| Description | The simplest, most accurate Ortho-K lens fitting system ever! | The Euclid Systems Orthokeratology (oprifocon A) Contact Lenses are rigid gas permeable contact lenses used for orthokeratology, a process that temporarily corrects nearsightedness (myopia). The patient wears these lenses overnight and removes them | These are rigid gas permeable contact lenses used for corneal refractive therapy, a process that temporarily corrects nearsightedness (myopia). The patient wears the lenses overnight while sleeping and removes them upon wakening. During the day, | These are rigid gas permeable contact lenses used for corneal refractive therapy, a process that temporarily corrects nearsightedness (myopia). The patient wears the lenses overnight while sleeping and removes them upon wakening. During the day, | These are rigid gas permeable contact lenses used for corneal refractive therapy, a process that temporarily corrects nearsightedness (myopia). The patient wears the lenses overnight while sleeping and removes them upon wakening. During the day, |