[The long-term clinical effects of orthokeratology in high myopia children].

Objective: To investigate the long-term clinical effects of orthokeratology (ortho-k) in high myopia children with 5 years of follow-ups.

Methods: Prospective study. We chose 30 high myopia patients to wear ortho-k contact lenses (CLs) for controlling or delaying myopia progression from 2003.

[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.