Is it necessary for corneal reshaping surgery to be within 500 diopters?
Hello, doctor.
I heard that orthokeratology is most effective for myopia within 500 degrees, but my myopia is over 600 degrees.
I would like to undergo orthokeratology.
Will it be effective for me? How many degrees can it reduce? Is there a possibility of myopia returning like after laser surgery? Thank you!
Xiao Hua, 10~19 year old female. Ask Date: 2005/04/08
Dr. Ke Meilan reply Ophthalmology
Hello: Orthokeratology is effective for over 600 degrees; as long as you don't wear them for two months, the prescription will return to the original degree.
Sincerely, Dr.
Mei-Lan Ke, Ophthalmology Department.
Reply Date: 2005/04/08
More Info
Orthokeratology (Ortho-K) is a non-surgical procedure that involves the use of specially designed gas-permeable contact lenses to reshape the cornea temporarily. This method is primarily used to correct myopia (nearsightedness) and is particularly effective for individuals with mild to moderate myopia, typically up to around -6.00 diopters. However, your case of over 600-diopter myopia presents some challenges.
1. Effectiveness for High Myopia: While Ortho-K can provide significant vision correction for many patients, its effectiveness tends to diminish as the degree of myopia increases. For individuals with myopia greater than -6.00 diopters, the results may not be as predictable or effective. Some studies suggest that patients with higher levels of myopia may experience less corneal flattening and, consequently, less improvement in visual acuity. Therefore, while it is possible that you may achieve some degree of vision correction, it is unlikely to be as substantial as it would be for someone with lower myopia.
2. Potential Reduction in Myopia: The amount of myopia reduction achieved through Ortho-K varies from person to person. Some patients may experience a reduction of a few diopters, while others may see little to no change. It is essential to have realistic expectations and understand that Ortho-K is not a permanent solution; the effects last only as long as the lenses are worn regularly.
3. Risk of Regression: One of the concerns with Ortho-K, similar to laser eye surgery, is the potential for regression. This means that after discontinuing the use of the lenses, your myopia may gradually return to its original level. Unlike laser surgery, which permanently alters the cornea, Ortho-K relies on the continuous use of lenses to maintain the corneal shape. If you stop wearing the lenses, your cornea will revert to its natural shape, and your myopia will likely return.
4. Consultation with an Eye Care Professional: Given your high level of myopia, it is crucial to consult with an eye care professional who specializes in Ortho-K. They can perform a thorough examination of your eyes, assess the health of your cornea, and determine whether you are a suitable candidate for this treatment. They will also discuss alternative options, such as laser vision correction (LASIK or PRK), which may be more effective for your level of myopia.
5. Consideration of Other Factors: When considering Ortho-K, other factors such as your age, lifestyle, and overall eye health should be taken into account. Younger patients, particularly those with progressive myopia, may benefit more from Ortho-K as it can help slow the progression of myopia. However, for adults with stable prescriptions, the benefits may be less pronounced.
In conclusion, while Ortho-K may provide some benefits for individuals with high myopia, it is essential to have realistic expectations and consult with a qualified eye care professional to explore all available options. They can help you determine the best course of action based on your specific needs and circumstances.
Similar Q&A
Can Orthokeratology Lenses Prevent Myopia Progression?
Does wearing orthokeratology lenses help prevent the progression of myopia? Is it suitable for someone with 400 degrees of astigmatism? Thank you.
Dr. Wang Zhishun reply Ophthalmology
Currently, there is a substantial amount of literature indicating that orthokeratology lenses can help prevent the progression of myopia; however, they are more suitable for astigmatism not exceeding 3.00 diopters.[Read More] Can Orthokeratology Lenses Prevent Myopia Progression?
Understanding Risks and Success Rates of Orthokeratology for Myopia
I would like to inquire about the risks and success rates of orthokeratology. I have a prescription of -5.50 diopters with -1.25 astigmatism in my right eye and -4.50 diopters with -1.75 astigmatism in my left eye. Due to the need for prolonged reading, my myopia has been progres...
Dr. Wang Zhangji reply Ophthalmology
Hello! Corneal reshaping is not actually a surgery, and its complications are similar to those caused by contact lenses. Corneal reshaping needs to be maintained for a lifetime, but this can also be considered an advantage, as if you are dissatisfied one day, you can simply stop ...[Read More] Understanding Risks and Success Rates of Orthokeratology for Myopia
Can I Wear Prescription Glasses Over My Orthokeratology Lenses?
Hello, I have high myopia of about -800 diopters and astigmatism. I have been wearing orthokeratology lenses at night. Due to unsatisfactory correction, I also wear glasses with a prescription of -1.00 diopters during the day. Can I wear magnifying glasses during the day as well?
Dr. Wang Zhishun reply Ophthalmology
Hello, theoretically it is possible, but the timing needs to be well managed.[Read More] Can I Wear Prescription Glasses Over My Orthokeratology Lenses?
Understanding Orthokeratology: Is It Right for High Myopia and Astigmatism?
Is it suitable for a person who is six months away from turning 20 years old, with myopia of -7.00 diopters and astigmatism of -4.00 diopters, to wear orthokeratology lenses? If they start wearing them now, will it still help prevent further progression of myopia? Thank you.
Dr. Wang Zhishun reply Ophthalmology
Generally, by the age of 18, the eyeball has fully developed, and the prescription tends to stabilize, showing little increase. Your astigmatism exceeds 3.00 diopters, which may make you less suitable for wearing contact lenses.[Read More] Understanding Orthokeratology: Is It Right for High Myopia and Astigmatism?
Related FAQ
(Ophthalmology)
High Myopia(Ophthalmology)
Hyperopia(Ophthalmology)
Vision Correction For Myopia(Ophthalmology)
Laser Surgery For Myopia(Ophthalmology)
Lasik(Ophthalmology)
Astigmatism(Ophthalmology)
Diplopia(Ophthalmology)
Pseudomyopia(Ophthalmology)
Nyctalopia(Ophthalmology)