title: Research in orthokeratology. Part II: Experimental design, protocol and method.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003261:Contact Lenses; D003315:Cornea / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D009907:Optometry / Q000295:instrumentation; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000628:therapy*; D012107:Research Design; D013997:Time Factors; D014792:Visual Acuity