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Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association

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https://www.readbyqxmd.com/read/28606616/the-effect-of-previous-soft-contact-lens-wear-on-corneal-refractive-surgery-outcomes
#1
Aoife Lloyd-McKernan, Luisa Simo Mannion, Veronica O'Dwyer
PURPOSE: To examine the influence of previous soft contact lens (SCL) wear on corneal refractive surgery (CRS) outcomes when SCL wear is ceased for two weeks versus twenty-four hours, and also when compared to no wear, prior to CRS. METHODS: A retrospective examination of CRS patient records was carried out for two groups of patients- who ceased SCL wear for two weeks (n=45) and for twenty-four hours (n=49) prior to CRS and compared to a non-contact lens (NCL) control group (n=45 and n=49, respectively)...
June 10, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28602547/non-invasive-objective-and-contemporary-methods-for-measuring-ocular-surface-inflammation-in-soft-contact-lens-wearers-a-review
#2
REVIEW
Cecilia Chao, Kathryn Richdale, Isabelle Jalbert, Kim Doung, Moneisha Gokhale
Contact lens wear is one of the primary risk factors for the development of ocular surface inflammatory events. The purpose of this review is to examine and summarize existing knowledge on the mechanisms of contact lens related ocular surface inflammation and the evidence for the effectiveness of current objective methods to measure ocular surface inflammation. Contact lens wear is postulated to trigger an inflammatory response on the ocular surface due to mechanical, chemical, hypoxic stress, or by the introduction of microbes and their toxins...
June 8, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28550976/cultivation-and-characterization-of-pterygium-as-an-ex-vivo-study-model-for-disease-and-therapy
#3
Natasha Josifovska, Dóra Júlia Szabó, Richárd Nagymihály, Zoltán Veréb, Andrea Facskó, Ketil Eriksen, Morten C Moe, Goran Petrovski
PURPOSE: Development of ex vivo model to study pathogenesis, inflammation and treatment modalities for pterygium. METHODS: Pterygium obtained from surgery was cultivated (3 months). Gravitational attachment method using viscoelastic facilitated adherence of graft and outgrowing cells. Medium contained serum as the only growth supplement with no use of scaffolds. Surface profiling of the multi-layered cells for hematopoietic- and mesenchymal stem cell markers was performed...
May 24, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28550975/corneo-scleral-limbal-changes-following-short-term-soft-contact-lens-wear
#4
Alejandra Consejo, Maciej M Bartuzel, D Robert Iskander
PURPOSE: To assess whether short-term soft contact lens wear alters the anterior eye surface. METHODS: Twenty-two neophyte subjects wore soft contact lenses for a period of five hours. Topography based corneo-scleral limbal radius estimates were derived from height measurements acquired with a corneo-scleral profilometer. Additionally, central corneal thickness (CCT), anterior chamber depth (ACD), corneal curvature radius (R) and white-to-white (WTW) diameter were acquired with an OCT-assisted biometer...
May 24, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28533022/knowledge-usage-and-barriers-associated-with-contact-lens-wear-in-ghana
#5
Samuel Abokyi, George Manuh, Heinz Otchere, Alex Ilechie
BACKGROUND: Despite findings that contact lens wear for vision correction provides better quality of life than spectacles, contact lens use in developing countries is low. This study evaluated knowledge, usage and barriers associated with contact lens wear among spectacle wearers in Cape Coast, Ghana. METHOD: A cross-sectional survey using a structured questionnaire was conducted on an adult population of spectacle wearers to assess their knowledge of contact lens wear for vision correction...
May 19, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28522252/optical-quality-of-rotationally-symmetrical-contact-lenses-derived-from-their-power-profiles
#6
Antonio J Del Águila-Carrasco, Daniel Monsálvez-Romín, Eleni Papadatou
PURPOSE: To present a methodology for evaluating the optical quality of rotationally symmetrical contact lenses (CLs) from a single power profile. METHODS: Simulated rotationally symmetrical power profiles corresponding to different CLs designs (monofocal, two-zone center-near bifocal, and four-zone center-distance bifocal) were used to calculate the wavefront error profile by means of numerical integration. Then, each lens wavefront error profile was spun around the center to obtain the lens wavefront error surface...
May 15, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28522251/very-long-term-success-of-pterygium-surgery-with-conjunctival-graft
#7
Ofira Zloto, Nachum Rosen, Ari Leshno, Mordechai Rosner
PURPOSE: To examine to the very long term prognosis (16 years in average) of pterygium surgery with superior or inferior conjunctival graft. METHODS: Clinical data for patients that underwent pterygium surgery with conjunctival graft by two surgeons at the Goldschleger Eye Institute, Sheba Medical Center, Israel, between the years 1997-2001 were retrieved from medical records. For all the included patients, data about their eye examinations was summarized and a questionnaire about their eye history was done...
May 15, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28501444/modern-scleral-lenses-mini-versus-large
#8
REVIEW
Daddi Fadel
The evolution of scleral lenses has led to new formulations of scleral fitting concepts and designs. The diameters of modern scleral lenses have been overhauled too and they are smaller comparing to the original ones. Nowadays, prescription of mini-sclerals supposedly seems in major extension and it appears indeed the necessity of some practitioner to differentiate the smaller mini-scleral lenses from larger mini-scleral lenses empathizing that they are the "smaller" ones. Therefore, it is maybe, necessary a definition of mini-scleral lenses referring to the landing zone width in relation to the horizontal visible iris diameter (HVID) and the limbus extension...
May 10, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28501443/meibomian-gland-dysfunction-and-its-determinants-in-iranian-adults-a-population-based-study
#9
Hassan Hashemi, Hadith Rastad, Mohammad Hassan Emamian, Akbar Fotouhi
PURPOSE: To estimate the prevalence of Meibomian gland dysfunction (MGD) and determine the associated factors in the general population in Iran. METHODS: This cross-sectional study is based on the data from the second phase of the Shahroud Eye Cohort Study conducted in 2014. Of the 4737 participants of the second phase, data was available for 4700 people; their mean age was 55.9±6.2 years and 2768 (58.9%) were women. Diagnosis of MGD was made based on the classification of the International Workshop on MGD as judged by the examining ophthalmologist...
May 10, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28501442/theoretical-fitting-characteristics-of-typical-soft-contact-lens-designs
#10
Anna Sulley, Kathrine Osborn Lorenz, James S Wolffsohn, Graeme Young
PUROSE: To calculate theoretical fitting success rates (SR) for a range of typical soft contact lens (SCL) designs using a mathematical model. METHOD: A spreadsheet mathematical model was used to calculate fitting SR for various SCL designs. Designs were evaluated using ocular topography data from 163 subjects. The model calculated SR based on acceptable edge strain (within range 0-6%) and horizontal diameter overlap (range 0.2-1.2mm). Where lenses had multiple base curves (BCs), eyes unsuccessful with the steeper BC were tested with the flatter BC and aggregate SR calculated...
May 10, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28501441/repeatability-of-topographic-corneal-thickness-in-keratoconus-comparing-visante%C3%A2-oct-and-oculus-pentacam-hr-%C3%A2-topographer
#11
Heinz Otchere, Luigina Sorbara
PURPOSE: To assess the repeatability and reproducibility of Visante™ OCT and Oculus Pentacam HR® in measuring central (CCT) and topographic corneal thickness (TCT) along the principle meridians in keratoconus (KC) corneae. METHOD: Twenty participants diagnosed with KC were recruited. There were two study visits. On the first study visit, two repeated corneal thickness measurements were obtained with each instrument. Measurements were repeated at least 48hrs later in the same order...
May 10, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28495356/scleral-topography-analysed-by-optical-coherence-tomography
#12
Stefan Bandlitz, Joachim Bäumer, Uwe Conrad, James Wolffsohn
PURPOSE: A detailed evaluation of the corneo-scleral-profile (CSP) is of particular relevance in soft and scleral lenses fitting. The aim of this study was to use optical coherence tomography (OCT) to analyse the profile of the limbal sclera and to evaluate the relationship between central corneal radii, corneal eccentricity and scleral radii. METHODS: Using OCT (Optos OCT/SLO; Dunfermline, Scotland, UK) the limbal scleral radii (SR) of 30 subjects (11M, 19F; mean age 23...
May 8, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28465091/qualitative-assessment-of-tear-dynamics-with-fluorescein-profilometry
#13
Izabela K Garaszczuk, D Robert Iskander
PURPOSE: To describe a new methodology for tear-film dynamics assessment by observing fluorescein decay rate over time and to understand the relationship between the newly defined tear fluorescein washout rate (TFWR) and other measures of the tear film behaviour. METHODS: Forty subjects (24F/16M) aged (mean±standard deviation) 31.8±14.2years volunteered for the study. It consisted of the review of medical history, McMonnies questionnaire (McMQ), slit lamp examination, and TFWR using a newly-developed fluorescein profilometry...
April 29, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28366677/change-in-vault-during-scleral-lens-trials-assessed-with-anterior-segment-optical-coherence-tomography
#14
Varsha M Rathi, Preeji S Mandathara, Srikanth Dumpati, Virender S Sangwan
PURPOSE: To assess the change in vault during scleral lens fitting with anterior segment optical coherence tomography (AS-OCT). METHODS: This study comprised of patients who had AS-OCT performed after 1h and 4h of scleral lens wear (PROSE, prosthetic replacement of the ocular surface ecosystem, Boston Foundation for Sight, Needham Heights, MA, USA). Vault was measured on AS-OCT as the distance between the front surface of the cornea in the center and the back surface of the scleral lens...
March 30, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28622774/exam-time
#15
EDITORIAL
Shehzad Naroo
No abstract text is available yet for this article.
June 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28292445/a-quick-look%C3%A2
#16
EDITORIAL
Shehzad Naroo
No abstract text is available yet for this article.
April 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28292444/corrigendum-to-effect-of-orbital-protrusion-and-vertical-interpalpebral-distance-on-pterygium-formation-contact-lens-and-anterior-eye-37-2014-153-156
#17
Hasan Altinkaynak, Ali Demircan, Can Kocasarac, Necip Kara, Hüseyin Dundar, Çiğdem Altan, Ahmet Demirok
No abstract text is available yet for this article.
April 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/27956045/biomechanical-properties-of-early-keratoconus-suppressed-deformation-signal-wave
#18
Hassan Hashemi, Asghar Beiranvand, Abbasali Yekta, Amir Asharlous, Mehdi Khabazkhoob
PURPOSE: To examine the diagnostic validity of different corneal biomechanical parameters for the detection of early keratoconus METHODS: Sixty-one eyes with a diagnosis of early keratoconus and 61 topographically normal eyes were enrolled in the study. All participants underwent testing with the Ocular Response Analyzer (ORA), and 40 indices from each cornea were included in the analysis. RESULTS: The mean (standard deviation: SD) of keratometry and central corneal thickness in keratoconic corneas was 46...
April 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/27931882/evaluation-of-the-diagnostic-ability-of-vector-parameters-characterizing-the-corneal-astigmatism-and-regularity-in-clinical-and-subclinical-keratoconus
#19
Antonio Martínez-Abad, David P Piñero, Pedro Ruiz-Fortes, Alberto Artola
PURPOSE: To evaluate the diagnostic ability of the vector parameters ocular residual astigmatism (ORA), topography disparity (TD) and topographic astigmatism CorT (anterior and total) for the detection of clinical and subclinical keratoconus, and to develop a detection model based on them. METHODS: This study comprised a total of 61 keratoconus eyes (KC group), 19 eyes with subclinical keratoconus (SKC group) and 100 healthy eyes (control group). In all cases, a complete eye exam was performed including an analysis of the corneal structure with the Sirius system (Costruzione Strumenti Oftalmici, CSO)...
April 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28359825/bilateral-simultaneous-infective-keratitis
#20
Lai Hiu On Annie, Manotosh Ray
AIM: To analyze the demographics, risk factors, clinical and microbiological characteristics of cases of bilateral simultaneous infective keratitis. METHODS: In this retrospective case series, patients with clinical evidence of bilateral simultaneous infective keratitis were identified from January 1, 2011 to August 31, 2016. Demographics, risk factors, clinical and microbiological characteristics, and treatment outcomes were analyzed. RESULTS: Five patients (ten eyes) with bilateral simultaneous infective keratitis were identified...
March 27, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
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