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Jacinto Santodomingo-Rubido, César Villa-Collar, Bernard Gilmartin, Ramón Gutiérrez-Ortega, Keiji Sugimoto
PURPOSE: The primary outcome of this study is to compare the axial length growth of white European myopic children wearing orthokeratology contact lenses (OK) to a control group (CT) over a 7-year period. METHODS: Subjects 6-12 years of age with myopia -0.75 to -4.00DS and astigmatism ≤1.00DC were prospectively allocated OK or distance single-vision spectacles (SV) correction. Measurements of axial length (Zeiss IOLMaster), corneal topography, and cycloplegic refraction were taken at 6-month intervals over a 2-year period...
October 21, 2016: Current Eye Research
Jacinto Santodomingo-Rubido, César Villa-Collar, Bernard Gilmartin, Ramón Gutiérrez-Ortega
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 lenses (OK). METHODS: Thirty-one white European subjects 6 to 12 years of age and with myopia -0.75 to -4.00 DS and astigmatism ≤1.00 DC were fitted with OK. Differences in refractive power 3 and 24 months post-OK in comparison with baseline and relative to the change in central corneal power were determined from corneal topography data in eight different corneal regions (i...
October 19, 2016: Eye & Contact Lens
Jaeyoung Kim, Mee Kum Kim, Won Ryang Wee, Joo Youn Oh
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 of fortified antibiotic eye drops. The patient had been using overnight orthokeratology lenses for 4 months before presentation of corneal ulcer...
October 13, 2016: Eye & Contact Lens
Nery García-Porta, Laura Rico-Del-Viejo, Alba Martin-Gil, Gonzalo Carracedo, Jesus Pintor, José Manuel González-Méijome
Purpose. To compare the ocular surface symptoms and signs in an adult population of silicone-hydrogel (Si-Hy) contact lens (CL) wearers with another modality of CL wear, overnight orthokeratology (OK). Materials and Methods. This was a prospective and comparative study in which 31 myopic subjects were fitted with the same Si-Hy CL and 23 underwent OK treatment for 3 months. Dry eye questionnaire (DEQ) was filled in at the beginning of the study and then after 15 days, 1 month, and 3 months using each CL modality...
2016: BioMed Research International
Miguel Faria-Ribeiro, Rafael Navarro, José Manuel González-Méijome
PURPOSE: It has been hypothesized that central and peripheral refraction, in eyes treated with myopic overnight orthokeratology, might vary with changes in pupil diameter. The aim of this work was to evaluate the axial and peripheral refraction and optical quality after orthokeratology, using ray tracing software for different pupil sizes. METHODS: Zemax-EE was used to generate a series of 29 semi-customized model eyes based on the corneal topography changes from 29 patients who had undergone myopic orthokeratology...
September 23, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Edward Lum, Blanka Golebiowski, Helen A Swarbrick
PURPOSE: To investigate changes in corneal subbasal nerve fiber density and orientation during a 3-month orthokeratology (OK) lens wear period and their relationship with concurrent changes in corneal sensitivity. METHODS: Sixteen subjects wore overnight OK lenses for 90 days and were assessed at baseline, Day 30, and Day 90. Nerve images at the corneal apex and temporal mid-periphery were captured from the right eye only using in vivo confocal microscopy and analyzed to calculate nerve fiber density (NFD) and global nerve fiber orientation (GNFO)...
September 8, 2016: Ocular Surface
Philip Raey Kidd Turnbull, Oliver James Munro, John Robert Phillips
PURPOSE: A number of optical methods for slowing myopia progression have been tested and are now available. However, data on real-world use in clinical use is scarce. Here, we present a review of the clinical outcomes for patients attending a specialist myopia control clinic at The University of Auckland Optometry School, NZ. CASE SERIES: We report a comparative case series of 110 patients (aged 4-33 years, mean: 12.13 ± 4.58 years, 62% female) who attended the clinic between 2010 and 2014...
September 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
L H Wang
In this paper, some typical excessive medical problems in the treatment of common eye diseases in children were listed as follows: unnecessary examinations carried out for children with little or no corresponding complaints; prescription for spectacles for physiological hyperopia or astigmatism in children; over-diagnosis, over-or nonstandard-treatment for amblyopia; strabismus surgeries performed in children with esotropia but without full optical correction of hyperopic refractive error, in children with monocular strabismus and amblyopia but without standard cover therapy, in children with intermittent exotropia but without optical correction of myopic refractive errors and myopic anisometropia, and without evaluation of their fusional control ability; exaggerated the harm of myopia and the curative effect of Orthokeratology contact lenses without considering the patient's compliance; cataract surgery performed in infants with partial opacity of the lens that has little effect on the vision...
August 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Edward Lum, Blanka Golebiowski, Helen A Swarbrick
OBJECTIVES: To investigate changes in corneal sensitivity and nerve morphology in orthokeratology (OK) contact lens wear. METHODS: In a cross-sectional study, 54 subjects (aged 18-45 years) were grouped into three categories: nonlens (NL), soft lens (SCL), and OK lens wearers. Corneal sensitivity was measured at the corneal apex and 2.5 mm temporal to the apex using the Cochet-Bonnet aesthesiometer. Corneal nerve morphology was assessed by sampling a 1 mm area of the corneal sub-basal nerve plexus using the Heidelberg Retinal Tomograph with Rostock Corneal Module at the corneal apex and 2...
July 12, 2016: Eye & Contact Lens
Mengmei He, Yaru Du, Qingyu Liu, Chengda Ren, Junling Liu, Qianyi Wang, Li Li, Jing Yu
BACKGROUND: To investigate the effectiveness of orthokeratology (ortho-k) in reducing the development of myopia in Chinese children with low to moderate myopia. METHODS: This was a retrospective study. In the ortho-k group, there were141 subjects, and the average age was (9.43 ± 1.10) years. The average spherical equivalent refractive error (SER) was (-2.74 ± 1.15)D, with examinations performed 1, 7, 30, and 90 days and 12 months after the patients started wearing ortho-k lenses...
2016: BMC Ophthalmology
Miguel Faria-Ribeiro, Rafael Navarro Belsue, Norberto López-Gil, José Manuel González-Méijome
No abstract text is available yet for this article.
July 1, 2016: Journal of Biomedical Optics
Jacinto Santodomingo-Rubido, César Villa-Collar, Bernard Gilmartin, Ramón Gutiérrez-Ortega, Asaki Suzaki
PURPOSE: To assess the correlation between changes in corneal aberrations and the 2-year change in axial length in children fitted with orthokeratology (OK) contact lenses. METHODS: Thirty-one subjects 6 to 12 years of age and with myopia -0.75 to -4.00DS and astigmatism ≤1.00DC were fitted with OK. Measurements of axial length and corneal topography were taken at regular intervals over a 2-year period. Corneal topography at baseline and after 3 and 24 months of OK lens wear was used to derive higher-order corneal aberrations (HOA) that were correlated with OK-induced axial length changes at 2 years...
June 20, 2016: Eye & Contact Lens
Zhi Chen, Feng Xue, Jiaqi Zhou, Xiaomei Qu, Xingtao Zhou
PURPOSE: To investigate the effect of orthokeratology (ortho-k) treatment on choroidal thickness and its relationship with axial length change. METHODS: Seventy-seven myopic subjects aged between 7 and 17 years were treated with ortho-k lenses (n = 39) or single-vision spectacle lenses (SVL, n = 38). Choroidal thickness and axial length measurements were taken at baseline and repeated 1 week and 3 weeks after lens wear for the ortho-k group and at 3 weeks for the SVL group...
September 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
M A Khan, Ashutosh Gupta, T S Ahluwalia, P S Moulick, V S Gurunadh, Sandeep Gupta
BACKGROUND: Orthokeratology with reverse geometry contact lens is a non-surgical alternative to conventional contact lenses for correction of myopia. However, the strength of evidence for its efficacy and safety is limited to retrospective studies and only a few prospective studies. This prospective study, the first on Indian subjects, evaluated the outcome of orthokeratology among young myopes. METHODS: Fifty eyes of 25 young myopes (age 19-29 years) with myopia of -1 to 5...
April 2016: Medical Journal, Armed Forces India
Vinod K Maseedupally, Paul Gifford, Edward Lum, Rajeev Naidu, Dyana Sidawi, Bingjie Wang, Helen A Swarbrick
PURPOSE: To compare the magnitude of treatment zone decentration between eyes with minimally toric corneas (≤1.50 DC, LoTor group) and eyes with moderately toric corneas (1.50 to 3.50 DC, HiTor group) after a single overnight wear of spherical orthokeratology lenses. METHODS: In the LoTor group, 21 participants (9 M, 12 F, 20-40 years) were fitted using a conventional fitting approach based on the flat corneal meridian. In the HiTor group, 12 participants (5 M, 7 F, 19-45 years) were fitted using the conventional fitting method in one eye (HiTor group I) and the other eye was fitted with a lens with slightly deeper sagittal height (HiTor group II)...
September 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
María Nombela-Palomo, Gema Felipe-Marquez, Jose Luis Hernandez-Verdejo, Amelia Nieto-Bona
OBJECTIVE: To assess the effects of a short period of orthokeratology (OK) on corneal subbasal 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 (Group CRT: HDS 100 Paragon CRT, n=35; Group SF: Seefree; n=21) for a period of 1 month and in 15 right eyes of noncontact lens wearers as controls. The variables determined in each participant were corneal sensitivity using a Cochet-Bonnet esthesiometer and 12 SBNP variables determined on laser scanning confocal microscopy images using 3 different software packages...
May 26, 2016: Eye & Contact Lens
Mohammad Taher Rajabi, Seyedeh Simindokht Hosseini, Zahra Ghorbani, Fereshteh Nobahari, Fatemeh Bazvand, Askar Doostdar, Parviz Zarrinbakhsh, Mohammad Bagher Rajabi
PURPOSE: To investigate the medical profiles of patients referred to Iran Lens Clinic with myopic/myope-astigmatic refractive errors. METHODS: Medical records of 182 patients (364 eyes) with myopic/myope-astigmatic refractive errors that underwent orthokeratology contact lens wear and fulfilled a 6-month period of follow-up were recruited. Efficacy and safety of these contact lenses in improving the visual acuity and correction of the refractive errors were investigated...
September 2015: Journal of Current Ophthalmology
Pauline Kang, Helen Swarbrick
PURPOSE: To compare peripheral refraction changes along the horizontal and vertical meridians induced by three different orthokeratology (OK) lens designs: BE, Paragon CRT, and Contex lenses. METHODS: Nineteen subjects (6M, 13F, mean age 28 ± 7 years) were initially fitted with BE OK lenses in both eyes which were worn overnight for 14 days. Central and peripheral refraction and corneal topography were measured at baseline and after 14 nights of lens wear. After a minimum 2-week washout period, one randomly selected eye was re-fitted with a Paragon CRT lens and the other eye with a Contex OK lens...
September 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Jennifer R Cope, Sarah A Collier, Oliver D Schein, Allison C Brown, Jennifer R Verani, Rachel Gallen, Michael J Beach, Jonathan S Yoder
PURPOSE: To describe the clinical presentation and outcomes of Acanthamoeba keratitis (AK) in rigid gas permeable (RGP) contact lens wearers and to identify modifiable risk factors. DESIGN: Case-control investigation. PARTICIPANTS: Patients were RGP contact lens-wearing United States residents with a diagnosis of AK from 2005 through 2011. Controls were RGP contact lens wearers with no history of AK who were at least 12 years of age. METHODS: Patients were identified during 2 multistate AK outbreak investigations...
July 2016: Ophthalmology
Gonzalo Carracedo, Alba Martin-Gil, Begoña Fonseca, Jesús Pintor
OBJECTIVE: To evaluate the differences between goblet cell density (GCD) and symptomatology after one month of orthokeratology lens wear. METHODS: A pilot, short-term study was conducted. Twenty-two subjects (29.7±7.0 years old) participated voluntarily in the study. Subjects were divided into two groups: habitual silicone hydrogel contact lens wearers (SiHCLW) and new contact lens wearers (NCLW). Schirmer test, tear break up time (TBUT), Ocular Surface Disease Index (OSDI) questionnaire and conjunctival impression cytology...
August 2016: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
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