Different types of contact lenses
Jul 23, · The most common contact lens types include the following: Lens Material: Soft or Hard (Rigid Gas Permeable) Wear Schedule: Daily Wear or Extended Wear. Replacement Schedule (for soft contact lenses): Daily Disposable or Planned Replacement. Less commonly, people wear other types of contact lenses for special reasons. Mar 23, · Soft contact lenses (both hydrogel and silicone hydrogel lenses) are available in a variety of designs, depending on their intended purpose: Spherical contact lenses have the same lens power throughout the entire optical part of the lens to correct myopia Toric soft contact lenses have different.
There are many different contact lens types available, all of which require a prescription from an eye care provider. To get a prescription for contact lenses, an eye care provider will:. How much to remodel a bathroom eye care provider will help you get the best possible vision and comfort from contact lenses.
Wearing contact lenses without a proper fitting and lens care instructions from an eye care provider can lead to eye injury, infection, or other complications 12. Contact lens types may differ based on what they are made from lens materialhow long they are designed for wearing each day wear scheduleand how often they should be replaced replacement schedule.
The most common contact lens types include the following:. Less commonly, people wear other types of contact lenses for special reasons. Soft contact lenses are made of soft, flexible plastics that allow oxygen to pass through to the cornea—the clear dome that covers the colored part of the eye. This lens material may be easier to adjust to and provide better initial comfort than hard, or rigid gas permeable, contact lenses. Soft contact lenses are the most common lens material worn.
Hard, or rigid gas permeable RGPcontact lenses are more durable than soft contact lenses and are resistant to buildup of eye-produced deposits on the lens surface. Hard contact lenses generally provide clearer, crisper vision. They also tend to be less expensive over the life of the lens since they last longer than soft contact lenses. Hard contact lenses are easier to handle and less likely to tear. However, they may take a longer period of time to adjust to as compared to soft contact lenses.
They also require a more complex cleaning and disinfection process than soft contact lenses. Daily wear contact lenses are intended for use during the day. They are not designed for overnight wear. Remove daily wear contact how to do french braids with weave each night, rub and rinse with contact lens solution, and place in a clean contact lens storage case filled with fresh contact lens solution to disinfect them.
Sleeping in daily wear contact lenses can increase the chances of getting a serious eye infection Extended wear contact lenses are available for overnight wear ranging from one to six nights or up to 30 days. Extended wear contact lenses are usually made of soft plastics that allow more oxygen to pass through to the cornea. There are also a few brands of hard contact lenses designed and approved for overnight wear 1.
Talk with your eye care provider before considering this option, as overnight contact lens wear has been linked to serious eye infections The majority of soft contact lens wearers must replace their contact lenses according to a schedule prescribed by an eye care provider.
Disposable contact lenses—as defined by the U. With a true daily disposable schedule, a brand new pair of lenses is used each day. Wearing daily disposable contact lenses for more than one day may cause eye discomfort or other complications 23. Discard daily disposable contact lenses at the end of each how to clean your koi pond, and put in a new pair the next day.
Replacement schedules for these contact lenses can vary from seven to 30 days. Talk to your eye care provider about the proper schedule for replacing your specific type of contact lens. Follow these tips to clean, disinfect, and store your contact lenses each time you remove them. Replace your contact lenses as often as your eye care provider tells you.
Wearing contact lenses longer than the recommended replacement schedule can lead to eye discomfort or other complications 12. The types of contact lenses listed above correct vision in the same way that glasses do, only they are in contact with the eye. There are additional contact lens types that people may use to enhance eye color, correct special vision problems or even treat eye diseases. The soft, outer part of the lens increases comfort and helps the lens to stay centered on the eye, while the rigid gas permeable center provides clear vision 1.
This design is intended for people who have irregular corneas. Because this is a newer type of contact lens, there are fewer options available and fewer eye care providers who fit these contact lenses as compared to soft or hard contact lenses. Orthokeratology, or Ortho-K, uses specially designed hard contact lenses to change the shape of the cornea. This contact lens temporarily corrects vision and is mainly used in patients who are nearsighted 1.
Ortho-K lenses are most often prescribed to be worn while sleeping. They are usually removed in the morning and not worn during the day. Most people can go all day without their glasses or contact lenses. For others, vision correction will wear off later in the day. Ortho-K lenses must be worn every night—or on some other prescribed schedule—in order to what are the different types of contact lenses the treatment effect 1. Your eye care provider will determine the best maintenance schedule for you.
A scleral lens is a larger type of hard, or rigid gas permeable RGPcontact lens. Scleral lenses rest on the sclera—the white part of the eye—and not the cornea.
Fluid collects in the small amount of space between the lens and cornea. This fluid protects the cornea and can also help heal damaged corneas 1. Scleral lenses are often prescribed to patients with damaged corneas or patients with severe dry eye conditions. Some people choose to wear contact lenses to enhance or change the color of the eye.
Decorative contact lenses are available with and without vision correction, but all contact lenses require a prescription from an eye care provider. FDA regulations and medical device law deem all contact lenses to be medical devices whether they correct vision or not 1.
Visit an eye care provider for a prescription and follow-up examination to make sure the contact lenses fit properly. Visit the Decorative Contact Lenses page for more information.
Healthy Contact Lens Wear and Care. Section Navigation. Facebook Twitter LinkedIn Syndicate. On This Page. Lens Material. Wear Schedule. Daily Wear. The incidence of contact lens-related microbial keratitis in Australia External. Risk factors for microbial keratitis with contemporary contact lenses: a case-control study External.
The incidence of ulcerative keratitis among users of daily-wear and extended-wear soft contact lenses External. N Engl J Med. The relative risk of ulcerative keratitis among users of daily-wear and extended-wear soft contact lenses. A case control study External. Microbial Keratitis Study Group. Extended Wear. References FDA.
Types of Contact Lenses External. Replacement Schedule The majority of soft contact lens wearers must replace their contact lenses according to a schedule prescribed by an eye care provider.
Daily Disposable. A multi-country assessment of compliance with daily disposable contact lens wear. External Cont Lens Anterior Eye. Compliance with lens replacement and the interval between eye examinations External. Optom Vis Sci. Planned Replacement. Comfort and vision with silicone hydrogel lenses: effect of compliance External. The relationship between compliance with lens replacement and contact lens-related problems in silicone hydrogel wearers External.
Cont Lens Anterior How to get on guest list at vegas clubs. Special Contact Lens Types The types of contact lenses listed above correct vision in the same way that glasses do, what is the moral of the story they are in contact with the eye.
Reference National Keratoconus Foundation. Contact Lenses for KC. External Orthokeratology Ortho-K. Reference FDA. Reference Scleral Lens Education Society.
About External. More Information. References Sauer A, Bourcier T. Microbial keratitis as a forseeable complication of cosmetic contact lenses: a prospective study External. Acta Ophthalmol. Over-the-counter decorative contact lenses: cosmetic or medical devices? A case series. External Eye Contact Lens.
Contact lens wearing time
Various Types of Contact Lenses While there are many brands on the market today, there are really only two types of lenses available: hard and soft. However, because hard lenses take longer to adjust to, many people choose soft lenses. Here’s a comparison to help you decide which type is best for you. When considering which type of contacts would be best for your daily use, it is important to think about the material of the lens. There are five types of lenses, and then depending on the type of lens, the materials they are made of will vary. Soft Contact Lenses. Soft lenses are made of gel-like, water-containing plastics known as hydrogels.
If so, you might just have a few questions about what's available. To help you go to your optician with a better understanding of what contact lenses are available and what type might work best for you the team at Vision Direct have put together this guide.
In the UK there are approximately 3. Soft contact lenses are the most popular choice for a number of reasons. They are made from the latest optical technology, making them comfortable, flexible and extremely breathable for long hours of wear. Their adaptable design also means they are compatible for almost anyone who wants to wear lenses. A soft contact lens wearer also has much more freedom than a gas permeable wearer who is often bound by strict wearing patterns. Soft lenses can be worn sporadically and therefore are a great choice for anyone wants to switch between lenses and glasses frequently.
As everyone leads different lifestyles soft contact lenses are supplied in a variation of different wearing patterns, these are:. Daily disposable contact lenses also known as dailies are designed to be worn for one day and then thrown away.
They require no additional products such as contact lens solution, although wearers sometimes find it handy to have some eye drops available if their eyes start to dry out. Allergy sufferers: Due to the short frequency of wear there is less time for dirt and allergens to build up on the surface and cause irritation. Two weekly disposable lenses are sometimes referred to as weekly wear lenses.
As the name suggests they are worn daily for a period of two weeks then replaced for a new pair. Two-weekly contact lenses require daily cleaning and storage overnight. For this you will need a compatible contact lens solution. Two weekly lenses are great for the following people:. For dry eye sufferers who are struggling with monthly lenses and want a lower cost alternatively to daily disposables.
Monthly disposables are often called monthlies, and similar to two-weekly lenses they are worn daily, cleaned and stored overnight. Extended wear contact lenses are made from silicone hydrogel , one of the latest advancements in lens technology. The silicone hydrogel material allows up to five times more oxygen to reach the eyes surface than that of a traditional soft lens, making these contact lenses exceptionally breathable.
There are daily, two-weekly and monthly silicone hydrogel lenses available such as Day Acuvue Trueye , Clariti and Avaira. Extended wear contact lenses are also a popular choice because they can be worn continuously for a period of time, usually no longer than 30 days.
Myopia : Also called as short-sightedness, is when a person is unable to see objects clearly in the distance. Hyperopia : Also known as long-sightedness, is when a person is unable to see objects clearly up close. Astigmatism : Is a condition that affects the curvature of the eye causing blurred vision.
Gas permeable contact lenses are another option for potential lens wearers. However you should not be put off by the name, unlike soft lenses they do not contain water but they still provide high levels of comfort. They can be created to match many different prescriptions and eye types, making them perfect for those who are harder to fit with soft lenses.
Unlike soft lenses they are a lot more durable and can be worn for longer periods of time, often they are worn daily and replaced every six to twelve months.
They are often available in a range of colours and shades. Coloured or cosmetic lenses can be purchased to match an existing prescription for long or short-sightedness; some of the most popular include the Freshlook range made by Alcon. If you have a more severe eye condition such as astigmatism or presbyopia you will find it difficult to find any mainstream coloured lenses that are compatible.
If you really want to wear coloured lenses we would advise speaking to your optician to see what options are available. Contact Lenses by Brand. Contact Lenses by Type. Eye Care. Types of Contact Lenses Are you considering changing to contact lenses from glasses or do you just want wear contact lenses occasionally? As everyone leads different lifestyles soft contact lenses are supplied in a variation of different wearing patterns, these are: Daily Disposable Two-weekly Disposable sometimes referred to as weekly Monthly Disposable Extended Wear Daily disposable Daily disposable contact lenses also known as dailies are designed to be worn for one day and then thrown away.
People that only want to wear lenses occasionally. Especially useful for sport enthusiasts. Two weekly disposable Two weekly disposable lenses are sometimes referred to as weekly wear lenses. Monthly disposables Monthly disposables are often called monthlies, and similar to two-weekly lenses they are worn daily, cleaned and stored overnight.
Monthlies are great for the following people: People who want to wear their lenses 5 or more days a week. For the cost conscious buying monthly lenses is much more cost effective than dailies.
Extended wear contact lenses Extended wear contact lenses are made from silicone hydrogel , one of the latest advancements in lens technology. Extended wear lenses are perfect for the following people: People that are constantly on-the-go. Anyone seeking a contact lens that requires little time and care.
Soft contact lenses are available to correct the following types of eye conditions: Myopia : Also called as short-sightedness, is when a person is unable to see objects clearly in the distance.
Gas permeable contact lenses Gas permeable contact lenses are another option for potential lens wearers.