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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/30217386/corneal-morphology-and-visual-outcomes-in-lasik-patients-after-orthokeratology-a-pilot-study
#1
António Queirós, César Villa-Collar, Ana Amorim-de-Sousa, Beatriz Gargallo-Martinez, Ramón Gutiérrez-Ortega, Javier González-Pérez, José M González-Méijome
A STATEMENT OF SIGNIFICANCE: For the first time, this study shows that corneas that previous undergone orthokeratology treatment do not respond differently to LASIK compared with previous soft contact lens wear experience. PURPOSE: To evaluate and compare the corneal morphology and visual outcomes of long-term soft and orthokeratology (OK) contact lens fitting in wearers undergoing corneal refractive surgery (LASIK) for myopia correction. METHODS: Sixteen (16) myopic patients wearing hydrophilic soft contact lens (SCL, n = 8 subjects, control group) and OK (n = 8 subjects, OK group) lenses who undergone LASIK were retrospectively evaluated...
September 11, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30197039/criticality-of-the-measurement-of-corneal-thickness-in-specular-reflection-by-digital-biomicroscope
#2
Arianna Marelli, Ivan Roberto De Vita, Federica Cozza, Silvia Tavazzi
PURPOSE: The aim was to evaluate the effects on corneal thickness (t) measurement, of asymmetry of the CCD position for a digital biomicroscope in specular reflection. METHODS: t was deduced from the distance between reflexes from anterior and posterior corneal surfaces using a biomicroscope (Takagi SM70 N), with the illuminator either, (a) farther from sensor side (150 eyes) or, (b) closer to it (134 eyes). The distance between reflexes was also measured on a glass slide and a reference lens, with nominal thicknesses of 1580 and 520 μm, respectively...
September 6, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30131217/sjogren-s-syndrome-in-optometric-practices-in-north-america
#3
Barbara Caffery, Jennifer Harthan, Sruthi Srinivasan, M Acs, Melissa Barnett, Charles Edmonds, Larisa Johnson-Tong, Richard Maharaj, Bart Pemberton, Dominik Papinski
PURPOSE: To describe the presentation of dry eye in Sjogren's syndrome (SS) in optometric practices, to report on the methodology used in dry eye monitoring and to explore the level of corneal staining versus age and time of disease. METHODS: Records of SS patients were reviewed in 6 optometric sites. A standardized abstraction tool was developed to collect data from the records including: health history, medications and symptoms and signs of dry eye. The methods of testing symptoms and signs of dry eye were recorded...
August 18, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30131216/corrigendum-to-drugs-do-we-need-them-applications-of-non-pharmaceutical-therapy-in-anterior-eye-disease-a-review-contact-lens-anterior-eye-40-2017-360-366
#4
Priyanka Mandal, Mohammad I Khan, Sunil Shah
No abstract text is available yet for this article.
August 18, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30120003/in-vitro-anti-demodectic-effects-and-terpinen-4-ol-content-of-commercial-eyelid-cleansers
#5
Isabella M Y Cheung, Ally L Xue, Andy Kim, Kirsty Ammundsen, Michael T M Wang, Jennifer P Craig
PURPOSE: To compare the in vitro anti-demodectic activity of four commercially available dedicated eyelid cleansers (Cliradex® towelette cleanser, Oust™ Demodex® cleanser, Blephadex™ eyelid foam, TheraTears® SteriLid® eyelid cleanser), tea tree oil, undiluted terpinen-4-ol and linalool; and to assess the terpinen-4-ol content of the commercial cleansers and tea tree oil. METHODS: In vitro anti-demodectic efficacy assessment: 93 viable Demodex mites were acquired from the epilated eyelashes of 10 participants, and were randomised to application with one of the four eyelid cleansers, 100% and 50% tea tree oil, undiluted terpinen-4-ol and linalool, or no treatment...
August 14, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30115549/effects-of-corneoscleral-topography-on-soft-contact-lens-performance-a-pilot-study
#6
Bo Tan, Yixiu Zhou, Andrew D Graham, Meng C Lin
To quantify corneoscleral junction (CSJ) topography in soft contact lens (SCL) wearers, and assess the association between the CSJ and SCL performance and subjective comfort, forty-four adapted SCL wearers (16 Asians, 16 Caucasians, 12 Latinos) were recruited for the present study. Corneal topography was taken with a Medmont E300 (Medmont International, Pty Ltd.). CSJ images were taken with a commercial OCT (Bioptigen, Inc.). Our published CSJ image analysis technique was used to describe the geometric properties of the CSJ using the sum of squared orthogonalized residuals (SSRo)...
August 13, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30100388/microbiocidal-characterization-of-a-novel-povidone-iodine-based-rigid-contact-lens-disinfecting-solution
#7
P Cho, S Reyes, M V Boost
This study investigated the efficacy of a novel povidone-iodine based disinfection solution for rigid gas permeable (RGP) lenses compared to three other currently available multipurpose and hydrogen peroxide solutions. Bactericidal and fungicidal activities were assessed using ISO 14729 reference methods, whilst amoebicidal properties were evaluated using an automated viability counter. All solutions were also assessed for long term storage stability over a 3-month period. The FDA guidelines were adequately achieved by all solutions tested and 3-month storage did not affect their activity against bacterial and fungal agents...
August 9, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30098876/visual-and-physiological-outcomes-of-scleral-lens-wear
#8
Muriel Schornack, Cherie Nau, Amy Nau, Jennifer Harthan, Jennifer Fogt, Ellen Shorter
PURPOSE: To describe patient-specific outcomes of scleral lens wear utilizing a variety of lens designs across multiple practice settings as reported in an international practitioner survey. METHODS: An electronic survey was administered to eye care providers who prescribe scleral lenses in which they were asked to describe their most recently examined established scleral lens patient. Data was collected on patient characteristics, lens designs, wearing schedules, care products, and visual and physiological outcomes of lens wear...
August 8, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30075938/visual-quality-with-corneo-scleral-contact-lenses-for-keratoconus-management-part-ii
#9
Juan Carlos Montalt, Esteban Porcar, Enrique España-Gregori, Cristina Peris-Martínez
PURPOSE: To evaluate the visual quality results when fitting a corneo-scleral contact lens (CScL) after intracorneal ring segment (ICRS) implantation for keratoconus management. METHODS: Twenty-seven eyes of 27 patients with keratoconus underwent ICRS implantation and had CScL fitted as their visual quality was unsatisfactory with their spectacles or contact lenses. Patients received a complete eye examination, refraction and visual acuity assessment, anterior eye biomicroscopy, ocular fundus examination, corneal topographic analysis, endothelial-cell count, and visual quality assessment using contrast sensitivity and aberrometry tests...
July 31, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30055934/relationship-of-placido-corneal-topography-data-with-scleral-lens-fitting-parameters
#10
Rute J Macedo-de-Araújo, Ana Amorim-de-Sousa, António Queirós, Eef van der Worp, José M González-Méijome
PURPOSE: To analyze the relationship between corneal sagittal height and asymmetry parameters derived from Placido-videokeratoscopy with the parameters of fitted scleral lenses (ScCLs). METHODS: Corneal topographies were measured with MedmontE300 in a total of 126 eyes with irregular and regular corneas before ScCL fitting were analyzed. Measurements of sagittal height (OC-SAG) at steep and flat corneal meridians were obtained for 10 mm and 12 mm chords. Estimated Height (EHChord) parameters were taken for a chord equal to the diameter of the lens that each subject was wearing at different semi-meridians...
July 25, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30054088/intra-ocular-pressure-variation-associated-with-the-wear-of-scleral-lenses-of-different-diameters
#11
Langis Michaud, Dan Samaha, Claude J Giasson
PURPOSE: To evaluate the variation of intra-ocular pressure during scleral lens wear, and the influence of the lens diameter on the results. METHODS: This is a prospective, randomized study performed on Caucasian subjects (16 F; 5 M), aged 24.7 + 4.1 y.o. A diurnal variation pattern (IOPg) was established, then, transpalpebral IOP (IOPt) was taken before and during SL wear. One eye, randomly fitted with a 15.8 diameter SL (L1), was compared to the fellow eye, fitted with an 18 mm SL of the same design, thickness and material (L2)...
July 24, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30029924/semi-automatic-measurement-of-rigid-gas-permeable-contact-lens-movement-in-keratoconus-patients-using-blinking-images
#12
Hassan Rezazadeh, Hossein Arabalibeik, Fateme Alipour, Pezhman Pasyar, Vahid Sadeghi
PURPOSE: To introduce a method for estimation of the rigid gas-permeable contact lens (RGP) movement. MATERIALS AND METHODS: Videos captured from normal blinking of keratoconus patients while wearing RGP lenses were used for this study. The videos are recorded using the CCD camera of a smart phone attached to the eyepiece of the slit lamp. The algorithm starts with extracting two frames of the video related to the highest and lowest positions of the lens during blinking, followed by an appropriate edge detection method...
July 17, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30025791/anterior-chamber-parameters-in-early-and-advanced-keratoconus-a-meridian-by-meridian-analysis
#13
Enric Mas-Aixala, Joan Gispets, Núria Lupón, Genís Cardona
PURPOSE: To explore anterior segment changes with keratoconus onset and progression to determine whether structural changes are predominantly corneal, limbal or both. To investigate these changes in different corneal meridians. METHOD: Eighty-four eyes with keratoconus and 49 healthy eyes were included in the study. Eyes with keratoconus were divided in two groups according to the Amsler-Krumeich classification: stage I and stages II-IV. Scheimpflug images at three different meridians were used to evaluate the following parameters: anterior chamber depth from the endothelium (ACD_end) and corneal thickness (CT) (software provided), anterior chamber depth (ACD) and sagittal depth (SAGT) from the epithelium, and distance from the end point of SAGT to the anterior surface of the lens (DL) (measured manually), and [ACD - CT] and [SAGT - CT] (calculated)...
July 16, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30007838/the-influence-of-centre-thickness-on-miniscleral-lens-flexure
#14
Stephen J Vincent, Louise P Kowalski, David Alonso-Caneiro, Henry Kricancic, Michael J Collins
PURPOSE: To examine the influence of centre thickness upon miniscleral lens flexure and the association between the magnitude of in-vivo lens flexure and scleral toricity. METHODS: In-vivo lens flexure was measured using a videokeratoscope in 9 healthy young participants (25 ± 4 years) with normal corneae fitted with ICD 16.5 miniscleral lenses (hexafocon B material) with centre thicknesses of 150, 250, and 350 μm. Scleral toricity was determined from sagittal height data over a 15 mm chord obtained from a corneo-scleral topographer...
July 12, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29980382/anterior-eye-surface-changes-following-miniscleral-contact-lens-wear
#15
Alejandra Consejo, Joséphine Behaegel, Maarten Van Hoey, James S Wolffsohn, Jos J Rozema, D Robert Iskander
PURPOSE: To quantify the effect of short-term miniscleral contact lens wear on the anterior eye surface of healthy eyes, including cornea, corneo-scleral junction and sclero-conjuctival area. METHODS: Twelve healthy subjects (29.9 ± 5.7 years) wore a highly gas-permeable miniscleral contact lens of 16.5 mm diameter during a 5-hour period. Corneo-scleral height profilometry was captured before, immediately following lens removal and 3 h after lens removal...
July 3, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29958779/blink-test-enhances-ability-to-screen-for-dry-eye-disease
#16
James S Wolffsohn, Jennifer P Craig, Maria Vidal-Rohr, Sonia Trave Huarte, Lexia Ah Kit, Michael Wang
AIM: To evaluate the patient-administered Optrex™ Dry Eye Blink Test against established clinical criteria for the diagnosis of dry eye disease (DED) and to evaluate its benefit in enhancing screening for DED. METHODS: Eighty-seven participants aged 38 ± 17 years, (44 female) were screened for DED using the Tear Film and Ocular Surface Society Dry Eye Workshop II (TFOS DEWS II) diagnostic criteria. In addition to symptoms screening with the Ocular Surface Disease Index questionnaire (≥13 cut-off score for DED), these criteria required a sign of loss of homeostasis of the tear film in the form of a non-invasive tear breakup time (NIBUT) <10 s (Oculus Keratograph; K5M), an osmolarity reading ≥308 mOsm/L or an interocular difference in osmolarity of >8 (Tearlab), or ocular surface staining (>5 fluorescein corneal spots, >9 lissamine green spots or lid wiper staining [≥2 mm length & ≥25% width]) to confirm a diagnosis of DED...
October 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29958778/long-term-effects-of-intense-pulsed-light-treatment-on-the-ocular-surface-in-patients-with-rosacea-associated-meibomian-gland-dysfunction
#17
Kyoung Yul Seo, Sung Mo Kang, Dae Young Ha, Hee Seung Chin, Ji Won Jung
PURPOSE: We aimed to determine the long-term effects of intense pulsed light (IPL) treatment in rosacea-associated meibomian gland dysfunction (MGD). METHODS: We enrolled 17 rosacea subjects with moderate and severe MGD who underwent four IPL sessions at 3-week intervals and were followed up for 12 months. The subjects underwent clinical examinations at baseline (first IPL) and at 3 (second), 6 (third), 9 (fourth), and 12 weeks, as well as 6 and 12 months, after baseline...
October 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29910023/accelerated-versus-standard-corneal-collagen-cross-linking-in-pediatric-keratoconus-patients-24-months-follow-up-results
#18
Ozge Sarac, Mehtap Caglayan, Betul Seher Uysal, Ayse Guzin Taslipinar Uzel, Burak Tanriverdi, Nurullah Cagil
PURPOSE: To compare the 24 month visual, refractive, topographic and aberrometric results of the accelerated and standard corneal collagen cross-linking (CXL) in pediatric keratoconus patients. METHODS: 87 eyes of 64 consecutive keratoconus patients under 18 years old with 24 month follow-up period following standard or accelerated CXL were included. 38 eyes received standard CXL (3 Mw/cm2 , 30 min), while 49 eyes had accelerated CXL (9 mW/cm2 , 10 min). Changes in the uncorrected (UCVA) and best corrected visual acuity (BCVA), spherical equivalent (SE), manifest astigmatism (MA), corneal topographic parameters, and corneal aberrations such as spherical aberration (SA), high order aberrations (HOAs), horizontal and vertical coma were evaluated...
October 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29910022/spectacle-prescriptions-review-to-determine-prevalence-of-ametropia-and-coverage-of-frequent-replacement-soft-toric-contact-lenses
#19
Doerte Luensmann, Jack L Schaeffer, Nicholas J Rumney, Andre Stanberry, Karen Walsh, Lyndon Jones
PURPOSE: To determine the prevalence of ametropia and astigmatism in a clinic population and to estimate the coverage of frequent replacement soft toric lenses. METHODS: A review of patient files was conducted at three clinical sites. Prescription data collected between January 2014 and March 2017 in a patient cohort 14 to 70 years of age inclusive were analyzed to determine prevalence of ametropia and astigmatism. The percent coverage of frequent replacement soft toric contact lenses has further been estimated using different ranges for sphere, cylinder and axis availability...
October 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29880424/blanket-therapy-one-size-fits-all-or-personal-tailoring-for-myopia-control
#20
EDITORIAL
Pauline Cho, Maureen V Boost
No abstract text is available yet for this article.
October 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
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