[Clinical study on treatment of secondary keratoconus with special designed rigid gas permeable contact lens].

Objective: To investigate the clinical effects of special designed rigid gas permeable contact lens (RGPCL) in the treatment of secondary keratoconus.

Methods: Retrospective study. The results of correction of secondary keratoconus by the RGPCL in 89 cases (102 eyes) at the Optometry & Ophthalmology Center were analyzed, including history, slit lamp microscope, computer assisted corneal topography, phoropter, corneal endothelial cell examinations and A-scan corneal thickness measurements.