Since in patients with keratoconus the structure of the cornea is not strong enough, they cannot be good candidates for corneal laser refractive surgical procedures such as PRK, femto-LASIK or femto-SMILE. Fortunately, advances in ophthalmology and the evolution in the use of intracorneal ring segments, or INTACS, have provided the opportunity to correct refractive errors in keratoconus patients and improve their vision with or without glasses.