Significance: The Fitting of Orthokeratology in the United States (FOKUS) survey provides information about the US orthokeratology market. This independent survey is the first to attain detailed assessment of the orthokeratology market.
Purpose: This study aimed to develop and administer a survey to eye care providers in the United States who are managing orthokeratology patients and those who are not, to determine a profile of prescribers, patients, and overall market.
Methods: The FOKUS survey was administered and distributed online. Outcome measures of the FOKUS survey involved general categories of (1) practice and practitioner profiles, (2) clinical prescribing patterns, (3) patient profile, (4) products and marketing, (5) fees, and (6) market size and growth.
Results: The number of eye care providers who are actively fitting and managing orthokeratology patients in the United States is approximately 3000. A total of 545 responded to the survey; 283 reported that they were actively fitting orthokeratology. Furthermore, 68% of respondents prescribed orthokeratology with the intent of managing myopia, 53% monitor axial length, and 61% start orthokeratology patients at 13 years or younger. The mean number of years a patient wears orthokeratology is 7.8 years. A commonly reported complication with orthokeratology is corneal staining. Microbial keratitis is rarely or never seen by 86% of respondents. Of those currently fitting, 56% anticipate growth of orthokeratology fitting over the next 12 months. Of those not currently fitting orthokeratology, 46% plan to start within 2 years.
Conclusions: Orthokeratology represents a small but growing segment of the US contact lens market. The number of practitioners actively prescribing and fitting orthokeratology in the United States is approximately 3000 with high potential for growth within the next 2 years. Results of the FOKUS survey are relevant to practitioners currently fitting or considering orthokeratology, manufacturers, educators, and researchers as baseline for future orthokeratology market assessment.
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http://dx.doi.org/10.1097/OPX.0000000000001911 | DOI Listing |
Cont Lens Anterior Eye
December 2024
Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai 200031, China; NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai, 200031, China; Shanghai Research Center of Ophthalmology and Optometry, Shanghai 200031, China; Shanghai Engineering Research Center of Laser and Autostereoscopic 3D for Vision Care (20DZ2255000), China. Electronic address:
Purpose: Based on ideal outcomes of corneal topography following orthokeratology (OK), an innovative machine learning algorithm for corneal refractive therapy (CRT) was developed to investigate the precision of artificial intelligence (AI)-assisted OK lens fitting.
Methods: A total of 797 eyes that had been fitted with CRT lenses and demonstrated good lens centration with plus power ring intact in their topography were retrospectively included. A comprehensive AI model included spherical refraction, keratometry readings, eccentricity, corneal astigmatism, horizontal visible iris diameter, inferior-superior index, surface asymmetry index, surface regularity index and 8-mm chordal corneal height difference.
Cont Lens Anterior Eye
December 2024
College of Health and Life Sciences, Aston University, Birmingham, United Kingdom.
Purpose: To investigate orthokeratology-related diurnal variations in visual acuity, contrast sensitivity, mesopic (twilight) vision, and glare sensitivity, and to verify compliance with requirements for driver licensing.
Methods: In this prospective, multicenter, controlled study, fifty myopic (range, -1.00 to -4.
Cont Lens Anterior Eye
November 2024
Department of Ophthalmology & Clinical Center of Optometry, Peking University People's Hospital, Beijing 100044, China; College of Optometry, Peking University Health Science Center, Beijing, China; Eye Disease and Optometry Institute, Peking University People's Hospital; Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases. Electronic address:
Background: To assess the predictive value of pretreatment corneal elevation asymmetry vector (CEAV) for severe orthokeratology (Ortho-k) lens decentration (LD) in Chinese myopic adolescents.
Methods: A retrospective analysis of 247 myopic participants over one year employed a novel MATLAB algorithm to calculate CEAV and precise LD vector. Subjects were categorized into mild (<1 mm) and severe (≥1 mm) yearly averaged LD (YALD) groups.
Cont Lens Anterior Eye
November 2024
Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China. Electronic address:
Jpn J Ophthalmol
November 2024
Department of Ophthalmology, Institute of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan.
Purpose: To investigate the incidence of microbial keratitis among Japanese patients wearing orthokeratology (ortho-k) lenses STUDY DESIGN: Retrospective multicenter study METHOD: This study was conducted at 4 hospitals in Japan and involved 1438 patients who had been prescribed ortho-k lenses and had worn them for at least 3 months. Data on patient demographics, lens characteristics, lens care systems, and presence of microbial keratitis were extracted from the medical records. Duration of ortho-k lens wear was calculated from the original fitting date to the patient's last visit, with the total years of lens wear used as person-years of lens wear.
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