Contact lenses have been proven great lifestyle enhancers and now come in various kinds and styles to accommodate almost any vision condition. Yet, with all the information available concerning contacts, there are times when questions pop up in regard to whether or not a person should wear them in certain situations. The following will hopefully answer some of these questions and clarify any uncertainty.
Can I wear my contact lenses while applying eye makeup? Yes, in fact it is preferable that you insert your contacts before the application if makeup products as a means to minimize the contamination of the lenses. Always wash your hands thoroughly before touching your contacts. Use only non-allergenic makeup; water-based cream eye shadows are recommended instead of oil-based and powders. If you are a stickler for powder, keep your eyes closed during application and brush away any excess before opening them. Keep eyeliner away from the part of the lashes that are closest to the eye. When removing makeup, wash and dry your hands and take out your lenses first—always being careful not to bring them into contact with any makeup.
What about beach and water activities, or sunbathing? Care must be taken when wearing your contacts in lakes, pools, hot tubs, or the ocean. Water in the eyes leaves your lenses subject to infection-causing pathogens. It is recommended that you remove your contacts before going into the water or protect them by wearing swim goggles. Lenses that are splashed with water must be removed immediately and thoroughly cleaned, rinsed, and stored using proper solution. For water activities, daily disposable contact lenses are the best option since they can be removed, thrown away, and replaced with a fresh pair. As for sunbathing, since the corneas may swell, the tighter lens fit could cause temporary irritation and redness. If you insist on wearing your lenses, put a safe lubricating drop in yours eyes before lying in the sun (your eye doctor can help you choose the right kind). Whether your contacts are in or out during tanning, always use a good pair of UV-blocking sunglasses to protect all portions of your eyes.
Can contact lenses be worn in airplanes? Are solutions barred from carry-on items? The air in plane cabins tends to be of lower humidity, which can lead to dry eye issues. Lubricating eye drops may help, but in the event of persistent symptoms it is best to do without lenses and wear eyeglasses during flights. But of course individual comfort levels vary. The Transportation Security Administration’s rules for carry-on liquids* require that saline solutions and eye drops must be in 3-ounce or smaller containers carried in a 1-quart zip-top clear plastic bag. Any amounts larger than three ounces or not in the 1-quart bag must be declared to security officers at airport checkpoints.
Never feel uncomfortable about asking questions concerning your contact lenses or their wear. Consulting your eye doctor can provide you with the best and most complete information regarding your personal eye health.
*Website found at www.tsa.gov.
Friday, September 17, 2010
Friday, August 27, 2010
Back to School: Pencils, Books, Backpacks, and an Eye Exam
Kids will be starting or returning to school in a few days and the hurried activity to get them ready with all their needed supplies is well underway. But have parents thought about one ‘item’ that can really help a child’s classroom performance—an eye exam?
Now is an ideal time to schedule an appointment with the eye doctor and establish a regular schedule of exams. In today’s classroom, a child’s eyes are confronted with all sorts of visual stimuli: overhead projectors, blackboards and whiteboards, text and workbooks, computers, and participation in school activities and sports. Reading and studying levels increase. Since school age children are at the stage where eyes change rapidly as they encounter normal growth patterns, a preventive stance certainly makes sense.
When experiencing a vision problem, a child may not say anything about it, as at their young age they will assume that is how everyone sees. In this situation the effects of dealing with an undiagnosed condition such as hyperopia (farsightedness) or myopia (nearsightedness) on the part of the child can lead to short attention spans, frustration, and avoidance of schoolwork. Amblyopia (lazy eye) is a condition that must be treated early (by the age of seven) or chances of good vision in the affected eye are considerably lessened. Unfortunately, there are times when an undiagnosed eye problem may be mistakenly labeled as a learning disability or behavioral issue. This unnecessary complication can be avoided by proactive eye exams, which allow problems to be detected and addressed before they hamper performance in the classroom.
Leaving the detection of eye trouble up to school screenings alone may not be a good idea. Many of these tests are based on evaluating clarity and distance; a child passing them could still have a vision problem. Necessary eye functions that allow for recognition, comprehension, and eye-hand coordination need to be monitored as well.
If the time comes for a child’s vision correction, eyeglasses are usually thought of first, but contact lenses are just as viable an option. Recent studies have shown that children as young as eight can be successfully introduced to contacts, especially in cases where the child’s sense of responsibility and follow-through allows them to satisfactorily assume the care regimen that comes with certain types of contacts. Once a child demonstrates the skill to handle contact lenses, then a consultation can take place with an eye doctor who will prescribe, fit, and monitor the proper lens. Positive results from contact lenses, other than vision correction, include perception of an improved appearance that heightens self-esteem and being able to better cope with sports and activities that are hindered by eyeglasses.
An important fact is that 80% of a child’s learning comes visually; so scheduling an eye exam now is not only a smart decision, but a necessary preventive approach when it comes to minimizing eye health problems.
Now is an ideal time to schedule an appointment with the eye doctor and establish a regular schedule of exams. In today’s classroom, a child’s eyes are confronted with all sorts of visual stimuli: overhead projectors, blackboards and whiteboards, text and workbooks, computers, and participation in school activities and sports. Reading and studying levels increase. Since school age children are at the stage where eyes change rapidly as they encounter normal growth patterns, a preventive stance certainly makes sense.
When experiencing a vision problem, a child may not say anything about it, as at their young age they will assume that is how everyone sees. In this situation the effects of dealing with an undiagnosed condition such as hyperopia (farsightedness) or myopia (nearsightedness) on the part of the child can lead to short attention spans, frustration, and avoidance of schoolwork. Amblyopia (lazy eye) is a condition that must be treated early (by the age of seven) or chances of good vision in the affected eye are considerably lessened. Unfortunately, there are times when an undiagnosed eye problem may be mistakenly labeled as a learning disability or behavioral issue. This unnecessary complication can be avoided by proactive eye exams, which allow problems to be detected and addressed before they hamper performance in the classroom.
Leaving the detection of eye trouble up to school screenings alone may not be a good idea. Many of these tests are based on evaluating clarity and distance; a child passing them could still have a vision problem. Necessary eye functions that allow for recognition, comprehension, and eye-hand coordination need to be monitored as well.
If the time comes for a child’s vision correction, eyeglasses are usually thought of first, but contact lenses are just as viable an option. Recent studies have shown that children as young as eight can be successfully introduced to contacts, especially in cases where the child’s sense of responsibility and follow-through allows them to satisfactorily assume the care regimen that comes with certain types of contacts. Once a child demonstrates the skill to handle contact lenses, then a consultation can take place with an eye doctor who will prescribe, fit, and monitor the proper lens. Positive results from contact lenses, other than vision correction, include perception of an improved appearance that heightens self-esteem and being able to better cope with sports and activities that are hindered by eyeglasses.
An important fact is that 80% of a child’s learning comes visually; so scheduling an eye exam now is not only a smart decision, but a necessary preventive approach when it comes to minimizing eye health problems.
Friday, August 13, 2010
Computers and Contact Lenses
The use of home and office computers has become so prevalent in just the last generation that we find it hard to believe how we ever got along without them. While they have been a definite boon to our quality of life and work, they have also handed us a whole new hurdle when it comes to eye care.
An outgrowth of extended computer use has been what the doctors term Computer Vision Syndrome (CVS), an increasingly common occurrence defined by tired or burning dry eyes and headaches caused by the strain of focusing on the screen over long periods of time. The eyes work differently when viewing a computer screen as opposed to regular day-to-day vision requirements. Constant and focused concentration on the computer screen changes the rate of blinking, which leads to dryer eye tissues. As a consequence the contact lens wearer focused on a computer screen will feel that their lenses are drying faster and causing some level of discomfort, or even perhaps poorer vision quality.
Just like other industries that have provided other types of long-term solutions for computer workers, the optical industry has made its own contributions. As an example, there is eyewear available with specialized lenses that work to reduce glare and assist users in enjoying a more comfortable visual experience at the computer. The contact lens industry proposed silicone hydrogel lenses, made of a new material that binds less water than the older polymers with higher water content. These may also have specialized wetting agents bound to their surface or incorporated into their polymer matrix in order to preserve the desired hydration for longer periods—even in difficult situations. Silicone hydrogel lenses also provide the highest oxygenation levels in the industry and remain moist. In fact, these lenses transmit oxygen an average of six times more than prior lenses, allowing for optimum eye and cornea health.
For those entering the world of presbyopia (the decreased accommodation at different fields of vision that usually occurs after the age of 40), multifocal contact lenses provide a progression of corrective powers from far, intermediate to near vision. This smooth flow of vision while working at the computer is less jarring than the effect of bifocals, which can leave you bobbing your head up and down adjusting to the abrupt change from far to near lens power. By having an intermediate range, multifocals allow you to keep your head in one position while your eyes scan the screen through the mid and near portions of your lens.
Your eye doctor can diagnose for CVS and help you choose a contact lens that can compliment your computer work. Once you have a valid lens prescription, an online retailer can easily be found who will provide you with a money-saving and convenient avenue for purchasing your contact lenses.
With the kinds of innovations seen in the contact lens industry through each passing year, efforts shall continue to yield improvements that will give eager lens wearers the best possible contact lens for easing and enhancing our hours at the computer.
An outgrowth of extended computer use has been what the doctors term Computer Vision Syndrome (CVS), an increasingly common occurrence defined by tired or burning dry eyes and headaches caused by the strain of focusing on the screen over long periods of time. The eyes work differently when viewing a computer screen as opposed to regular day-to-day vision requirements. Constant and focused concentration on the computer screen changes the rate of blinking, which leads to dryer eye tissues. As a consequence the contact lens wearer focused on a computer screen will feel that their lenses are drying faster and causing some level of discomfort, or even perhaps poorer vision quality.
Just like other industries that have provided other types of long-term solutions for computer workers, the optical industry has made its own contributions. As an example, there is eyewear available with specialized lenses that work to reduce glare and assist users in enjoying a more comfortable visual experience at the computer. The contact lens industry proposed silicone hydrogel lenses, made of a new material that binds less water than the older polymers with higher water content. These may also have specialized wetting agents bound to their surface or incorporated into their polymer matrix in order to preserve the desired hydration for longer periods—even in difficult situations. Silicone hydrogel lenses also provide the highest oxygenation levels in the industry and remain moist. In fact, these lenses transmit oxygen an average of six times more than prior lenses, allowing for optimum eye and cornea health.
For those entering the world of presbyopia (the decreased accommodation at different fields of vision that usually occurs after the age of 40), multifocal contact lenses provide a progression of corrective powers from far, intermediate to near vision. This smooth flow of vision while working at the computer is less jarring than the effect of bifocals, which can leave you bobbing your head up and down adjusting to the abrupt change from far to near lens power. By having an intermediate range, multifocals allow you to keep your head in one position while your eyes scan the screen through the mid and near portions of your lens.
Your eye doctor can diagnose for CVS and help you choose a contact lens that can compliment your computer work. Once you have a valid lens prescription, an online retailer can easily be found who will provide you with a money-saving and convenient avenue for purchasing your contact lenses.
With the kinds of innovations seen in the contact lens industry through each passing year, efforts shall continue to yield improvements that will give eager lens wearers the best possible contact lens for easing and enhancing our hours at the computer.
Friday, July 30, 2010
Daily Disposables—The Convenient Contact Lens Americans Aren’t Using
Daily disposable contact lenses were first approved for use in the United States in 1994. Yet, sixteen years later, only 10 to 15 per cent of American contacts wearers use them regularly. This is a surprising statistic*, especially in the face of their convenience and availability.
Daily disposables are contacts that are worn once, removed before bedtime, and replaced with a fresh pair the next day. While Americans have been slow to fully embrace daily disposables, other countries have not. For example, Scandinavian countries and Japan are seeing use of these contact lenses at 50 per cent and above. They are also the leading modality of lens wear in Europe and the rest of Asia.
Why is the market share so low in the US? Cost is a factor that weighs against using daily disposables, especially if you rely solely on your eye doctor to get them. However, if you have a valid prescription and go online to source them, you will discover these lenses can be quite affordable--especially as they are available in boxes of 30 and 90 and may be purchased in yearly supplies. Depending on where you shop, discounts and rebates allow you in some instances to have daily disposables for around $1 a day. Since you do not have to buy solutions or lens cases, those expenses are eliminated from the cost calculation for daily disposables. As manufacturers continue to improve on their production efficiencies, product costs for disposables will continue to trend towards a more economical option for consumers.
Daily disposable contact lens wear provides the consumer with a safer option for their ocular health. The day-to-day build-up of protein, lipids, and other substances that occur with other types of contact lenses (even 2-week and 30-day disposables) increases the risk of infection. The replacement frequency inherent with daily disposables reduces this risk. The once-a-day use also provides comfort for those plagued by allergy season, as deposits that trigger those symptoms have less chance to accumulate on the lenses. In addition to the standard correction for near- and farsightedness, there are now daily disposable torics for astigmatism, multifocals for presbyopia, and UV blocking lenses that protect the cornea.
When daily disposables were first approved for use, only one manufacturer (Johnson & Johnson/Vistakon) made them. Today, all the major contact lens companies offer lenses in this modality, including Bausch & Lomb, CIBA Vision, and CooperVision.
Ask your eye doctor whether you are a candidate for daily disposable contact lenses. The rest of the world has already discovered their convenience and comfort, why not you?
*According to Dr. Renee Reeder, OD, Associate Professor and Chief of the Cornea Center for Clinical Excellence at the Illinois College of Optometry in Chicago.
Daily disposables are contacts that are worn once, removed before bedtime, and replaced with a fresh pair the next day. While Americans have been slow to fully embrace daily disposables, other countries have not. For example, Scandinavian countries and Japan are seeing use of these contact lenses at 50 per cent and above. They are also the leading modality of lens wear in Europe and the rest of Asia.
Why is the market share so low in the US? Cost is a factor that weighs against using daily disposables, especially if you rely solely on your eye doctor to get them. However, if you have a valid prescription and go online to source them, you will discover these lenses can be quite affordable--especially as they are available in boxes of 30 and 90 and may be purchased in yearly supplies. Depending on where you shop, discounts and rebates allow you in some instances to have daily disposables for around $1 a day. Since you do not have to buy solutions or lens cases, those expenses are eliminated from the cost calculation for daily disposables. As manufacturers continue to improve on their production efficiencies, product costs for disposables will continue to trend towards a more economical option for consumers.
Daily disposable contact lens wear provides the consumer with a safer option for their ocular health. The day-to-day build-up of protein, lipids, and other substances that occur with other types of contact lenses (even 2-week and 30-day disposables) increases the risk of infection. The replacement frequency inherent with daily disposables reduces this risk. The once-a-day use also provides comfort for those plagued by allergy season, as deposits that trigger those symptoms have less chance to accumulate on the lenses. In addition to the standard correction for near- and farsightedness, there are now daily disposable torics for astigmatism, multifocals for presbyopia, and UV blocking lenses that protect the cornea.
When daily disposables were first approved for use, only one manufacturer (Johnson & Johnson/Vistakon) made them. Today, all the major contact lens companies offer lenses in this modality, including Bausch & Lomb, CIBA Vision, and CooperVision.
Ask your eye doctor whether you are a candidate for daily disposable contact lenses. The rest of the world has already discovered their convenience and comfort, why not you?
*According to Dr. Renee Reeder, OD, Associate Professor and Chief of the Cornea Center for Clinical Excellence at the Illinois College of Optometry in Chicago.
Friday, July 16, 2010
Shopping Online for Contacts: Security and Privacy
The Fairness to Contact Lens Consumer Act, signed into law in 2004, empowered lens wearers with the right to obtain a copy of their contact lens prescription from their eye doctor. After years of anticipation, contact lens wearers were finally free to purchase their contact lens replacements wherever they felt was appropriate for them. Although mail order companies had sold contact lenses for years, online contact lens replacement providers were growing in popularity and using popular search engines to market their services to consumers.
Today, more and more consumers find that online shopping saves them money and is convenient, but how do you determine which sites are safe to deal with? Everyone is looking for great prices, but the overriding concern is to find vendors who have secure websites that protect your privacy.
How does one go about finding a secure shopping site? There are two indicators you can check to determine if a website is properly safeguarded. The first is by looking at the URL, or web page address, at the top of your web browser. As you may have noticed during your Internet surfing experience, most begin with “http”. However, a secure site will have an address that begins “https”. Be sure the latter prefix exists when you arrive at a web page on which you will be actually entering sensitive information. The added ‘s’ is a signal to users that information (e.g. names and passwords) will be encrypted as it is transmitted. The second check for a safe site is to search for the padlock icon, usually located at the bottom of the screen. If the padlock is closed, the site is secure. Make sure this icon is in the browser window and not in the web page area. A click (or double-click) on a legitimate padlock icon will display a website’s security information.
Reputable shopping sites also have privacy policies posted that can be easily found and understood. This is where you will learn if the contact lens vendor shares your information with affiliated companies or other third parties. If they do, there is an almost certain likelihood you will receive unsolicited e-mail (‘spam’)—unless the vendor expressly restricts these parties from marketing in this manner. Also look to see if the site belongs to a ‘seal of approval’ program administered by the Better Business Bureau or others whose job it is to set guidelines for privacy practices.
Keep in mind that policies can change, especially if the website happens to be sold to or purchased by other companies. Review the policies at websites you do business with at regular intervals so any sudden ‘switches’ will not surprise you. This will allow you to take timely action to stop your information from being misused.
Since there are never any guarantees, care and research is necessary in selecting a legitimate online contact lens seller. However, this should not deter you from taking advantage of the convenience offered by online shopping. Remember, a responsible shopper will always be in a better position to take advantage of new opportunities. Take the time to locate responsible vendors that will safeguard their customers’ security and privacy.
Today, more and more consumers find that online shopping saves them money and is convenient, but how do you determine which sites are safe to deal with? Everyone is looking for great prices, but the overriding concern is to find vendors who have secure websites that protect your privacy.
How does one go about finding a secure shopping site? There are two indicators you can check to determine if a website is properly safeguarded. The first is by looking at the URL, or web page address, at the top of your web browser. As you may have noticed during your Internet surfing experience, most begin with “http”. However, a secure site will have an address that begins “https”. Be sure the latter prefix exists when you arrive at a web page on which you will be actually entering sensitive information. The added ‘s’ is a signal to users that information (e.g. names and passwords) will be encrypted as it is transmitted. The second check for a safe site is to search for the padlock icon, usually located at the bottom of the screen. If the padlock is closed, the site is secure. Make sure this icon is in the browser window and not in the web page area. A click (or double-click) on a legitimate padlock icon will display a website’s security information.
Reputable shopping sites also have privacy policies posted that can be easily found and understood. This is where you will learn if the contact lens vendor shares your information with affiliated companies or other third parties. If they do, there is an almost certain likelihood you will receive unsolicited e-mail (‘spam’)—unless the vendor expressly restricts these parties from marketing in this manner. Also look to see if the site belongs to a ‘seal of approval’ program administered by the Better Business Bureau or others whose job it is to set guidelines for privacy practices.
Keep in mind that policies can change, especially if the website happens to be sold to or purchased by other companies. Review the policies at websites you do business with at regular intervals so any sudden ‘switches’ will not surprise you. This will allow you to take timely action to stop your information from being misused.
Since there are never any guarantees, care and research is necessary in selecting a legitimate online contact lens seller. However, this should not deter you from taking advantage of the convenience offered by online shopping. Remember, a responsible shopper will always be in a better position to take advantage of new opportunities. Take the time to locate responsible vendors that will safeguard their customers’ security and privacy.
Friday, July 9, 2010
Summer Fun and Contact Lenses
The summer months are the most active for those who enjoy outdoor activities and are certainly the most comfortable. Dashing out the door without having to burden yourself with extra clothing after a long winter is a liberating feeling, especially for those who wear contact lenses instead of glasses.
Not only are contact lenses convenient, they are also more practical. How many times have eyeglasses gotten in the way of enjoying outdoor games and pastimes because of decreased peripheral vision and slipping frames? Contacts eliminate both of those problems. If you still wear specs and continue to struggle through warm weather activities, then it is time to seriously consider switching to contacts.
The selection of contact lenses has never been greater, due to ongoing improvements and innovations targeted to enhance comfort and convenience. Soft contacts (including silicone hydrogels) have come along to extend wear time and maximize moisture for healthy eyes. Multifocal and toric lenses are available for those with presbyopia and astigmatism, so all ages can enjoy the benefits these contacts give. Many of these offer UV blocking* as an added measure of protection against the sun.
With the introduction of daily disposables water sports have become less of a problem. Whether one is swimming in lake water, municipal pool, or a familiar private swimming pool, water splashed in the eyes while wearing contact lenses increases the chances of infection and other eye damage caused by microorganisms in the water. These incidences are minimized when the affected contacts are promptly removed and replaced with a fresh pair. Daily disposables also mean you no longer have to carry cleaning and solution kits to disinfect your lenses.
Today there are online retailers that make it very convenient to purchase contact lenses inexpensively and in a timely manner. Quick surfing of the Internet will give you a list of vendors who will meet your needs. All that is required is a valid prescription provided by your eye doctor. Purchasing lenses online cuts down on traveling to box store lens sellers and wasting valuable time that is better spent enjoying your summer.
Consult with your eye doctor who will assist you in choosing and fitting the appropriate contact lens for your needs. Nothing defines ‘carefree summer days’ more than the ability to leave your eyeglasses behind and enjoy the natural feel of wearing contacts during warm weather activities.
*Keep in mind that contact lenses that block UV radiation only protect the cornea—that part of the eye covered by the lenses. For full eye protection from UV rays, appropriate sunglasses that shield the entire eye area are needed.
Not only are contact lenses convenient, they are also more practical. How many times have eyeglasses gotten in the way of enjoying outdoor games and pastimes because of decreased peripheral vision and slipping frames? Contacts eliminate both of those problems. If you still wear specs and continue to struggle through warm weather activities, then it is time to seriously consider switching to contacts.
The selection of contact lenses has never been greater, due to ongoing improvements and innovations targeted to enhance comfort and convenience. Soft contacts (including silicone hydrogels) have come along to extend wear time and maximize moisture for healthy eyes. Multifocal and toric lenses are available for those with presbyopia and astigmatism, so all ages can enjoy the benefits these contacts give. Many of these offer UV blocking* as an added measure of protection against the sun.
With the introduction of daily disposables water sports have become less of a problem. Whether one is swimming in lake water, municipal pool, or a familiar private swimming pool, water splashed in the eyes while wearing contact lenses increases the chances of infection and other eye damage caused by microorganisms in the water. These incidences are minimized when the affected contacts are promptly removed and replaced with a fresh pair. Daily disposables also mean you no longer have to carry cleaning and solution kits to disinfect your lenses.
Today there are online retailers that make it very convenient to purchase contact lenses inexpensively and in a timely manner. Quick surfing of the Internet will give you a list of vendors who will meet your needs. All that is required is a valid prescription provided by your eye doctor. Purchasing lenses online cuts down on traveling to box store lens sellers and wasting valuable time that is better spent enjoying your summer.
Consult with your eye doctor who will assist you in choosing and fitting the appropriate contact lens for your needs. Nothing defines ‘carefree summer days’ more than the ability to leave your eyeglasses behind and enjoy the natural feel of wearing contacts during warm weather activities.
*Keep in mind that contact lenses that block UV radiation only protect the cornea—that part of the eye covered by the lenses. For full eye protection from UV rays, appropriate sunglasses that shield the entire eye area are needed.
Thursday, July 1, 2010
‘Piggybacking’ and ‘Vaulting’ Contact Lenses for Keratoconus
The cornea of the eye is the ‘window’ that allows light to be reflected onto the retina to enable our sight. One of the irregularities that can afflict the cornea is the disease called keratoconus.
Keratoconus occurs most frequently during the teen years or early 20s. It causes the naturally rounded cornea to become more cone-shaped, resulting in nearsightedness, astigmatism, and light sensitivity. Changes in eyeglass prescriptions tend to be necessary upon each visit with the eye doctor and, for many years, patients were told they could not wear contact lenses. Fortunately, some excellent options have been developed and marketed. These options can provide keratoconus patients with a contact lens option in various lens materials and designs.
Initially, rigid gas permeable (RGP or GP) lenses were the only type of contact used because their firmness restored a symmetrical window, correcting the focus of light into the eye. However, there were cases where keratoconus made the eye so sensitive that GP lenses could not be worn due to pressure exerted on corneal tissue. A solution called ‘piggybacking’ was developed.
In ‘piggybacking’ eyes that cannot tolerate GP contact lenses are first fitted with a soft lens that is intended to act as a cushion. Then, a GP is fitted over the soft lens. This achieves both the comfort and correction needed to overcome the effects of keratoconus. The one concern with this method is the issue of oxygen permeability necessary to keep the eye healthy. Fortunately, the advance of hydrogel and silicone hydrogel lenses has greatly increased oxygen flow for their wearers; GPs have also improved in oxygen transmission by way of new materials development in that segment. Despite this advantage, ‘piggyback’ patients need to be monitored by their eye doctor to prevent any problems that might occur.
One other innovation is the hybrid lens, which combines features of GP and soft contacts. Unlike the ‘piggyback’ lens option where two different lenses are used, with the hybrid lens there exists a center portion, made of a non-pliable material, while the outer skirt is made of a soft hydrogel material. This type of contact lens performs a function in which the corrective window ‘vaults’ over the cornea, eliminating any uncomfortable pressure. This is closer to the fit wearers have come to expect from current lenses.
Being diagnosed with keratoconus is not an automatic sentence to eyeglasses. It may take some patience and close consultation and visits with your eye doctor, but the options available give lens users good opportunities to keep the freedom and comfort of contact lenses.
Keratoconus occurs most frequently during the teen years or early 20s. It causes the naturally rounded cornea to become more cone-shaped, resulting in nearsightedness, astigmatism, and light sensitivity. Changes in eyeglass prescriptions tend to be necessary upon each visit with the eye doctor and, for many years, patients were told they could not wear contact lenses. Fortunately, some excellent options have been developed and marketed. These options can provide keratoconus patients with a contact lens option in various lens materials and designs.
Initially, rigid gas permeable (RGP or GP) lenses were the only type of contact used because their firmness restored a symmetrical window, correcting the focus of light into the eye. However, there were cases where keratoconus made the eye so sensitive that GP lenses could not be worn due to pressure exerted on corneal tissue. A solution called ‘piggybacking’ was developed.
In ‘piggybacking’ eyes that cannot tolerate GP contact lenses are first fitted with a soft lens that is intended to act as a cushion. Then, a GP is fitted over the soft lens. This achieves both the comfort and correction needed to overcome the effects of keratoconus. The one concern with this method is the issue of oxygen permeability necessary to keep the eye healthy. Fortunately, the advance of hydrogel and silicone hydrogel lenses has greatly increased oxygen flow for their wearers; GPs have also improved in oxygen transmission by way of new materials development in that segment. Despite this advantage, ‘piggyback’ patients need to be monitored by their eye doctor to prevent any problems that might occur.
One other innovation is the hybrid lens, which combines features of GP and soft contacts. Unlike the ‘piggyback’ lens option where two different lenses are used, with the hybrid lens there exists a center portion, made of a non-pliable material, while the outer skirt is made of a soft hydrogel material. This type of contact lens performs a function in which the corrective window ‘vaults’ over the cornea, eliminating any uncomfortable pressure. This is closer to the fit wearers have come to expect from current lenses.
Being diagnosed with keratoconus is not an automatic sentence to eyeglasses. It may take some patience and close consultation and visits with your eye doctor, but the options available give lens users good opportunities to keep the freedom and comfort of contact lenses.
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