Any of the following conditions can make contact lens fitting and comfortable contact lens wear more challenging:

Keratoconus
Astigmatism
Dry eyes
Giant papillary conjunctivitis (GPC)
Post-refractive surgery (such as LASIK)
Presbyopia

If you have (or suspect you have) any of these conditions and you want to wear contacts, visit an eye care professional who specializes in contact lenses and welcomes hard-to-fit patients. Contact lens specialists usually are more aware of the latest contact lens technology and options than a general eye doctor. Many also use advanced equipment that can measure your cornea more precisely to achieve the best contact lens fit possible.