journal
MENU ▼
Read by QxMD icon Read
search

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

journal
https://www.readbyqxmd.com/read/28533022/knowledge-usage-and-barriers-associated-with-contact-lens-wear-in-ghana
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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/28359825/bilateral-simultaneous-infective-keratitis
#11
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
https://www.readbyqxmd.com/read/28343751/presbyopic-and-non-presbyopic-contact-lens-opinions-and-vision-correction-preferences
#12
Erin M Rueff, Melissa D Bailey
PURPOSE: To compare vision correction preferences, refractive error, and gender of non-presbyopes and presbyopes. METHODS: Adults who wear spectacles or contact lenses completed a survey about refractive correction opinions and refractive error was measured. RESULTS: Of the 304 subjects, 38.2% were presbyopic (≥40 years) and 59.2% were female. Spectacles were the primary vision correction for 78.0% of subjects. Compared to contact lens wearers, the proportion of presbyopes was higher (p=0...
March 23, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28342729/repeatability-and-agreement-of-scheimpflug-based-and-swept-source-optical-biometry-measurements
#13
Saadettin Sel, Jana Stange, Delia Kaiser, Laszlo Kiraly
PURPOSE: To evaluate the repeatability and comparability of biometry parameters between a Scheimpflug-based topography with axial length measurement (Pentacam AXL, Oculus, Wetzlar, Germany) and a swept-source optical biometry (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany). METHODS: A total of 50 eyes from 50 adult subjects had biometry measurements in one session three times using the Pentacam AXL and the IOLMaster 700. Keratometry, anterior chamber depth (ACD) and axial length (AL) values were obtained by both devices...
March 22, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28341243/variation-of-clearance-considering-viscosity-of-the-solution-used-in-the-reservoir-and-following-scleral-lens-wear-over-time
#14
Claudine Courey, Langis Michaud
PURPOSE: This study aims to evaluate the settling of a scleral lens and if this process is influenced by the nature of the fluid layer. METHODS: A prospective, non-randomized control study was performed using an 18mm scleral lens. They were fitted with a central clearance of 400 um at insertion. One eye was randomly assigned to be fitted with a non-preserved gel solution of carboxymethylcellulose, while the other was inserted with non-preserved saline. Measurements of clearance in 3 locations were taken (OCT) at baseline, every 30min up to 1h30 post insertion and every 2h thereafter up to 6h00 of wear...
March 21, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28336224/surface-coverage-with-single-vs-multiple-gaze-surface-topography-to-fit-scleral-lenses
#15
Gregory DeNaeyer, Donald R Sanders, Timothy S Farajian
OBJECTIVES: To determine surface coverage of measurements using the sMap3D(®) corneo-scleral topographer in patients presenting for scleral lens fitting. METHODS: Twenty-five eyes of 23 scleral lens patients were examined. Up-gaze, straight-gaze, and down-gaze positions of each eye were "stitched" into a single map. The percentage surface coverage between 10mm and 20mm diameter circles from corneal center was compared between the straight-gaze and stitched images...
March 20, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28336223/paediatric-idiopathic-limbal-stem-cell-deficiency
#16
Stephen J Vincent, Graham A Lee
Acquired limbal stem cell deficiency (LSCD) describes a condition in which the corneal limbal stem cells are altered or destroyed, typically due to ocular trauma, chronic allergy or inflammation. Idiopathic LSCD is a term used to describe limbal stem cell failure in the absence of any identifiable causative factor. While several cases of adult-onset LSCD have been identified previously, this case report describes a rare presentation of bilateral asymmetric idiopathic paediatric limbal stem cell deficiency in a sixteen-year-old male with an otherwise unremarkable ocular history...
March 20, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28336222/evaluation-of-the-shifting-of-the-line-of-sight-and-higher-order-aberrations-of-eyes-with-keratoconus-after-corneal-cross-linking
#17
Pinar Kosekahya, Mustafa Koc, Kemal Tekin, Murat Uzel, Cemile Ucgul Atilgan, Mehtap Caglayan, Pelin Yilmazbas
AIM: To evaluate changes in the coordinates of the line of sight (LoS) and higher order aberrations (HOAs) of eyes with keratoconus, following corneal cross-linking (CXL). METHODS: All patients (93 eyes) underwent detailed ophthalmologic examination and Pentacam HR measurements at baseline and at 3, 6, and 12 months after corneal CXL. LoS coordinates on the horizontal (x) and vertical (y) axes, vertical coma, vertical trefoil, spherical aberration, total root-mean square (RMS), and HOA-RMS values were recorded along with visual acuity and topographical parameters...
March 20, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28336221/the-use-of-contact-lens-telescopic-systems-in-low-vision-rehabilitation
#18
REVIEW
Stephen J Vincent
Refracting telescopes are afocal compound optical systems consisting of two lenses that produce an apparent magnification of the retinal image. They are routinely used in visual rehabilitation in the form of monocular or binocular hand held low vision aids, and head or spectacle-mounted devices to improve distance visual acuity, and with slight modifications, to enhance acuity for near and intermediate tasks. Since the advent of ground glass haptic lenses in the 1930's, contact lenses have been employed as a useful refracting element of telescopic systems; primarily as a mobile ocular lens (the eyepiece), that moves with the eye...
March 20, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28325632/current-optometric-practices-and-attitudes-in-keratoconus-patient-management
#19
Sara Ortiz-Toquero, Raul Martin
PURPOSE: To compare the current optometric practices and attitudes in the management of keratoconus patients in the UK and Spain. METHODS: An online survey (adapted to optometric practices) was distributed via a newsletter emailed by various professional organizations in the UK and Spain. RESULTS: Four hundred and sixty-four practitioners (126 in the UK; 338 in Spain) who prescribed gas permeable GP contact lenses (CLs) more than once per month (54...
March 18, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28292574/effect-of-lipid-based-dry-eye-supplements-on-the-tear-film-in-wearers-of-eye-cosmetics
#20
Michael T M Wang, Irene Sung Hee Cho, Soo Hee Jung, Jennifer P Craig
PURPOSE: To compare the effects on tear film parameters and contamination in cosmetic eyeliner wearers, after single application of two lipid-based dry eye treatments: a lipid-containing lubricant eye drop and a phospholipid liposomal spray. METHODS: Fifty participants were enrolled in a prospective, randomised, paired-eye, investigator-masked trial. Pencil eyeliner (Body Shop(®) Crayon Eye Definer) was applied to the upper eyelid periocular skin of both eyes, anterior to the lash line...
March 11, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
journal
journal
32839
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"