Ortho K Lenses at Unionville Optometry

Ortho K Lenses Can Decrease Progression Of Myopia/Nearsightedness

Closeup of women putting in her contact lens

What Is Orthokeratology?

Utilizing Ortho K lenses, Orthokeratology (ortho-k) is the process of wearing a customized gas permeable contact lens only at night (while sleeping). Orhto k lenses gently reshape the front surface of the eye, known as the cornea. In the morning, after the user removes the lenses, they are able to see clearly for most of the day.

With very early orthokeratology dating back to the 1960’s, this treatment has been given various names over the years:

  • Ortho K lenses or OK Lenses
  • Overnight contact lenses
  • Corneal Refractive Therapy (CRT)
  • Corneal reshaping contact lenses
  • Gentle Shaping System
  • Corneal Moulding
  • Wave Front Corneal Moulding

With advances in technology, most OK lens users today find they are able to see properly without prescription glasses or contact lenses for one to two days after sleeping with the Ortho K lenses.

Book Your Lens Evaluation and Fitting
Contact Unionville Optometry or Call 905-477-4488

When Is Ortho K Prescribed?

The fitting of OK lenses is usually prescribed for the following:

  1. To slow the progression of myopia (nearsightedness) in children and teenagers.
  2. To correct refractive errors in adults and children such as myopia/nearsightedness and astigmatism.

OK lenses are an excellent option for children who are experiencing a progression of myopia/nearsightedness. Adults and children are good candidates for these types of lenses if they:

  • Are physically active with sports
  • Do not want to wear glasses during the day
  • Are unable to wear contact lenses
  • Or are not ready for more permanent Laser Eye Surgery
Hand with pen about to fill out an RX prescription
Female eye doctor examining a child's eyes

Do OK Lenses For Myopia Actually Work?

The result of orthokeratology will depend on your prescription, age, and treatment goals. Younger eyes mould faster, therefore children and teenagers can often achieve results in just a couple nights. Adults with higher prescriptions will typically take longer.

In many patients, orthokeratology can temporarily correct nearsightedness of up to -6.00 diopters of myopia. In order to maintain the results, you will need to continue using Ortho K lenses. When you stop wearing these lenses at night your vision will return to its original baseline.

During your initial orthokeratology evaluation, our Unionville Optometrists will discuss the potential outcome of your specific treatment plan.

What Should I Expect At My OK Lens Assessment & Am I A Candidate?

Patients will have a full eye exam with one of our doctors as well as imaging and measurement of corneal curvature to establish candidacy. Once confirmed, these diagnostic tests combined with a topographical map of the ocular surface, will generate custom Ortho K lenses specific to each patient.

Typically, patients will return for a second visit and spend time with our staff learning how to insert and remove their Ortho K lenses. This typically takes two to three 20-minute sessions and/or until patients are comfortable handling the Ortho-k lenses themselves.

Patients will be seen for follow-up appointments where refraction and imaging takes place to ensure optimal fit and vision.

An eye chart with a pair of eyeglasses on top of it.

Ortho K Lenses FAQs

Ortho-K lenses are custom-designed, rigid gas permeable contact lenses worn overnight. They gently reshape the cornea while you sleep, allowing you to see clearly during the day without glasses or traditional contact lenses.

Ortho-K lenses are suitable for individuals with myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. They are particularly beneficial for children and teenagers to slow the progression of myopia.

Many patients experience improved vision after just a few nights of wearing Ortho-K lenses. However, the time to achieve optimal vision varies depending on individual factors such as age, prescription strength, and corneal shape.

Yes, Ortho-K lenses are safe for children when properly fitted and monitored by an eye care professional. They offer a non-surgical option to manage myopia progression in young patients.

Yes, Ortho-K lenses can correct mild to moderate astigmatism by reshaping the cornea to improve visual clarity.

The vision correction achieved with Ortho-K lenses is temporary. To maintain clear vision, you need to wear the lenses every night. If you stop wearing them, your vision will gradually return to its original state.

The fitting process includes a comprehensive eye exam, corneal imaging, and mapping to create custom lenses tailored to your eye shape. Follow-up visits ensure proper lens fit and vision quality.

When used as directed, Ortho-K lenses are generally safe. However, improper handling or hygiene can lead to complications such as eye infections. It's essential to follow your eye care professional's instructions carefully.

Yes, adults can benefit from Ortho-K lenses, especially those with mild to moderate myopia or astigmatism. They offer a non-surgical alternative to traditional vision correction methods.

Ortho-K lenses provide a non-invasive, reversible alternative to LASIK surgery. While LASIK offers permanent vision correction, Ortho-K allows for temporary vision correction without the risks associated with surgery.

Yes, Ortho-K lenses can be used to correct mild to moderate hyperopia by reshaping the cornea to improve focus for near vision.

There is no specific age limit for using Ortho-K lenses. However, children and teenagers are often preferred candidates due to the potential to slow myopia progression.

Proper hygiene is crucial. Clean and disinfect your lenses as instructed, store them in a clean case, and replace them as recommended by your eye care professional to maintain eye health.

Individuals with dry eyes may still be candidates for Ortho-K lenses, but a thorough evaluation by an eye care professional is necessary to assess suitability and ensure comfort.

The cost of Ortho-K lenses varies depending on factors such as prescription strength, fitting complexity, and follow-up care. It's best to consult with Unionville Optometry for a personalized estimate.

Our Unionville Optometry Eye Doctors Are Also Members Of:

Schedule Your Ortho K Lens Fitting At Unionville Optometry

Unionville Optometry carries a full line of eye care products. Our Unionville Optometrists can evaluate your eye health and determine if OK soft contact lenses are right for you.

Send us an email or call our Unionville Optometry Orthokeratology clinic at 1-905-477-4488 to make an appointment with Dr. Mark, Dr. Krista, or Dr. Innamorato.

If you still have questions about Ortho K lenses, contact us online.

We also carry designer eyeglass frames and SkinCeuticals science-backed skin care products.