Orthokeratology: The Science Behind Overnight Vision Correction

What Orthokeratology Is

Orthokeratology, commonly known as 'ortho-k,' involves the use of specially designed rigid gas-permeable contact lenses that are worn overnight. These lenses reshape the cornea by applying gentle pressure to specific areas of the eye’s surface.

The goal is to temporarily alter the shape of the cornea so that light focuses correctly on the retina, thereby improving vision without the need for glasses or traditional daytime contact lenses.

How Orthokeratology Works

During sleep, the ortho-k lenses gently flatten the central region of the cornea. This process is achieved through a combination of mechanical pressure and the movement of the eyelids over time.

Upon waking and removing the lenses, the reshaped cornea allows light to focus more accurately on the retina, potentially providing clear vision for several hours or even an entire day.

Why It Matters

Orthokeratology offers a non-invasive alternative to refractive surgeries like LASIK. It can provide temporary vision correction without the risks and recovery times associated with surgical procedures.

Moreover, it allows individuals who are not suitable candidates for laser surgery due to various factors such as thin corneas or high myopia, an effective way to correct their vision.

Real-World Applications

Ortho-k is particularly useful for children and young adults who are still growing. It can help manage myopia progression in these individuals by providing clear vision without the need for glasses or contact lenses during waking hours.

It also benefits athletes, pilots, and others whose professions require clear vision without the use of corrective lenses.

Frequently asked questions

Try it live

Everything above runs in your browser — open Orthokeratology Overnight Lens Corneal Reshaping and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.