommended replacement schedule is a false economy and an invitation to potential disaster.
Port nocturnal decreases the amount of oxygen available to the eye and increases the (rare) possibility of infection of four times. For this reason, some practitioners do not recommend prolonged use of contact lenses. Latest lenses can be more secure.
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