title: Progress report on a post-radial keratotomy patient 20 years after surgery.
abstract: OBJECTIVE
  Patients who have received Radial Keratotomy (RK) often require custom rigid gas permeable (GP) contact lenses to correct residual refractive errors post surgery. This paper is a long-term extension of a case report originally published in 1988 describing the course of a post-RK patient fitted with ortho-K design GP lenses.
  
  
  METHODS
  Visual acuities (VA), corneal curvatures, and refractive errors were collected from both the patient's medical record and the original case report published in 1988. These data were then plotted on graphs to observe the long-term effects of RK and rigid contact lens wear.
  
  
  RESULTS
  Although there was substantial fluctuation in refractive errors, VAs, and corneal curvatures shortly following RK, the patient's long-term results post-RK have remained relatively stable for the past decade.
  
  
  CONCLUSIONS
  Although RK decreased our patient's myopia for about 6 diopters per eye, ortho-K appeared ineffective for our patient over the long term. It is important for practitioners to know the process involved in treating post-RK patients and to understand that large overall lens diameters, sometimes reverse geometry design, GP lenses with good edge lifts, often provide reasonable mechanical and physiological fits while optimizing visual outcomes for these patients.
authors.affiliation: Department of Ophthalmology, Jules Stein Eye Institute, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA 90095, USA. forister@jsei.ucla.edu
authors.forename: Julie F Y
authors.initials: JF
authors.lastname: Forister
authors.forename: Amy
authors.initials: A
authors.lastname: Sun
authors.forename: Barry A
authors.initials: BA
authors.lastname: Weissman
mesh_terms: D000328:Adult; D003261:Contact Lenses; D003315:Cornea / Q000473:pathology; D004867:Equipment Design; D005740:Gases; D006801:Humans; D007646:Keratotomy, Radial; D008297:Male; D009216:Myopia / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D054158:Orthokeratologic Procedures; D010539:Permeability; D011184:Postoperative Period; D012029:Refraction, Ocular; D013997:Time Factors; D017211:Treatment Failure; D014792:Visual Acuity
chemical_list: D005740:Gases