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Doctor insights on: Photorefractive Keratotomy

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Tell me the difference between photorefractive keratectomy vs radial keratotomy?

Tell me the difference between photorefractive keratectomy vs radial keratotomy?

Laser vs scalpel: Prk uses a laser to resurface and reshape the front of the eye to improve vision. Rk involves creating multiple radial incisions on the cornea in a symmetrical pattern to flatten the cornea. Prk is much newer and more reliable technology. Rk has many side effects such as regression, irregular astigmatism, and scarring. ...Read more

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Please advise what is the difference between photorefractive keratectomy vs radial keratotomy?

Please advise what is the difference between photorefractive keratectomy vs radial keratotomy?

Cutting v sculpting: Radial keratotomy (rk) is an older and rarely performed procedure that has side effects. The eye surgeon makes a series of radial cuts about 90% deep in the cornea to flatten it and reduce or eliminate myopia. Photorefractive keratectomy (prk) uses an excimer laser to reshape the cornea. It is done on the surface of the cornea as opposed lasik which is performed under a flap of cornea. ...Read more

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Can i perform my own radial keratotomy?

Can i perform my own radial keratotomy?

Yikes: You could numb your eye with medication so you could do this painlessly. But you have no ability to control the cutting instrument on yourself. The likelihood is that you would slice open your eye and need emergency surgery. Do not do this at home. Anyway, lasik has totally replaced radial keratotomy as a more predictable and safer therapy. ...Read more

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How long does the radial keratotomy take?

How long does the radial keratotomy take?

Quick: The actual surgery is very fast, often taking less than 5 minutes. However the measurements of the cornea to accurately perform radial keratotomy (rk) should take some time, up to 20-30 minutes to check corneal shape and thickness at various points on the eye surface. Rk has fallen out of favor and has been replaced in most cases with prk using the laser, or lasik. ...Read more

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Does radial keratotomy vision deteriorate?

Does radial keratotomy vision deteriorate?

Possible yes: Rk is almost never performed now because of the side effects which included regression, scarring, and irregular astigmatism. This was due to the fact that the human hand cannot make 8 or 16 perfectly symmetrical and identical incisions in the eye and that each incision would not heal exactly the same. Many patients with rk now have worse vision and many use contact lenses to treat astigmatism. ...Read more

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Is radial keratotomy a very common procedure?

Is radial keratotomy a very common procedure?

No: Rk was performed before laser refractive surgery was available. Although it was effective in a lot of people, the results were quite variable and over time many patients noted major changes in their prescriptions. Laser procedures are far more accurate, and treat the upper 10% of the cornea, rather than the nearly full thickness of it. ...Read more

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Is there any pain involved in a radial keratotomy?

Mild discomfort: Radial keratotomy is an older form of vision correction surgery that is rarely performed today. It involves making tiny incisions into the cornea in order to change its shape. While the procedure itself is painless, it is not uncommon for people to feel a "scratchy" sensation for a day or so after the procedure. Artificial tears can decrease the discomfort. Speak to a doctor about lasik/prk. ...Read more

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Can overcorrection by radial keratotomy be treated?

Can overcorrection by radial keratotomy be treated?

Yes: The common way is to use glasses or contact lenses. Laser vision correction can also work. See your ophthalmologist to discuss the various options with you. ...Read more

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Can radial keratotomy vision deteriorate throughout life?

Can radial keratotomy vision deteriorate throughout life?

Maybe: One of the long term problems with rk surgery is the lack of long term stability in some patients. Sometimes, their prescription keeps changing over time, usually making them become more far-sighted. There are some therapies available that may help. Consult a corneal specialist. ...Read more

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Did anything bad happen to the people who got radial keratotomy over the years, since it was long ago?

Did anything bad happen to the people who got radial keratotomy over the years, since it was long ago?

Possible yes: Rk is almost never performed now because of the side effects which included regression, scarring, and irregular astigmatism. This was due to the fact that the human hand cannot make 8 or 16 perfectly symmetrical and identical incisions in the eye and that each incision would not heal exactly the same. Many patients with rk now have worse vision and many use contact lenses to treat astigmatism. ...Read more

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Is it normal to need a keratotomy?

Is it normal to need a keratotomy?

No: Keratotomy means incision into the cornea. The most common form is lasik or prk, in which a laser enters the cornea and reshapes it. Astigmatism can be corrected with astigmatic keratotomy (ak). These are elective procedures and do not need to be performed. Certain conditions of the cornea can be treated with a keratectomy - removal of some or all of the cornea (corneal transplant). ...Read more

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How much does astigmatic keratotomy cost?

How much does astigmatic keratotomy cost?

Depends!: Depends on your surgeon and method. Using the diamond blade, most would charge about $1, 000!?! for femtosecond laser ak.... It is too new, $2, 000!?! i not a big believer of aks. I would rather use a more precise method like prk! ...Read more

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Is there something they will give me for anxiety when i'm doing a radial keratotomy?

Is there something they will give me for anxiety when i'm doing a radial keratotomy?

Yes, but: Patients may be given an oral sedative (valium, xanax, (alprazolam) ativan, etc.) either just before or immediately after corneal refractive surgery. I am more concerned as to whether you meant photorefractive keratomileusis (prk) which is performed by laser, rather than radial keratotomy (rk) - an older treatment using a blade. Rk is usually not performed anymore since prk and lasik are safer. ...Read more

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Could overcorrection by radial keratotomy be treated by lasik?

Could overcorrection by radial keratotomy be treated by lasik?

LASIK and RK: I personally would not recommend lasik in patients with previous rk. A better option would be prk (surface ablation). Of course, many patents with previous rk (which was performed in the 80's and early 90s) have early cataracts - and early cataract surgery can be performed which can help significantly improve vision. Please see your own doctor to discuss options. ...Read more

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Was radial keratotomy the original lasik procedure?

Was radial keratotomy the original lasik procedure?

No: Radial keratotomy (rk) was a precursor refractive surgery to lasik. In lasik, a circular flap is created and then lifted up to expose the corneal stroma. Then laser is applied and the flap replaced. In rk, radial cuts are made to create relaxing incisions to try and flatten the cornea. Late onset regression and scarring were the side effects. Current technology with lasers is better. ...Read more

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Where is a radial keratotomy usually done? At a hospital?

In the office: Rk is an old treatment for nearsightedness (myopia) that is rarely performed today. It has been replaced by lasik and prk, both of which are more precise and safer. All three procedures are normally performed in an office setting, and take only a few minutes to perform. ...Read more

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Can overcorrection from radial keratotomy be treated by lasik?

Usually: Overcorrection by lasik results in far-sightedness, requiring spex for everything! if the cornea is otherwise healthy, reduction or reversal of the over-correction is possible with lasik but can also be done by prk (no flap). ...Read more

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Could you have lasik done if you have had radial keratotomy before?

LASIK vs PRK: Most surgeons recommend against lasik in patients who have had radial keratotomy (rk). An alternative procedure - prk - which is laser on the surface of the cornea, is an option, and can achieve improvement in vision. Please discuss with your own doctor. ...Read more

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Looking for a specialist in cateract removal on post radial keratotomy pt ?

Looking for a specialist in cateract removal on post radial keratotomy  pt
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Cornea specialist: For cataract extraction after radial keratomtomy, i would recommend seeing a corneal specialist. There are many issues to consider at the time of surgery and you want someone who can handle anything that mag arise. ...Read more

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Can radial keratotomy be done again to correct "middle aged eyes"?

No: Radial keratotomy to begin with is now obselete and has been superseded by laser treatment (lasik, prk). You would like to have a procedure to re-establish the elasticity of your natural lens to allow near and far focus. Sorry but as part of the aging process, this function is lost. So radial keratotomy or laser treatment will not do this for you. ...Read more