Consult with your eye care doctor to determine this. Patients, who have had the most benefit from Intacs have been diagnosed with keratoconus, are 18 years old or over, no significant corneal scarring, have minimal thinning (no less than 450 microns thick), and are looking to improve fit or vision with contact lenses and/or glasses or potentially be considered for vision correction surgery (typically with an ICL) to get the best level of vision without glasses or contacts.