by: anutt
Total views: 1
Word Count: 611

The development of the contact lens has changed how those with bad vision see the world. At one time hard lenses were the only contact lenses that anyone had access to, but later came the disposable soft lens that required less care and could be thrown away after a certain time period of wear. Now there are many different options available to contact lens wearers based on their requests and the recommendations of their doctors. This allows more people to wear contact lenses than ever before. Many of those who could not wear contacts years ago, because the kind that was being used was not for them, can now wear them with ease. With their being so many kinds available, the type of contact that is prescribed is dependent upon a person's particular situation. Here are the different types of contact lenses that are available: 1. PMMA lenses, which are also called hard contact lenses are the oldest that are around. Believe it or not they have been around since the 1960s. They are made from polymethyl methacrylate (PMMA). These contacts are very durable, but their disadvantage is the fact that they do not allow oxygen to reach the cornea directly. The oxygen is received in the cornea when the wearer blinks and oxygen-rich tears reach the cornea due to the movement of the lens. They are of low cost, but they are hardly used anymore. However, there are some patients who prefer them. 2. Soft contact lenses are the lenses that are used most often. They are made of plastic and other materials such as silicone. Water is also used in their construction, which makes them soft. They also allow the oxygen to directly reach the cornea. Soft contact lenses are used by 3/4 of the contact wearers in the United States. There are also different types of soft contacts such as: - Daily disposable lenses that must be thrown away at the end of each day. These are more expensive, but the risk of developing an eye infection is minimal. - Toric lenses for astigmatism. These contacts are for those who do not have any other eye issue other than astigmatism that must be corrected. - Extended wear lenses typically last 2-4 weeks. The usage of the 30 day contact started approximately 6 years ago. The risk of infection is higher and they do tend to be somewhat expensive, but the wearer is able to wear the contacts day and night for 30 days without having to take them out. 3. The last type of contact lens is the gas-permeable lens. These are the newer version of the hard lens that are made of silicone and other materials that allows the oxygen to directly reach the cornea. This is why they are called gas permeable. There are so many advantages to using contact lenses for those who are able to wear one of the above that were described. Of course there are risks such as the hard contact lenses being more likely to scratch the cornea and extended wear contacts causing infection, especially if they are not maintained properly. No matter the type of contact lens a person is wearing, it is important to take care of them they way they are supposed to in order to minimize the risk of infection in the eye. Those who develop frequent eye infections may not be allowed to wear them by their doctor. Even those with severe allergies may be forbidden, but contacts open up a whole new world for those who can wear them because they can see things differently.

About the Author

Clearly Contacts is an online contact lens company offering a wide selection of contact lenses to meet your individual needs. Visit them at http://www.clearlycontacts.co.nz/.

---

View PDF | Print View

---

Rating: Not yet rated

--Choose-- 0 1 2 3 4 5

Comments

No comments posted.

Add Comment

You do not have permission to comment. If you log in, you may be able to comment.
Next Article - How To Go About Choosing Fertility Clinics
Previous Article - Pharmacopoeia The Complete Medical Guide

More Related Articles In This Category

1: An Overview On In Vitro fertilization
2: Getting An Understanding On Intrauterine Insemination
3: Intertility Among Men Is On The Rise
4: How Water Helps With Keeping A Healthy Mind
5: It is Possible to Find Relief from the Symptoms of Parkinson's Disease
6: All About Parkinsons Disease Dopamine Levels
7: 10 Reasons Why High Intensity Training Is Superior
8: How Safe Is Lasik Eye Surgery In The Elderly Years ?
9: How To Avoid The Hot Tub Rash
10: In The Ear Hearing Aids Delivers Excellent Sound Quality
11: Foot and Ankle Care for Diabetics
12: Reasons You Might Need A Chicago Podiatry Office
13: Things A Chicago Podiatry Office Might Ask You
14: Get A Foot Up On Finding A Podiatrist
15: Intro Guide to The Types of Corrective Eye Surgery
16: What Does a Foot Doctor Do, Anyway?
17: How to Keep Your Skin Beautiful
18: Take Care When Finding Your Laser Eye Surgery Clinic
19: Intracytoplasmic Sperm Injection Procedures For Males
20: Adult Stem Cells And Advances In Medicine
21: Hearing Aids Provides You With Better Hearing
22: Lasik Eye Surgery Basics
23: Acne Natural Treatment - Cure Acne Naturally
24: In the Mood to Work
25: Depression and Its Impact on the Workplace

---

For WebMasters

Link This Article - HTML Code -

<a href="http://americanahost.com/articles/health/types-of-contact-lenses.html" target=_blank>Types of Contact Lenses</a>

Link This Article - BBcode -

[url=http://americanahost.com/articles/health/types-of-contact-lenses.html]Types of Contact Lenses[/url]

Copy This HTML Code To Put This Article In Your Web Site.

<h1>Types of Contact Lenses</h1><br><br> <br><br> The development of the contact lens has changed how those with bad vision see the world. At one time hard lenses were the only contact lenses that anyone had access to, but later came the disposable soft lens that required less care and could be thrown away after a certain time period of wear. Now there are many different options available to contact lens wearers based on their requests and the recommendations of their doctors. This allows more people to wear contact lenses than ever before. Many of those who could not wear contacts years ago, because the kind that was being used was not for them, can now wear them with ease. With their being so many kinds available, the type of contact that is prescribed is dependent upon a person's particular situation. Here are the different types of contact lenses that are available: 1. PMMA lenses, which are also called hard contact lenses are the oldest that are around. Believe it or not they have been around since the 1960s. They are made from polymethyl methacrylate (PMMA). These contacts are very durable, but their disadvantage is the fact that they do not allow oxygen to reach the cornea directly. The oxygen is received in the cornea when the wearer blinks and oxygen-rich tears reach the cornea due to the movement of the lens. They are of low cost, but they are hardly used anymore. However, there are some patients who prefer them. 2. Soft contact lenses are the lenses that are used most often. They are made of plastic and other materials such as silicone. Water is also used in their construction, which makes them soft. They also allow the oxygen to directly reach the cornea. Soft contact lenses are used by 3/4 of the contact wearers in the United States. There are also different types of soft contacts such as: - Daily disposable lenses that must be thrown away at the end of each day. These are more expensive, but the risk of developing an eye infection is minimal. - Toric lenses for astigmatism. These contacts are for those who do not have any other eye issue other than astigmatism that must be corrected. - Extended wear lenses typically last 2-4 weeks. The usage of the 30 day contact started approximately 6 years ago. The risk of infection is higher and they do tend to be somewhat expensive, but the wearer is able to wear the contacts day and night for 30 days without having to take them out. 3. The last type of contact lens is the gas-permeable lens. These are the newer version of the hard lens that are made of silicone and other materials that allows the oxygen to directly reach the cornea. This is why they are called gas permeable. There are so many advantages to using contact lenses for those who are able to wear one of the above that were described. Of course there are risks such as the hard contact lenses being more likely to scratch the cornea and extended wear contacts causing infection, especially if they are not maintained properly. No matter the type of contact lens a person is wearing, it is important to take care of them they way they are supposed to in order to minimize the risk of infection in the eye. Those who develop frequent eye infections may not be allowed to wear them by their doctor. Even those with severe allergies may be forbidden, but contacts open up a whole new world for those who can wear them because they can see things differently.<br><br> <h3>About The Author</h3> Clearly Contacts is an online contact lens company offering a wide selection of contact lenses to meet your individual needs. Visit them at http://www.clearlycontacts.co.nz/.<br><br> Keywords: <b>contacts,contact lens,contact lenses</b> <br><br>Article Source : <a href="http://americanahost.com/articles"><b>Articles Directory</b></a></br> Article URL : <a href="http://americanahost.com/articles/health/types-of-contact-lenses.html" target=_blank>Types of Contact Lenses</a></br> Article Category : <a href="http://americanahost.com/articles/health/">Health</a></br> Article Author : <a href="http://americanahost.com/articles/profile/anutt-32.html">anutt</a>

---

Article URL : Types of Contact Lenses
Article Category : Health
Article Author : anutt