Gifford KL, Gifford P, Hendicott PL, Schmid KL. Introduzione: La refrazione periferica relativa (RPR) misura lo stato refrattivo nella periferia retinica in relazione alla refrazione centrale comunemente misurata. La refrazione periferica di una persona miope è ipermetropica e si ipotizza...
Abstract: The prevalence of myopia and high myopia has significantly increased worldwide and in the United States. The serious implications of these trends are being recognized. Myopia is not just a minor inconvenience requiring vision correction with glasses or contact lenses,...
Purpose: To report a case of Mooren ulcer that developed in a pediatric patient wearing orthokeratology overnight contact lenses. Methods: Case report. Results: A 10-year-old boy was referred to our clinic because of progressive peripheral corneal ulcer in the right eye, despite the intensive use...
Purpose: To investigate the changes in the quality of life and behaviors in children before and after wearing orthokeratology lenses and to analyze the potential impact of orthokeratology lenses on children‘s quality of life, behaviors, and the progression of myopia. Methods: A total of 100 children receiving orthokeratology lenses in the People’s Hospital of Hebei Province...
Purpose: To assess the visual acuity and compliance with the use of orthokeratology lenses (OrthoK) in school children. Methods: A retrospective study was conducted to determine the education-related factors influencing the improvement in visual acuity in myopic students using OrthoK in five primary schools in Taiwan. Results: Of the 5,173...
Abstract Purpose To compare rates of myopia progression and adverse events between orthokeratology (OK) and soft contact lens (SCL) wearers over a 10‐year period in schoolchildren. Methods Medical records of consecutive patients (≤16 years of age at baseline) who started OK...
Objectives: To assess the tear meniscus height (TMH), noninvasive tear breakup time (NITBUT), and bulbar redness in pediatric patients after orthokeratology (OK). Methods: Pediatric patients who underwent overnight OK between December 2014 and November 2017 were retrospectively investigated. According to the time of wearing, subjects were divided...
Purpose: To examine the effects of one year of overnight orthokeratology (OK) treatment on the sub-basal nerve plexus (SBNP) and corneal sensitivity and to assess the reversibility of these effects one month after treatment interruption. Methods: Thirty-two subjects with low-moderate myopia underwent...
Purpose: To compare tear film osmolarity (TFO) measurements in non–contact lens (CL) wearers and wearers of hydrogel or overnight orthokeratology (OK) CLs, and to assess possible effects of long-term OK on TFO. Methods: Overall, 108 subjects with moderate myopia participated in 2...
Objective: To assess the effects of a short period of orthokeratology (OK) on corneal sub-basal nerve plexus (SBNP) morphology and corneal sensitivity. Methods: Measurements were made in 56 right eyes of 56 subjects with low-to-moderate myopia who wore 2 OK lens designs...
Objectives: To investigate the topographic factors related to axial length (AL) growth rate in orthokeratology. Methods: Clinical data of myopic children with orthokeratology lenses from 2010 to 2016 were investigated. Corneal topography (Orbscan II) and IOLMaster-measured AL at baseline and...
Purpose: This study aims to analyze two commercial orthokeratology lens designs and compare their optical effects at the corneal level. Methods: This is a retrospective study on subjects seeking an orthokeratology fitting for myopia management at the Université de Montréal clinic between...
Punti chiave: Il difetto miopico è associato ad un allungamento dell'asse antero-posteriore oculare. L'ortocheratologia è un trattamento mediante lenti a contatto in grado di rallentare l'allungamento della lunghezza assiale. Abstract Scopo Si indaga sull'effetto dell'ortocheratologia (ortho-k) sulla crescita della lunghezza...
Punti Chiave : Durante ortocheratologia, a breve termine, non sono state misurate variazioni di biomeccanica Non si sono osservate variazioni di biomeccanica corneale tra i due gruppi di portatori di lenti a contatto rigide gas permeabili corneali (uno con disegno...
Punti Chiave : E' stato validato un questionario sulla qualità della vita in soggetti che utilizzano lenti a contatto per ortocheratologia o altri tipi di lenti a contatto Il questionario ha dimostrato essere ottimo test psicometrico per indagare la qualità...
Punti Chiave : Risultati di 12 anni di ortocheratologia per il controllo della progressione della miopia BACKGROUND: Diversi studi riportano l’efficacia dell’ortocheratologia per quanto riguarda il controllo della miopia. Lo scopo di questo studio è quello di esaminare l’influenza dell’ortocheratologia...
Punti Chiave : Dato che la miopia è il difetto refrattivo più diffuso e può causare alcune patologie che rischiano di compromettere la vista, è diventato imperativo trovare un metodo efficace per rallentarne la progressione. L’ortocheratologia, oggi, è una delle...
Punti Chiave : Ortocheratologia introduce aberrazioni oculari a breve e lungo periodo (2 anni) Non si sono osservate correlazioni significative tra le variazioni di aberrazioni oculari e l'allungamento assiale nel lungo periodo (2 anni) Sono state applicate lenti OK...
Abstract: The prevalence of myopia in Chinese children has been rising each year. Research has shown that orthokeratology is a good method for controlling the progression of myopia. In this article, we review the current prevalence of myopia, the development...
Objective: To assess the bioburden in an orthokeratology contact lens (OK) care system (defined by microbial identification from OK case fluid) and to identify the risk factors causing high bioburden for pediatric OK wearers in southern Taiwan. Sorgente: Microbial Bioburden...
Objective: The purpose of the study was to evaluate the efficacy of orthokeratology in correcting myopia. Methods: The study took place over three ophthalmology practices, which were trained in fitting corneal reshaping therapy lenses. Sorgente: Success Rate of Incorporating Corneal...
Sorgente: Progressive anisometropia and orthokeratology: a case report...
Myopia is an important public health issue, and high myopia may lead to severe complications if left untreated. Orthokeratology lenses, worn overnight to reshape the cornea, are one of many recent modalities used to slow down the progression of myopia...
Purpose: The aim of this study was to investigate the influence of overnight orthokeratology (OOK) on ocular surface and meibomian glands in children and adolescents. Methods: Prospective, noncomparative study included the ocular surface disease index (OSDI), tear osmolarity, corneal and...
Sorgente: Orthokeratology: An Academic Perspective...
Objectives: The aim of this review is to evaluate the ocular safety of orthokeratology (OrthoK) treatment of myopia correction and retardation. Data Sources: Clinical studies published in English and Chinese were identified from MEDLINE, EMBASE CNKI, CQVIP, and WANFANG DATA...
Highlights •Orthokeratology did not affect the changes in endothelial cell morphology in children aged 6–12 years. •Endothelial cell density reduced by 98 cells/mm2 in ortho-k subjects and 56 cells/mm2 in control subjects in two years. •Mild pleomorphism was observed in the both...
To evaluate a novel fitting algorithm for estimation of alignment curve (AC) radius during orthokeratology lens trial. Sorgente: A novel fitting algorithm for alignment curve radius estimation using corneal elevation data in orthokeratology lens trial...
To analyze the change in subfoveal choroidal thickness (SFChT) and its relationship with changes in axial length (AL) in myopic children treated with Orthokeratology (Ortho-k). Sorgente: Choroidal thickness and axial length changes in myopic children treated with orthokeratology...
Purpose: To assess the relationship between short-term and long-term changes in power at different corneal locations relative to the change in central corneal power and the 2-year change in axial elongation relative to baseline in children fitted with orthokeratology contact...
http://journals.lww.com/claojournal/Pages/articleviewer.aspx?year=9000&issue=00000&article=99401&type=Abstract...
http://journals.lww.com/claojournal/Pages/articleviewer.aspx?year=9000&issue=00000&article=99391&type=Abstract...
http://www.contactlensjournal.com/article/S1367-0484(16)30191-6/fulltext?rss=yes...
una nuova ricerca afferma che l’efficacia dell’ortocheratologia (OK) nel rallentamento della progressione della miopia non è conseguenza del defocus miopico indotto dalla variazione di potere corneale dopo OK “ L’ipotesi del defocus ipermetropico causa dell’allungamento assiale non è confermata. L’efficacia di...
Lo scopo di questo studio riguarda l’analisi delle aberrazioni corneali indotte da due trattamenti di ortocheratologia, uno decentrato e uno centrato, la reversibilità della tecnica e l’influenza delle aberrazioni sulla qualità visiva soggettiva e sulla qualità di vita. Autore:...
L’ortocheratologia notturna è un metodo sempre più diffuso per la compensazione della miopia. Quello che si prefigge questa analisi, è verificare l’efficacia e la sicurezza dell’ortocheratologia notturna negli adolescenti e, se possibile, verificarne l’effetto sulla progressione miopica. Autore: Alessia...
Lo scopo di questo elaborato è analizzare come operi il trattamento ortocheratologico e come questo influisca sull’anatomia e sulla fisiologia dell’epitelio della cornea, soffermandoci in primo luogo sulla condizione anatomo-fisiologica della cornea umana in condizioni normali e analizzando poi la...
