Fig. 2

Videokeratography classification scheme used for distinguishing between normal and keratoconus videokeratographs. Patients with an AB/SRAX pattern were considered as having subclinical keratoconus.

Videokeratography classification scheme used for distinguishing between normal and keratoconus videokeratographs. Patients with an AB/SRAX pattern were considered as having subclinical keratoconus.