Reshaping the cornea is one way Sonik Vision's Optometrist can help to improve your vision. Corneal Refractive Therapy (CRT) is the process of gently reshaping the cornea while you sleep! Sonik Vision can provide custom contact lenses that you wear while sleeping. The lenses gently reshape the cornea at night and improve your vision during the day - without the need for daytime contacts or glasses. Though the effect is temporary, your vision should stay adjusted during your typical day. Sonik Vision is one of only a handful of optometrists in the country trained and licensed to provide Corneal Refractive Therapy - Service Bellaire, Houston, Southside Place, West University and the surrounding areas.