title: Recurrent lens binding and central island formations in a fast-responding orthokeratology lens wearer.
abstract: A 12-year-old girl with a history of fast myopia progression underwent advanced orthokeratology (ortho-k) treatment and suffered from recurrent lens binding and central corneal staining. The problem could not be fixed by lens fenestration and refitting with a less aggressive lens (three-zone ortho-k) design. After refitting with a lower target advanced ortho-k lens, these complications were no longer occurring, and the amount of power reduction was greater than expected considering the target designed for the refitted lenses. During the following 15 months of ortho-k lens wear, there was no clinically significant change to her refractive error. The patient and her parents were happy with the outcome, although the refractive error was not totally eliminated and she still needed to wear spectacles for clear vision. Possible etiologies of the complications are discussed.
authors.affiliation: Department of Optometry and Radiography, The Hong Kong Polytechnic University, SAR, Hong Kong, China.
authors.forename: Wan  Sang
authors.initials: W
authors.lastname: Chui
authors.forename: Pauline
authors.initials: P
authors.lastname: Cho
mesh_terms: D002648:Child; D003261:Contact Lenses / Q000009:adverse effects*; D003315:Cornea / Q000473:pathology; D019781:Corneal Topography; D020878:Device Removal; D018450:Disease Progression; D004867:Equipment Design; D005260:Female; D006801:Humans; D009216:Myopia / Q000503:physiopathology* / Q000628:therapy*; D017755:Prosthesis Fitting; D019233:Retreatment; D013194:Staining and Labeling; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity