Ortho-K can be an effective solution for adults experiencing myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. It can be particularly beneficial for individuals who experience discomfort or dryness with traditional contact lenses or those who are not suitable candidates for refractive surgery. The lenses are worn at night, providing the freedom from corrective eyewear during the day, which can be a significant lifestyle advantage for those involved in sports, or those who work in environments where glasses or daytime contacts are inconvenient.