Orthokeratology (Ortho-K): Reshaping Vision through Night Contact Lenses

Myopic individuals seek out the most convenient means of correcting their refractive defect. Most people with near-sightedness can lead a normal life with the help of corrective lenses like glasses or contact lenses. Some sports, like swimming in a pool, become more challenging under these conditions.

What is ortho-k?

Myopic patients who undergo orthokeratology, sometimes known as “ortho-k” for short, can benefit from daytime vision correction by wearing special lenses at night. When worn at night, these contact lenses subtly alter the eye, making it appear more like an emmetropic eye when removed in the morning.

This method does not include any risk or discomfort to the patient. The fact that orthokeratology can be undone is one of its primary benefits. Due to the temporary nature of its effects, the eye can go back to normal after stopping treatment. Therefore, the technique of correction can be altered as needed.

What are ortho-k contact lenses like?

Since orthokeratology contact lenses are tailored to each individual eye, no two pairs will ever look exactly the same. Topography of the cornea can show whether or not it can be shaped using the ortho k Singapore method, and an analysis of the quality and resistance of the eye components can show whether or not they are acceptable for receiving the treatment.

Orthokeratology contact lenses are custom-made using a mold that incorporates corneal topography to ensure that the lenses apply pressure where it is most effective throughout the night. They are made of a durable substance, making the lenses sturdy, and a permeable one, allowing oxygen to reach the eye.

How do night contact lenses work?

The cornea of the eye can easily adapt to the mild pressure applied by ortho-k treatment lenses. Because of its malleability, this amount of compression is sufficient to alter its curvature and flatten it. The shift is subtle enough that you won’t feel it when you use them.

Myopic eyes, which are abnormally long or curved, concentrate in front of the retina, hence the need for corrective lenses. The cornea becomes more convex with use, allowing the eye to concentrate light on the retina. This allows you to see clearly from far away.

It may take several days, or even weeks, of treatment for the eye to be totally emmetropic throughout the day, as the eye cannot change from one day to the next. Disposable contact lenses should be used during this phase to compensate for the disparity in prescription strength.

Who is ortho-k treatment for?

Although astigmatism, farsightedness, and presbyopia can also be corrected with contact lenses designed for nighttime usage or spectacles fine eyewear, nearsightedness is the most common condition treated with these lenses. Ortho-k treatments are more efficient and quicker when the graduation is lower. At several diopters, though, it is still quite effective, albeit slower.

People who participate in frequent water activities or who have trouble tolerating other therapies may benefit from orthokeratology. Moreover, it is quite efficient at halting the progression of myopia in children older than 6 and in teenagers, hence preventing the development of high myopia in adulthood.

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