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    Prima Medical Center Saigon, Refractive and Lasik

    Ortho K – Contact lens treatment (soft, hard)

    8 January, 2024

    Ortho-K contact lenses are known as products that help improve refractive errors over a certain period of time. This product has been licensed for common use by the FDA since 2002. Below is detailed information by Prima Medical Center Saigon to help you better understand this product line.

    Prima Saigon: Ortho-K contact lenses are a solution for controlling refractive errors without surgery.

    Prima Saigon: Ortho-K contact lenses are a solution for controlling refractive errors without surgery.

    1. What are Ortho-K contact lenses?

    The origin of Ortho-K contact lenses dates back to the 1962s, when they were created by two doctors, Newton Wesley and George Jessen. Under the development of modern medicine, Ortho-K glasses were also researched and improved by Doctors May and Grand (1970) and Doctor Coon (1982).

    Up to now, Ortho-K contact lenses are known as one of the measures to help correct refractive errors and are quite commonly used.

    What are Ortho-K contact lenses?

    1.1 Uses

    Ortho-K contact lenses are not effective in treating refractive errors or reducing myopia as advertised on social networks.

    This product only has the effect of controlling progressive myopia, is highly effective and helps slow down the process of increasing myopia from 40%. However, if you stop using it, the refractive error will still return to its old state.

    1.2 Mechanism of action

    The mechanism of action of this Ortho-K contact lens is as follows: People with refractive errors only need to wear contact lenses to sleep for a minimum of 7 – 8 hours, when they wake up the cornea will be corrected and pressed down to 0 degrees. . At this time, the eyes are created with vision like a normal person without having to wear glasses or contact lenses.

    Unlike regular contact lenses, Ortho-K lenses are used at night (during sleep). Therefore, it is very suitable for young people in puberty or people at risk of rapidly increasing nearsightedness.

    1.3 Production materials

    Ortho-K contact lenses are made from Hydrogel, have high gas permeability, ensuring enough oxygen supply to the cornea during sleep, helping the cornea stay healthy.

    Ortho-K method is a treatment support method approved by the FDA (US Food and Drug Administration) and CE (European Commission), allowing use at all ages.

    1.4 How much do Ortho-K glasses cost?

    The price of Ortho glasses ranges from 15,000,000 VND – 25,000,000 VND/ pair of glasses. This fee does not include accessories such as: containers, cleaning solutions, artificial tears,…

    Ortho-K glasses are currently sold at Prima Medical Center Saigon

    Currently, Prima Saigon is having a promotion program for patients when coming for in-depth refraction examinations with Ortho-K glasses.

    2. Indications for using Ortho-K glasses

    Ortho-K (Orthokeratology) night contact lenses are used to support vision correction of refractive errors such as: nearsightedness, farsightedness, and astigmatism.

    The method of treating myopia with Ortho-K night contact lenses is suitable for people who have never had refractive surgery, specifically:

    • People with refractive errors aged 7 years and older (children old enough to cooperate well with parents and doctors during examination).
    • Young people, myopia < -6.00 diopters, astigmatism up to -2.50 diopters (astigmatism not exceeding 1/2 the degree of nearsightedness)
    • People with astigmatism do not exceed ½ degree of myopia. Used in children with high myopia to prevent dangerous complications due to myopia.
    • People with refractive errors but have low corrected vision. People with myopia use glasses to prevent the difference in myopia between the two eyes.
    • People with refractive errors do not want or are not eligible for surgery. Up to now, the Ortho-K method has been approved by the FDA for the treatment of myopia up to -6.00 Diop, but is usually most effective for myopia below – 4.50 Diop.
    • It can also treat astigmatism up to -2.50 Diopters, but the ideal astigmatism for best results is below -1.50 Diopters.

    Who can use Ortho-K glasses?

    Contraindicated in the following cases:

    • Ortho-K contact lenses are not suitable for people with dry eyes and people with allergies.
    • People who have had refractive surgery
    • The eye has inflammation in the anterior part of the eyeball.
    • Anterior segment and systemic diseases affecting the corneal conjunctiva.

    The glasses are specially designed to be worn at night (even while sleeping) and removed the next morning.

    Step 1: Prepare necessary items (mirror, cleaning solution,…)

    First you need to have all the tools such as: mirror, glasses cleaning solution, artificial tears, physiological saline for eye drops, glasses case, glasses removal tool and a clean sheet of paper towel spread on top. table.

    Step 2: Clean your hands thoroughly before wearing Ortho-K glasses

    When cleaning your hands, you need to remember to cut the tips of your nails short. Hands should be washed with soap and dried with a clean paper towel. Absolutely do not wipe your hands on towels or clothes, do not touch any other objects, and do not wear/remove glasses in the bathroom.

    Step 3: Gently clean the glasses before wearing

    Gently place the glasses in the palm of your hand and apply a sufficient amount of lens cleaning solution. Slowly smooth the glass from the center outwards to cover a full 360 degrees. Perform this operation continuously for 1 – 2 minutes (see attached video for details).

    Prima Saigon: Dr Thao Vo, Chief Medical Officer of Prima Saigon, is consulting a patient before Ortho-k assessment

    Prima Saigon: Dr Thao Vo, Chief Medical Officer of Prima Saigon, is consulting a patient before Ortho-k assessment

    Then, place the cleaned glasses on your dry hand. Any remaining solution in the palm of your hand will be wiped dry with a clean paper towel.

    Step 4: Place the glasses on the player’s fingertips and drop artificial tears

    After finishing the steps of cleaning Ortho-K glasses, place the glasses on the tip of your index finger and then drop 1 drop of artificial tears into the lens to create moisture.

    Step 5: Wear glasses before going to bed

    Use your non-dominant hand to hold your eyelids tightly. With your dominant hand, slowly place the glasses on your eyes from bottom to top.

    • Look down at your feet to create the most comfortable feeling.
    • Wear Ortho-K lenses overnight and remove them in the morning immediately after waking up.
    • Wear Ortho-K contact lenses before going to bed.

    Step 6: Remove Ortho-K contact lenses after waking up using a lens removal tool

    To remove glasses, you still clean your hands the same way as when wearing glasses.

    Before removing the Ortho-K lenses, place a drop of artificial tear in the eye and blink gently. Then use your hand to gently push the lower eyelid so that the eye drops can go into the middle of the lens. Blink gently until you feel the glasses move.

    Use your non-dominant hand to tighten both eyelids. With your dominant hand, hold the lens removal tool and place it on the bottom ⅓ of the glasses. Gently touch and slowly remove the glasses and place them in the palm of your hand.

    Step 7: Repeat the same steps to clean the glasses and store the glasses in the tray.

    To ensure safe hygiene for the next use, you should clean the glasses thoroughly before storing them in the tray. The steps are similar to when taking out the glasses.

     Things to know when using Ortho-K glasses

    Some issues you need to understand about the method of treating myopia with Ortho-K night contact lenses are as follows:

    1. Only use glasses while sleeping

    Ortho-k is a rigid contact lens designed to be used at night while sleeping to help realign the cornea. Lenses should not be used during the day like other soft contact lenses.

    2. Need to replace new Ortho-K glasses after 1 – 2 years

    The time to replace a new pair of Ortho-K glasses depends on the doctor’s prescription. However, it is best to replace it after 1 – 2 years of use or whenever the glass is dropped, cracked, or broken.

    3. If you stop using glasses, you can still have nearsightedness surgery

    After age 18, if you want, you can still have surgery to remove nearsightedness. You need to stop using glasses for 6 – 8 weeks for the cornea to stabilize to its original shape and refraction to stabilize, then the patient can have nearsightedness surgery when prescribed by the doctor.

    4. You may experience some symptoms such as dry eyes, red eyes,…

    Symptoms that may be encountered when using Ortho-K glasses include: watery eyes, dry eyes, eyes that are more sensitive to light, blurred vision, crusty eyes, red eyes, scratchy eyes,… These are all Temporary symptoms may decrease or disappear after drug treatment.

    If symptoms persist, patients need to stop using and go to Prima Medical Center Saigon for a health check.

    If symptoms persist, patients need to stop using and go to Prima Medical Center Saigon for a health check.

    If symptoms persist, patients need to stop using and go to Prima Medical Center Saigon for a health check.

    Symptoms may occur when using Ortho-K glasses: When using Ortho-K glasses, you may experience some symptoms such as dry eyes, red eyes,…

    5. Wearing Ortho-K glasses does not permanently remove nearsightedness

    When the patient stops wearing Ortho-K lenses every day, the nearsightedness will return to normal, so it is not a permanent treatment for nearsightedness. However, Ortho-K can still limit the increase in myopia in children.

    6. Regular eye examination with a specialist

    In order for the non-surgical myopia correction solution with Ortho-K glasses to be safe and effective, you need to strictly follow hygiene principles and closely monitor follow-up examination schedules by doctors at reputable eye hospitals. credit. Doctors will check the suitability of the glasses for your eyes, the progression of the corneal curve and prescribe the most suitable treatment.

    7. Surgery to correct nearsightedness after using Ortho-K glasses

    After Ortho-K treatment, you can still have surgery to correct vision. But to perform nearsighted surgery, you first need to stop applying the Ortho-K method for a period of time (it can take many months) as prescribed by your doctor so that the cornea returns to its original shape. before treatment.

    With myopia increasing, especially among students today, Ortho-K contact lenses are considered one of the options worth considering to control myopia without surgery. Hopefully with the information shared in this article, you will better understand Ortho glasses as well as make more suitable choices for your eyes.

    Our Lasik & Refractive Care Team

    If you need an eye assessment, please have a visit to Prima Medical Center Saigon

    • Address: 27 Ky Dong St, District 3, HCMC
    • Websitehttps://primahealth.vn/en/
    • Business Hours: 07:30 – 17:00 from Monday – Saturday
    • HOTLINE: 0919-209-039 or 1900 – 9115

    Prima Saigon recommends that clients should reserve their intended consultation at least three days before their visit for convenience and less waiting time.