Orthokeratology, also known as Ortho-K or corneal reshaping therapy, is a non-surgical treatment that uses specially designed contact lenses to temporarily reshape the cornea of the eye. The goal of Ortho-K is to correct vision problems, such as near-sightedness, farsightedness, and astigmatism, without the need for glasses or daytime contact lenses.
Orthokeratology lenses are made of a rigid, gas-permeable material that allows oxygen to flow through to the cornea. They are worn at night while sleeping and work by gently reshaping the front surface of the eye's cornea, flattening the central portion of the cornea to correct myopia or steepening the cornea's central portion to correct hyperopia.
Ortho-K lenses also correct astigmatism by reshaping the cornea's curvature to make it more spherical. This process works by redistributing the pressure on the cornea's surface, allowing the eye to focus light correctly on the retina.
