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Topic: Orthokeratology

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	Orthokeratology - Wikipedia, the free encyclopedia
		Orthokeratology (Ortho-K) is the use of rigid gas-permeable contact lenses, normally worn only at night, to improve vision through the reshaping of the cornea.
		It is presumed that the lenses used in orthokeratology reshape the cornea by moving the epithelial cells that cover the surface of the cornea.
		Orthokeratology lenses are made by several companies, using one of two FDA approved technologies.
	en.wikipedia.org /wiki/Orthokeratology (742 words)

	Eyesight Associates - Medical Info
		Orthokeratology may be able to provide you with vision that is independent of glasses or contact lenses until you are old enough to undergo refractive surgery.
		Orthokeratology lenses are worn during sleep and removed in the morning.
		The orthokeratology lenses flatten the central 6 to 7 millimeters of the cornea.
	www.eyesightassociates.com /info-Orthokeratology.html (1046 words)

	[No title]
		Orthokeratology is a process which uses specially designed rigid contact lenses to temporarily reshape the corneal contour.
		The purpose of orthokeratology is to reduce or modify myopia or astigmatism by applying rigid gas permeable (RGP) lenses which have a curve that is flatter than the cornea.
		Orthokeratology has promise but further research is necessary to evaluate such factors as the predictability of refractive error reduction, refractive error stability over time, and overnight retainer lens wear.
	www.aaopt.org /userfiles/imagesPOSITION_PAPERS_CL/img_371933_Orthokeratology_Position_Paper.doc (2097 words)

	Patient's Guide to Orthokeratology
		Keep in mind that the goal for every orthokeratology patient may not be to be completely independent of lenses during their waking hours.
		In the hands of a skilled doctor of orthokeratology it is possible to significantly reduce your dependence on glasses and contact lenses during your waking hours, It is best to think of this procedure as reducing your dependence upon glasses and contact lenses with the end result of im-proving your unaided vision.
		Orthokeratology should not be thought of as a guarantee to eliminate your need for glasses or contact lenses, but rather as a way to improve vision and reduce your dependency on glasses and/or contact lenses.
	www.drtuckerandassociates.com /orthok/chap9.html (961 words)

	www.AfterLasik.com - Orthokeratology - Ortho-K Part 1
		In orthokeratology, contact lenses are used to temporarily reshape the clear front covering (cornea) of the eye to alter light rays and change where focus occurs within the eye to achieve sharper vision.
		Orthokeratology (ortho-k), which has been practiced since the 1960s, is a non-surgical procedure in which we use special contact lenses to gently and gradually reshape the surface of the eye.
		Orthokeratology or ortho-k lenses, using rigid gas permeable lens materials, should not be confused with the old hard contact lenses made of polymethylmethacrylate that did not allow oxygen to pass through to the eye.
	www.afterlasik.com /Orthokeratology_-_Ortho-K.html (539 words)

	Guide to Understanding Orthokeratology from Dr. Brent Ostoich.
		Orthokeratology is a non-surgical contact lens procedure used to reduce or eliminate myopia (nearsightedness) and astigmatism by temporarily changing the curvature of the cornea.
		Orthokeratology contact lenses for your eye are similar to orthodontics, or braces for your teeth.
		Orthokeratology flattens the shape of the cornea during wear, resulting in sharper vision while not wearing the lenses.
	www.ostoicheye.com /orthokeratology.html (354 words)

	Berkeley Orthokeratology Study, The [NEI Clinical Studies]
		To evaluate the relative safety of orthokeratology, primarily by assessment of changes in central corneal thickness, astigmatism, visual acuity, endothelial cell density, induced corneal edema, and epithelial staining.
		Advocates of orthokeratology claimed that corneal changes could be induced in a predictable fashion, were often permanent, and occurred without causing any adverse effects to the cornea.
		Orthokeratology produces modest reductions in myopia; however, the effect will not persist without continued lens wear and therefore is of limited clinical value in permanently reducing myopia.
	www.nei.nih.gov /neitrials/static/study22.asp (1044 words)

	Orthokeratology: The bare facts Optometric Management - Find Articles
		From a topographic viewpoint, both orthokeratology and refractive surgery change the normal prolate corneal geometry to an oblate shape, thus reducing the eye's axial length and subsequently improving the focus for myopes.
		Orthokeratology is thought to only affect corneal epithelial thickness and upon discontinuation of the procedure the central corneal thickness returns to normal.
		Orthokeratology in children as young as eight years is approved and because myopia at this age is still developmental, the effects are more proactive as a mechanism to reduce a patient's overall nearsightedness.
	www.findarticles.com /p/articles/mi_qa3921/is_200305/ai_n9261195 (770 words)

	EYE INFORMATION > ORTHOKERATOLOGY (Site not responding. Last check: 2007-11-02)
		Orthokeratology (or Ortho-K) is the programmed use of specially designed contact lenses to improve unaided vision by reshaping the cornea (front surface of the eye).
		Orthokeratology as we know it today was first used in the early 1960's.
		Orthokeratology lenses are designed to deliberately make changes to corneal shape (they flatten the cornea) so that people who are short-sighted are able to see distant objects more clearly.
	www.cclru.org /eye_information/orthokeratology.asp (455 words)

	[No title]
		Orthokeratology is a therapeutic procedure using specialized rigid gas permeable contact lenses to gently reshape the cornea.
		Orthokeratology is used to treat myopia (nearsightedness), astigmatism and, in some cases, hyperopia (farsightedness).
		Orthokeratology is a non-surgical procedure and therefore does not have the risks associated with surgery.
	www.genevaopt.com /WhatsNew.htm (834 words)

	Orthokeratology Society of Australia
		Orthokeratology is the “reduction, modification or elimination of a refractive error by the programmed application of contact lenses”.
		Currently orthokeratology is being used in the control of moderate myopia (shortsightedness), however new developments mean that soon we will be able to treat astigmatism and perhaps hyperopia (longsightedness).
		Orthokeratology is currently practised by specialist contact lens practitioners all around Australia and New Zealand.
	www.osa.net.au /index.html (179 words)

	Orthokeratology (Site not responding. Last check: 2007-11-02)
		Orthokeratology (ortho-K) is a nonsurgical system of treating myopia(nearsightedness) and astigmatism with a sequential series of specialized contact lenses that gradually flatten the cornea.
		To understand how orthokeratology works, it is first necessary to understand the visual function of the eye.
		Orthokeratology is a controversial procedure, according to some eye doctors.
	www.visionrx.com /library/enc/enc_orthokeratology.asp (664 words)

	Virginia Orthokeratology Eye Doctors
		Orthokeratology is a safe, non-surgical contact lens procedure to reduce or eliminate blurred vision caused by nearsightedness and astigmatism.
		In the same sense-that teeth may be straightened by the use of braces, these structural irregularities of the eye (refractive errors), can be reduced or eliminated by the use of contact lenses.
		Orthokeratology lenses are made of highly breathable materials and new designs that promote corneal change.
	www.contacts-vision.com /orthokeratology.asp (883 words)

	Orthokeratology
		Orthokeratology is a technique using contact lenses, much like orthodontic braces, to reduce a patients nearsighted prescription.
		The contact lenses used in orthokeratology are similar to regular contact lenses, except that they are designed to compensate for blurred sight and make modifications in the shape of the cornea.
		Final results determining the effects on eye tissue will not be available for years, but preliminary reports from clinicians in private practice would indicate that orthokeratology is harmless when it is conducted by competent practitioners while thoroughly supervised.
	www.goldenvisionclinic.com /orthokeratology.htm (325 words)

	ORTHOKERATOLOGY
		• In orthokeratology the central cornea flattens and the peripheral cornea steepens
		Orthokeratology is experiencing a rebirth as a refractive surgery alternative.
		Orthokeratology produces the desired changes in certain individuals but consider the risk-to-benefit ratio.
	www.umsl.edu /~optebenn/orthok.html (372 words)

	Orthokeratology Contact Lenses Can Cause Permanent Vision Loss in Children (Site not responding. Last check: 2007-11-02)
		Orthokeratology is a controversial, nonsurgical option for correcting the refractive error myopia, or nearsightedness.
		Orthokeratology was first developed by optometrists during the 1960s.
		However, the study states the role of orthokeratology in arresting or slowing the progression of refractive errors in children, and its long-term effects, are not clear.
	www.pslgroup.com /dg/2438fa.htm (771 words)

	OrthoKeratology
		Dr. Roger Tabb of the Beaverton Optometric Group is known internationally for his contributions to the field of orthokeratology.
		Before ordering the orthokeratology contact lenses, topographical photos of the corneas and pachometry (measuring the thickness of the cornea) must also be performed.
		The cost of orthokeratology includes this initial exam, the required testing, and the follow-up appointments for the first three months.
	www.beavertonoptgroup.com /orthokeratology.htm (896 words)

	Contact Lens Spectrum
		At the one-month visit, most orthokeratology changes to the cornea had taken place and were stabilized by the three-month visit.
		The task of trying to find out if orthokeratology has the same effect as rigid contact lenses suffers from not only the same problems but also from determining exactly what the refraction really is. Successful and happy patients will not give up their lenses to allow the cornea to return to its natural shape.
		He has lectured on orthokeratology extensively in Asia and Australia and is head of clinical research for the DreamLens in Taiwan.
	www.clspectrum.com /article.aspx?article=12316 (1491 words)

	Orthokeratology - correct your vision without a surgery (Site not responding. Last check: 2007-11-02)
		Orthokeratology is a non-surgical procedure intended mainly for mild to moderately nearsighted patients who may also have small amounts of astigmatism.
		Orthokeratology lenses are a good option for young people whose nearsightedness (myopia) is advancing with time.
		Modern materials, manufacturing and the instruments used to take the necessary measurements for lens design have made orthokeratology much more precise and predictable than it was years ago.
	www.fivepointseyecare.com /orthok1.htm (675 words)

	Orthokeratology
		Orthokeratology is a method used to help correct vision.
		The goal of orthokeratology is to reshape the cornea - to flatten it a bit basically - so your eyes can focus light the way it should.
		With orthokeratology this is done by wearing specially made rigid gas permeable (RGP) contacts, usually at night while you sleep.
	www.ideasforwomen.com /health/contacts-orthokeratology.php (998 words)

	FAQ's - Dr. Michael Feldman OD FIOS - The Contact Lens Center of Lynbrook - Orthokeratology - Optometrist and ...
		While Orthokeratology can help most individuals, including those with astigmatism, moderately high myopia and in some cases, even hyperopia (far-sightedness) improve their vision, the procedure is often most effective for those prescriptions falling within a specific range.
		Orthokeratology normally costs less than refractive eye surgery; does not involve post-operative pain; nor does it leave corneal hazing or scarring as is often the case with surgery.
		Additional information as well as a consultation to evaluate how Orthokeratology might benefit you can be obtained by contacting the office of Dr. Michael A. Feldman and Associates at the Contact Lens Center of Lynbrook at (516) 887-2751 for an appointment.
	www.contactorthok.com /lcl-faq.htm (661 words)

	Orthokeratology (Ortho-k) - Non-Surgical Corneal Reshaping
		It's called orthokeratology, or ortho‑k, and it is available throughout the country.
		Orthokeratology is for people of any age who are nearsighted.
		Each eye care practitioner determines his or her fee for orthokeratology, which is based on both time and lens costs.
	www.allaboutvision.com /contacts/orthok.htm (1445 words)

	Contact Lens Spectrum
		As a specialized orthokeratology practitioner for 31 years, I have used many orthokeratology designs and systems in my practice.
		Within one month of treatment with orthokeratology lenses, he achieved 20/20 vision and he passed the flight school vision test.
		As an experienced practitioner who has used most orthokeratology systems for over 30 years, I found that the Vipok inventory system was simpler and more accurate than all other orthokeratology lens systems.
	www.clspectrum.com /article.aspx?article=12387 (1147 words)

	Orthokeratology: What's New?
		Many practitioners routinely perform orthokeratology on children as the FDA has not expressly forbidden such use, though it has not approved that indication for labeling.
		One of the great advantages of orthokeratology over surgery is that it is reversible: if the patient doesn’t like what you’ve done it will go away when lenses are removed.
		One chat participant says the most common response he gets to his orthokeratology presentation is, "Why haven’t I heard about this before?" Although fees are relatively high, patients find it a bargain at about half to two-thirds the cost of refractive surgery.
	www.revoptom.com /archive/issue/online10.htm (1367 words)

	Orthokeratology
		It is only very recently however, that advances in materials, design and manufacturing technology have made Orthokeratology a viable option for a wider segment of the population.
		Orthokeratology uses a highly oxygen permeable contact lens that corrects your nearsightedness by gently reshaping the surface of the cornea of your eye while you sleep.
		Orthokeratology is a totally non-invasive procedure-no surgery is performed.
	www.4youreyesonly.ca /Orthokeratology.asp (436 words)

	Orthokeratology
		According to the British Orthokeratology Society the procedure works best for people who are short sighted up to about –5D of myopia with no more than –1.50D of astigmatism.
		If the ‘Sph’ box is –5.00 or less and the ‘Cyl’ box is –1.50 or less you may be suitable for orthokeratology and if you are interested we recommend that you consult your optometrist to discuss this procedure.
		Your optometrist will advise you about this in more detail, and one of the advantages of orthokeratology is that it is reversible, so if you don’t like the effect you can return to the status quo.
	www.college-optometrists.org /index.aspx/pcms/site.Public_Related_Links.Eye_Health_Issues.Orthokeratology (329 words)

	Guidance for Premarket Submissions of Orthokeratology Rigid Gas Permeable Contact
		If the material to be used for the orthokeratology lens is obtained from another source, a letter of reference may be obtained from the material supplier.
		The intended purpose of orthokeratology is the reduction of myopic refractive errors so those individuals may reduce the need for corrective lenses for functioning.
		It would be helpful for practitioners of orthokeratology to know what are the minimum and maximum wearing schedules necessary in order to maintain the reduction in refractive error with subsequent improvement in visual acuity that was achieved while undergoing orthokeratology.
	www.fda.gov /cdrh/ode/guidance/1134.html (3083 words)

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