Keeping an Eye on Contnct Lenses Safety,Options Shape Contact Lens Decisfons Inagine wearing your contact lenses for a few hours and then.after you pop them out,still seeing clearly for a portion of the day.For certain individuals with nearsightedsess,that inage can be reality,thanks to a new lens the Food and Drug Administration recently cleared for mrketing. The 0K rigid gas-permeable contact lens,made by ConTEX.Sherman Oaks,Calif.. is the first lens desiged to correct nearsightedness by temporarily reshaping the transparent tissue known as the cornea that covers the iris and pupil.It is just one of many choices for the 28 million Arericans who wear contact lenses These medical devices.sold under more than 350 brand nanes,offer murerous options,including rigid-lens handling ease.soft-lens comfort,bifocal vision.a rainbow of colors,no-fuss disposables,and even protective help against ultraviolet radiation. Shaping Up The idea behind the OK lens is not new.Since the early 1960s,sone optonetrists have used comventional daily-wear rigid lenses to reshape corneas.This procedure is called orthokeratology.or Ortho-K.FDA considers such treatnent of an individual patient to be the practice of nedicine.Selling comtacts not cleared for Ortho-K to practitioners for this use is illegal marketing.bowever,so the agency is helping manufacturers obtain clearances specifically for Ortho-K. Studies before FDA began regulating contact lenses,in 1976,show that Ortho-K appears to be safe,says Jares Saviola,0.D.,chief of the vitreoretinal and extraocular devfces branch at FDA's Center for Devices and Radiological Health."The lower your amount of nearsightedness,the greater your probability of success with Ortho-K,”he says. Ortho-K reshaping involves the use of a series of lenses that apply pressure to the cornea.Once the desired result is achieved,use of daily-wear maintenance lenses is crucial to retain the reshaping.If you wear the maintenance lenses
Keeping an Eye on Contact Lenses Safety, Options Shape Contact Lens Decisions Imagine wearing your contact lenses for a few hours and then, after you pop them out, still seeing clearly for a portion of the day. For certain individuals with nearsightedness, that image can be reality, thanks to a new lens the Food and Drug Administration recently cleared for marketing. The OK rigid gas-permeable contact lens, made by ConTEX, Sherman Oaks, Calif., is the first lens designed to correct nearsightedness by temporarily reshaping the transparent tissue known as the cornea that covers the iris and pupil. It is just one of many choices for the 28 million Americans who wear contact lenses. These medical devices, sold under more than 350 brand names, offer numerous options, including rigid-lens handling ease, soft-lens comfort, bifocal vision, a rainbow of colors, no-fuss disposables, and even protective help against ultraviolet radiation. Shaping Up The idea behind the OK lens is not new. Since the early 1960s, some optometrists have used conventional daily-wear rigid lenses to reshape corneas. This procedure is called orthokeratology, or Ortho-K. FDA considers such treatment of an individual patient to be the practice of medicine. Selling contacts not cleared for Ortho-K to practitioners for this use is illegal marketing, however, so the agency is helping manufacturers obtain clearances specifically for Ortho-K. Studies before FDA began regulating contact lenses, in 1976, show that Ortho-K appears to be safe, says James Saviola, O.D., chief of the vitreoretinal and extraocular devices branch at FDA's Center for Devices and Radiological Health. "The lower your amount of nearsightedness, the greater your probability of success with Ortho-K," he says. Ortho-K reshaping involves the use of a series of lenses that apply pressure to the cornea. Once the desired result is achieved, use of daily-wear maintenance lenses is crucial to retain the reshaping. If you wear the maintenance lenses
faithfully,Saviola says,"you may only need to wear the lenses for a portion of the day.“ Borwever,Ortho-K does not work for everyone.Sone people do not experience any significant reduction in nearsightedness."An individual's response is difficult to predict."Saviola says."It may take weeks or months to have an effect." Safety Coneerns The nost serious safety concern with any contact lens is related to overnight use.Extended-wear (overnight)contact lenses--rigid or soft-increase the risk of corneal ulcers,infection-caused eruptions on the cornea that can lead to blindness. Symptoas include vision changes,eye redness,eye discomfort or pain,and excessive tearing. The risk of corneal uleers for people who keep extended-wear lenses in overnight is 10 to 15 tines greater than for those who use daily-wear lenses only while awake. says Janes Saviola.0.D.,chief of the vitreoretinal and extraocular devices hranch at FDA's Cemter for Devices and Radiological Health. Then the eyes are open,he explains,tears carry adequate oxygem to the cornea to keep it healthy.But during sleep.the eye produces fewer tears,causing the cornea to swell.Under the binding down of a rigid contact lens during sleep.the flow of tears and oxygen to the cornea is further reduced.This lack of oxygen leaves the eye vulnerable to infection. Extended-wear rigid lenses also can cause unexpected,sometines undesirable, reshaping of the cornea. Soft extended-wear lenses also bind dowm on the closed eye,but they are porous and al low some tears through during sleep.Because they have so little forn,their binding has little effect on the shape of the eye. FDA has approved extended-wear lenses for use up to seven days before removal for cleaning.Still,there are risks with use of extended-wear lenses,'even if it's just one night.Saviola says.Daily-wear lenses are renoved daily for cleaning and are a safer choice,provided they aren't worn during sleep
faithfully, Saviola says, "you may only need to wear the lenses for a portion of the day." However, Ortho-K does not work for everyone. Some people do not experience any significant reduction in nearsightedness. "An individual's response is difficult to predict," Saviola says. "It may take weeks or months to have an effect." Safety Concerns The most serious safety concern with any contact lens is related to overnight use. Extended-wear (overnight) contact lenses--rigid or soft--increase the risk of corneal ulcers, infection-caused eruptions on the cornea that can lead to blindness. Symptoms include vision changes, eye redness, eye discomfort or pain, and excessive tearing. The risk of corneal ulcers for people who keep extended-wear lenses in overnight is 10 to 15 times greater than for those who use daily-wear lenses only while awake, says James Saviola, O.D., chief of the vitreoretinal and extraocular devices branch at FDA's Center for Devices and Radiological Health. When the eyes are open, he explains, tears carry adequate oxygen to the cornea to keep it healthy. But during sleep, the eye produces fewer tears, causing the cornea to swell. Under the binding down of a rigid contact lens during sleep, the flow of tears and oxygen to the cornea is further reduced. This lack of oxygen leaves the eye vulnerable to infection. Extended-wear rigid lenses also can cause unexpected, sometimes undesirable, reshaping of the cornea. Soft extended-wear lenses also bind down on the closed eye, but they are porous and allow some tears through during sleep. Because they have so little form, their binding has little effect on the shape of the eye. FDA has approved extended-wear lenses for use up to seven days before removal for cleaning. Still, there are risks with use of extended-wear lenses, "even if it's just one night," Saviola says. Daily-wear lenses are removed daily for cleaning and are a safer choice, provided they aren't worn during sleep
Another sight-threatening concern is the infection Acanthanocha keratitis, caused by improper lens care.This difficult-to-treat parasitic infection's symptoms are similar to those of corneal ulcers. The use of bomemde saline from salt tablets is one of the biggest coatributors to Acanthanoeba keratitis in contact lens wearers."FDA no longer coodones the use of salt tablets,and neither should a concerned pharmacist,writes Janet Engle, Pharn.D.,in the 1996 Bandbook of Nonprescription Drugs.Microorganisas may also be present in distilled water.so always use comrercial sterile saline solutions to dissolve enzyue tablets.Heat disinfection is the only method effective against Acanthanoeba,and it also kills organisas in and on the lens case. The Options U.S.Contact Lens Marketplace Soft lenses are much more comfortable than rigid lenses.thanks to their ability to conform to the eye and absorb and hold water.You can get used to soft lenses within days,compared vith 2% several weeks for rigid.An added bemefit is that 15% soft lenses aren't as likely as rigid lenses to hard lenses rigid gas-permeable lenses pop out or capture foreign material like dust underneath.Extra-thin soft lenses are avaflable for very semsitive people. While the ability to hold water increases oxygen permeability of soft lenses, it increases their fragility as well. Rigid lenses gemerally give clearer vision.They can be mrked to show which lens is for which eye.They don't rip or tear,so they're easy to handle. Also,rigid lenses don't absorb chenicals.unlike soft lenses,which Saviola says are like sponges."They'1l suck up any residues on your hands-soap,lotion. whatever." Both soft and rigid lenses offer bifocal correction.In sone nodels,each lens corrects for near and distance vision.In others,one lens is for near vision,and
Another sight-threatening concern is the infection Acanthamoeba keratitis, caused by improper lens care. This difficult-to-treat parasitic infection's symptoms are similar to those of corneal ulcers. The use of homemade saline from salt tablets is one of the biggest contributors to Acanthamoeba keratitis in contact lens wearers. "FDA no longer condones the use of salt tablets, and neither should a concerned pharmacist," writes Janet Engle, Pharm.D., in the 1996 Handbook of Nonprescription Drugs. Microorganisms may also be present in distilled water, so always use commercial sterile saline solutions to dissolve enzyme tablets. Heat disinfection is the only method effective against Acanthamoeba, and it also kills organisms in and on the lens case. The Options Soft lenses are much more comfortable than rigid lenses, thanks to their ability to conform to the eye and absorb and hold water. You can get used to soft lenses within days, compared with several weeks for rigid. An added benefit is that soft lenses aren't as likely as rigid lenses to pop out or capture foreign material like dust underneath. Extra-thin soft lenses are available for very sensitive people. While the ability to hold water increases oxygen permeability of soft lenses, it increases their fragility as well. Rigid lenses generally give clearer vision. They can be marked to show which lens is for which eye. They don't rip or tear, so they're easy to handle. Also, rigid lenses don't absorb chemicals, unlike soft lenses, which Saviola says are like sponges. "They'll suck up any residues on your hands--soap, lotion, whatever." Both soft and rigid lenses offer bifocal correction. In some models, each lens corrects for near and distance vision. In others, one lens is for near vision, and
the other is for distance.Middle-aged people who have good distance vision but need help for reading can get a monovision reading lens for oee eye. Soft lenses additionally come as disposable products (defined by FDA as used once and discarded)or as planned-replacenent lenses. With planned-replacement lenses,the practitioner works out a replacerent schedule tailored to each patient's needs,says Byron Tart,director of promotion and advertising policy at FDA's devices center."For patients who produce a higher level of protein in their eyes or dom't take as good care of their lemses,it night be healthier to replace the lenses more frequently,"he says. Some practitioners prescribe disposables as planned-replacement lenses.which are renoved,disinfected and reused before being discarded.Saviola cautions that lenses labeled 'disposable"don't come with instructions for cleaning and disinfecting.while those labeled specifically for planmed replacement do.Nhatever lenses your practitioner prescribes,be sure to ask for written instructions and follow then carefully. Very few people wear hard lenses,but they are available for people who have adapted to them and want then.Hard lenses are not the same as rigid gas-perneable lenses,since they do not allow oxygen transmission through the lens. Contacts Not for Everyone People with inadequate tearing (dry eye syndrome)usually cam't tolerate contacts,says Donna Lochner.chief of the intraocular and corneal implants hranch of FDA's devices center.In addition,Lochner says,"Severe nearsightedness often can't be corrected effectively with contact lenses." Saviola notes that certain working conditions,such as exposure to chemical funes,may be undesirable for contact-lens wearers.Contacts nay be ruled out by allergy to lens-care products or by corneal problens,such as a history of viral infection of the cornea."Extra caution,"he says,'should he exercised with diabetics,because they're susceptible to infection and have trouble healing." Cosmetic use of contacts is limited in childrem.Adolescence is the youngest age as a rule to consider coatact lenses,says Saviola,but some practitioners do
the other is for distance. Middle-aged people who have good distance vision but need help for reading can get a monovision reading lens for one eye. Soft lenses additionally come as disposable products (defined by FDA as used once and discarded) or as planned-replacement lenses. With planned-replacement lenses, the practitioner works out a replacement schedule tailored to each patient's needs, says Byron Tart, director of promotion and advertising policy at FDA's devices center. "For patients who produce a higher level of protein in their eyes or don't take as good care of their lenses, it might be healthier to replace the lenses more frequently," he says. Some practitioners prescribe disposables as planned-replacement lenses, which are removed, disinfected and reused before being discarded. Saviola cautions that lenses labeled "disposable" don't come with instructions for cleaning and disinfecting, while those labeled specifically for planned replacement do. Whatever lenses your practitioner prescribes, be sure to ask for written instructions and follow them carefully. Very few people wear hard lenses, but they are available for people who have adapted to them and want them. Hard lenses are not the same as rigid gas-permeable lenses, since they do not allow oxygen transmission through the lens. Contacts Not for Everyone People with inadequate tearing (dry eye syndrome) usually can't tolerate contacts, says Donna Lochner, chief of the intraocular and corneal implants branch of FDA's devices center. In addition, Lochner says, "Severe nearsightedness often can't be corrected effectively with contact lenses." Saviola notes that certain working conditions, such as exposure to chemical fumes, may be undesirable for contact-lens wearers. Contacts may be ruled out by allergy to lens-care products or by corneal problems, such as a history of viral infection of the cornea. "Extra caution," he says, "should be exercised with diabetics, because they're susceptible to infection and have trouble healing." Cosmetic use of contacts is limited in children. Adolescence is the youngest age as a rule to consider contact lenses, says Saviola, but some practitioners do
fit 9-to 11-year-olds."You may preseribe for a younger child who has the motor skills and responsibility to handle contact lenses." For some people who haven't been able to wear contacts and want to,implantable lenses may be an option in the future. Doctors are studying ring segments,"shaped like parentheses,"Lochner says, which are implanted in the cornea."They flatten out the cornea,changing the shape to give the correct optical power."Lenses that are implanted inside the eye are also being studied to correct refractive error,she says. Correcting vision is not the only use for contact lenses. Sone soft contacts are used as bandage lenses after photorefractive keratectoay laser surgery for nearsightedness.The surgery removes the outer cell layer of the cornea,creating a large abrasion on the eye."It's excruciatingly painful,Saviola says."if you doe't have a protective covering on the cormea after the anesthetic wears off..“ Collagen eye shields are used as bandage lenses to relleve pain from other abrasions or sores on the cornea.They dissolve in a couple of days. Comparison Shopping Companies that sell contact lenses corpete stiffly for business,offering discounts and premiums such as a second set free. But a discount for the lenses might not save you money if the price doesn't include other needed products and services,such as a thorough eye examination. lens-care kit,and follow-up visits to mke sure you're adapting.A moderate cost for a package that has everything you need may be the best deal. Before you mke an appointment,ask the practitioner these questions: Will you give ne my prescription?(You may want the prescription if you decide to go to another practitioner or order lenses from an alternate source.) What tests are included in the eye examination? What do you charge for the exanination,lenses.evaluation.fitting. lens-care kit,follow-up visits,and service agreements? What is your refund policy if I can't adapt to contact lenses?
fit 9- to 11-year-olds. "You may prescribe for a younger child who has the motor skills and responsibility to handle contact lenses." For some people who haven't been able to wear contacts and want to, implantable lenses may be an option in the future. Doctors are studying ring segments, "shaped like parentheses," Lochner says, which are implanted in the cornea. "They flatten out the cornea, changing the shape to give the correct optical power." Lenses that are implanted inside the eye are also being studied to correct refractive error, she says. Correcting vision is not the only use for contact lenses. Some soft contacts are used as bandage lenses after photorefractive keratectomy laser surgery for nearsightedness. The surgery removes the outer cell layer of the cornea, creating a large abrasion on the eye. "It's excruciatingly painful," Saviola says, "if you don't have a protective covering on the cornea after the anesthetic wears off." Collagen eye shields are used as bandage lenses to relieve pain from other abrasions or sores on the cornea. They dissolve in a couple of days. Comparison Shopping Companies that sell contact lenses compete stiffly for business, offering discounts and premiums such as a second set free. But a discount for the lenses might not save you money if the price doesn't include other needed products and services, such as a thorough eye examination, lens-care kit, and follow-up visits to make sure you're adapting. A moderate cost for a package that has everything you need may be the best deal. Before you make an appointment, ask the practitioner these questions: • Will you give me my prescription? (You may want the prescription if you decide to go to another practitioner or order lenses from an alternate source.) • What tests are included in the eye examination? • What do you charge for the examination, lenses, evaluation, fitting, lens-care kit, follow-up visits, and service agreements? • What is your refund policy if I can't adapt to contact lenses?
Bow many types and brands of contact lemses do you sell? Bow much do you charge for replacement leases? Asking questions about any new prescriptioe treatment is always a good idea. Like medicines,contact lenses provide benefits and pose risks.But even with the increased risk of corneal ulcers posed by extended-vear lenses,Saviola says this risk alone isn't emough to say the devices aren't safe and effective if properly used. "If people are informed,he says.then they're making a judgnent based on available information.That's the thing ve always struggle with.conveying enough information to people and having the practitioner convey enough information,so that the consuner can nake an inforned choice." Dixie Farley,who was on the staff of FIM Consumer for more than 13 years,retired fros federal service in fandary. We offer a mssive selection of discount contact lenses in both prescription and fashion formats Many people wear discount contact lenses mainly for the purpose of changing their eye color and not because they help them see better.with colored discount comtact lenses you can make your eye look like a cat's eye if you want, or change your eye color to match your outfit. As well as discount contact lenses we also offer eye exams at discount prices so come on inside the vision superstore Prosoft Contact Lenses The lenses feature a teal tint that rutes all background colors except optic yellow-the color of most tennis balls.Prosoft lenses feature "Competivision" technology froa Bolle.The lens improwes your ability to locate and hit fast-moving tennis balls,thus enhaneing your game.Prosoft lenses also have built-in U protection.ProSoft Information Gane face contact lenses by Nesley-Jessen/Ciba.Available in Yellow,Black,Grey. Orange,Light Blue,Dark Blue.Royal Blue,Green.Purple
• How many types and brands of contact lenses do you sell? • How much do you charge for replacement lenses? Asking questions about any new prescription treatment is always a good idea. Like medicines, contact lenses provide benefits and pose risks. But even with the increased risk of corneal ulcers posed by extended-wear lenses, Saviola says this risk alone isn't enough to say the devices aren't safe and effective if properly used. "If people are informed," he says, "then they're making a judgment based on available information. That's the thing we always struggle with, conveying enough information to people and having the practitioner convey enough information, so that the consumer can make an informed choice." Dixie Farley, who was on the staff of FDA Consumer for more than 13 years, retired from federal service in January. We offer a massive selection of discount contact lenses in both prescription and fashion formats Many people wear discount contact lenses mainly for the purpose of changing their eye color and not because they help them see better. with colored discount contact lenses you can make your eye look like a cat's eye if you want, or change your eye color to match your outfit. As well as discount contact lenses we also offer eye exams at discount prices so come on inside the vision superstore Prosoft Contact Lenses The lenses feature a teal tint that mutes all background colors except optic yellow - the color of most tennis balls. Prosoft lenses feature "Competivision" technology from Bolle. The lens improves your ability to locate and hit fast-moving tennis balls, thus enhancing your game. Prosoft lenses also have built-in UV protection. ProSoft Information Game face contact lenses by Wesley-Jessen/Ciba. Available in Yellow, Black, Grey, Orange, Light Blue, Dark Blue, Royal Blue, Green, Purple
Toric contact lenses mnufactured by Ciba/Vesley Jessem.This is a conventional daily-vear lens for astigmatism. Proper Care Gives Safer Wear Follow,and save.the directions that come with your lenses.If you didn't get a patient information booklet about your lenses,request it from your eye-care practitioner. Use only the types of lens-care enzyme cleaners and saline solutions your practitioner okays. Be exact in following the directions that cone with each lens-care product. If you have questions,ask your practitioner or pharmacist. Wash and rinse your hands before handling lenses.Fragrance-free soap is best. .Clean.rinse and disinfect reusable lenses each time they're removed,even if this is several times a day. Caring for Contact Lenses Clean,rinse and disinfect again if storage lasts longer than allowed by your disinfecting solution. Clean,rinse and air-dry the lens case each tine you renove the lenses.Then put in fresh solution.Replace the case every six moaths. Get your practitioner's okay before taking medicines or using topical eye products,even those you buy without a prescription. Remove your lenses and call your practitioner right away if you have vision changes,redness of the eye.eye disconfort or pain,or excessive tearing. Visit your practitioner every six months (more often if needed)to catch possible problens early. 号atch0ut: Never use saliva to vet your lenses
Toric contact lenses manufactured by Ciba/Wesley Jessen. This is a conventional daily-wear lens for astigmatism. Proper Care Gives Safer Wear • Follow, and save, the directions that come with your lenses. If you didn't get a patient information booklet about your lenses, request it from your eye-care practitioner. • Use only the types of lens-care enzyme cleaners and saline solutions your practitioner okays. • Be exact in following the directions that come with each lens-care product. If you have questions, ask your practitioner or pharmacist. • Wash and rinse your hands before handling lenses. Fragrance-free soap is best. • Clean, rinse and disinfect reusable lenses each time they're removed, even if this is several times a day. • Clean, rinse and disinfect again if storage lasts longer than allowed by your disinfecting solution. • Clean, rinse and air-dry the lens case each time you remove the lenses. Then put in fresh solution. Replace the case every six months. • Get your practitioner's okay before taking medicines or using topical eye products, even those you buy without a prescription. • Remove your lenses and call your practitioner right away if you have vision changes, redness of the eye, eye discomfort or pain, or excessive tearing. • Visit your practitioner every six months (more often if needed) to catch possible problems early. Watch Out: • Never use saliva to wet your lenses
Never use tap water.distilled water,or saline solution made at hone with salt tablets for any part of your lens care.Use only commercial sterile saline solution. .Never mfx different brands of cleaner or solution. Never change your lens-care regimen or products without your practitioner's okay. Never let cosnetic lotions,creams or sprays touch your lenses. .Never wear lenses when swiming or in a hot tub. Never wear dafly-wear lenses during sleep,not even a nap. Never wear your lenses lomger than prescribed by your eye-care practitioner
• Never use tap water, distilled water, or saline solution made at home with salt tablets for any part of your lens care. Use only commercial sterile saline solution. • Never mix different brands of cleaner or solution. • Never change your lens-care regimen or products without your practitioner's okay. • Never let cosmetic lotions, creams or sprays touch your lenses. • Never wear lenses when swimming or in a hot tub. • Never wear daily-wear lenses during sleep, not even a nap. • Never wear your lenses longer than prescribed by your eye-care practitioner