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Eye & Contact Lens

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https://www.readbyqxmd.com/read/29697492/acanthamoeba-an-overview-of-the-challenges-to-the-development-of-a-consensus-methodology-of-disinfection-efficacy-testing-for-contact-lens-care-products
#1
Jeffrey Brocious, Michelle E Tarver, Denise Hampton, Malvina Eydelman
With the increasing incidence of more pathogens that can cause microbial keratitis (MK), it is necessary to periodically reassess disinfection multipurpose solutions testing requirements to ensure that relevant organisms to challenge them are being used. Current testing protocols have included common pathogens such as Pseudomonas aeruginosa, Staphylococcus aureus, Serratia marcescens, Candida albicans, and Fusarium solani but have omitted less common pathogens such as Acanthamoeba. Specifically, Acanthamoeba sp...
April 24, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29664772/adenovirus-ocular-infections-prevalence-pathology-pitfalls-and-practical-pointers
#2
Debora Garcia-Zalisnak, Christopher Rapuano, John D Sheppard, Andrew R Davis
Adenoviral conjunctivitis comprises a large number of physician office visits in the United States and places a great financial burden on health care. It is estimated that the incidence of adenovirus infection to be as high as 20 million cases per year in the United States. There are multiple adenovirus serotypes, each associated with different types and severity of infection. Ocular manifestations of adenovirus include epidemic keratoconjunctivitis, pharyngoconjunctival fever, and nonspecific conjunctivitis...
April 13, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29570118/comparison-of-the-lubricity-and-surface-roughness-of-5-cosmetic-contact-lenses
#3
Charis Lau, Samuele Tosatti, Michelle Mundorf, Kingsley Ebare, Kathrine Osborn Lorenz
OBJECTIVES: Cosmetic contact lenses are increasingly popular because of their eye enhancing cosmetic benefits. The pigment particles used in these lenses can impact lens surface characteristics. This article examines the surface characteristics and the differences between the clear and the pigmented regions among five limbal ring design lenses. METHODS: Scanning electron microscopy was used to determine the location and depth of the pigment particles from the lens surface...
March 19, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29554029/assessment-of-tear-film-and-bulbar-redness-by-keratograph-5m-in-pediatric-patients-after-orthokeratology
#4
Wenjia Xie, Xia Zhang, Yesheng Xu, Yu-Feng Yao
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 into three groups: 1-week, 1-month, and over 1-year. Age-matched subjects were recruited as a control group. Keratograph 5M was used to assess TMH, NITBUT-first, NITBUT-average, and bulbar redness score...
March 16, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29554028/drug-to-prevent-pediatric-myopia-what-would-it-take
#5
Gary D Novack
Because of the epidemic of myopia with both its short-term and long-term effects, we desperately need ways to slow myopic progression. In this study which was part of a myopia prevention symposium, the author answers the following question: Assuming that researchers did come up with a pharmacological treatment to slow myopic progression-what would it take to obtain regulatory approval from the United States Food and Drug Administration (FDA)? Previous publicly available information (a 2003 FDA advisory committee on this topic, International Conference on Harmonisation guidances on drug development, and published articles) as well as the author's experience is used...
March 16, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29554027/changes-in-optical-density-of-postlens-fluid-reservoir-during-2-hours-of-scleral-lens-wear
#6
Muriel M Schornack, Cherie B Nau
OBJECTIVES: Debris accumulation in the postlens fluid reservoir during scleral lens wear is clinically observed. We evaluated a method to quantify increases in turbidity of the postlens fluid reservoir by assessing changes in optical density of the fluid over time and compared these changes during 2 hr of scleral lens wear using three different lens designs. METHODS: Thirty-five patients (age, mean [SD], 29 [7] years) with no history of eye disease were enrolled in the study...
March 16, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29533244/thin-rigid-contact-lens-used-in-vitreous-retinal-surgery-for-corneal-protection-a-randomized-controlled-trial
#7
Zizhong Hu, Yuzhi Ding, Xinhua Zheng, Songtao Yuan, Jia Li, Ping Xie, Qinghuai Liu
PURPOSE: To design a rigid contact lens (CL) to be used in combination with a wide-angle viewing system and analyze its protection for corneal epithelial during vitreous-retinal surgery. METHODS: A thin and lightweight rigid CL was designed and constructed. The impact of the CL on the visualized fundus range was evaluated using a concrete eye model. Patients with severe proliferative diabetic retinopathy (PDR) were randomized to either the CL group, corneal protective agent (CPA) group, or balanced salt solution (BSS) group...
March 12, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29505434/ocular-impression-taking-which-material-is-best
#8
Jennifer M Turner, Christine Purslow, Paul J Murphy
OBJECTIVES: To assess the efficacy and effect on clinical signs of a polyvinylsiloxane (Tresident; Shütz Dental Group GmbH, Germany) compared with an irreversible hydrocolloid (Orthoprint; Zhermack SpA, Badia Polesine, Italy) for ocular impression-taking. METHODS: Twenty subjects were recruited (13 female and 7 male), with mean age 31.1±4.6 years (SD) (range 25.8-39.7). Subjects attended for 2 sessions, each of 1-hr duration, on 2 separate days. Each session was scheduled at the same time on each day...
February 28, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29489498/analysis-of-two-orthokeratology-lens-designs-and-comparison-of-their-optical-effects-on-the-cornea
#9
Rémy Marcotte-Collard, Patrick Simard, Langis Michaud
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 January 2013 and August 2015. Group A included the first 64 subjects fitted with a 4-curve lens design (Paragon CRT; Paragon) who met the inclusion criteria, whereas group B included the same number of subjects fitted with a 5-curve lens design (Dreamlens; Polymer Technology, Rochester, NY)...
February 27, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29489497/association-of-axial-length-growth-and-topographic-change-in-orthokeratology
#10
Eun Jung Lee, Dong Hui Lim, Tae-Young Chung, Joo Hyun, Jisang Han
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 every posttreatment visit were analyzed. Optical map topographies from baseline- and posttreatment-stabilized corneas were analyzed to calculate the refractive power difference between the apex and the periphery (apex-periphery refractive power difference [ARPD]), which estimates the change of peripheral refraction...
February 27, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29489496/in-vivo-confocal-microscopic-study-of-hard-contact-lens-induced-lipid-keratopathy-secondary-to-corneal-neovascularization-in-a-rabbit-hypercholesterolemic-model
#11
Yi-Chen Sun, Li-Chuan Yang, Fung-Rong Hu, Chung-Tien Lin, Yan-Ming Chen, Wei-Li Chen
OBJECTIVES: In vivo confocal microscopy was used to observe the morphological presentations and anatomical correlations between corneal neovascularization (NV) and intracorneal lipid deposition in a rabbit model of contact lens (CL)-induced lipid keratopathy secondary to corneal NV. METHODS: Rabbits were divided into 3 groups: (1) 8-week normal diet, (2) 8-week high-cholesterol diet, and (3) 4-week normal diet followed by 4-week high-cholesterol diet. Corneal NV was induced by closed-eye CL...
February 27, 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29688957/tap-water-and-risk-of-acanthamoeba-keratitis-in-rigid-gas-permeable-lens-wearers-sacred-cow-or-culprit-erratum
#12
(no author information available yet)
No abstract text is available yet for this article.
May 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29688955/chemicals-in-preservative-free-tears-branded-and-generic
#13
Mary Gao, Gloria Wu
No abstract text is available yet for this article.
May 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29462056/exposure-to-tap-water-puts-a-contact-lens-wearer-at-greater-risk-of-exposure-to-acanthamoeba
#14
LETTER
Amy Nau, Deepinder K Dhaliwal
No abstract text is available yet for this article.
March 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/29462055/tap-water-and-risk-of-acanthamoeba-keratitis-in-rigid-gas-permeable-lens-wearers-sacred-cow-or-culprit
#15
LETTER
Dmitry S Mirsayafov, Timothy G Albert, Andrei N Shmakov, Polina V Asitinskaya
No abstract text is available yet for this article.
March 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/28617726/comparative-analysis-of-peripheral-corneal-geometry-in-health-and-keratoconus
#16
Enric Mas-Aixala, Joan Gispets, Núria Lupón, Genís Cardona
OBJECTIVES: To describe and compare corneal peripheral angles in normal and keratoconic eyes, to gain a better understanding of the topography of the periphery of the cornea in keratoconus and assist practitioners in the selection and fitting of large diameter contact lenses. METHODS: Eighty-eight eyes were included in the study, divided into three groups: healthy (A0, 28 eyes), keratoconus at stage I according to the Amsler-Krumeich classification (AI, 33 eyes) and keratoconus at stages II to IV (AII, 27 eyes)...
March 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/28410280/long-term-impacts-of-orthokeratology-treatment-on-sub-basal-nerve-plexus-and-corneal-sensitivity-responses-and-their-reversibility
#17
María Nombela-Palomo, Gema Felipe-Marquez, Miguel Angel Teus, Jose Luis Hernandez-Verdejo, Amelia Nieto-Bona
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 OK treatment for one year. Fifteen non-contact lens wearers served as controls. At the time points baseline, one year of treatment, and one month after removing the OK lenses, two tests were conducted: corneal sensitivity (Cochet-Bonnet esthesiometer) and SBNP imaging by in vivo confocal microscopy...
March 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/28328727/strategies-for-deep-anterior-lamellar-keratoplasty-after-hydrops-in-keratoconus
#18
Matthias Fuest, Jodhbir S Mehta
Corneal hydrops affects approximately 2.5% of keratoconus (KC) cases, predominantly young males approximately 25 years of age with steep cones. Often, patients are left with a vision-reducing corneal scar frequently necessitating surgical treatment. Penetrating keratoplasty (PK) has worse survival outcomes in hydrops than in general KC cases. Deep anterior lamellar keratoplasty (DALK) is a nonpenetrating technique believed to achieve equal or better outcomes in visual acuity, graft survival, endothelial rejection rates, and endothelial cell survival in comparison with PK, while maintaining globe integrity and the patients' Descemet membrane (DM) and endothelium...
March 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/27861262/tear-film-osmolarity-in-response-to-long-term-orthokeratology-treatment
#19
Amelia Nieto-Bona, María Nombela-Palomo, Gema Felipe-Márquez, Miguel A Teus
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 experiments, and TFO was measured using the TearLab osmolarity system. In experiment 1, TFO measurements were made in 77 right eyes of 23 non-CL wearers, 26 hydrogel wearers, and 28 OK wearers...
March 2018: Eye & Contact Lens
https://www.readbyqxmd.com/read/27749472/higher-order-aberrations-after-cyclopentolate-tropicamide-and-artificial-tear-drops-application-in-normal-eyes
#20
Negin Amirshekarizadeh, Hassan Hashemi, Ebrahim Jafarzadehpur, Ali Mirzajani, Abbasali Yekta, Mehdi Khabazkhoob
PURPOSE: To determine the effect of cyclopentolate, tropicamide, and artificial tear drops on higher-order aberrations (HOAs) in normal eyes with OPD-Scan III (Nidek Inc., Tokyo, Japan). METHODS: In this study, 189 eyes of individuals aged 20 to 35 years were selected as samples. Inclusion criteria were a corrected visual acuity of 20/20 or better, a minimum size of about 5 mm for the pupil in the dark, hyperopia and myopia less than 5 D, and astigmatism less than 2 D...
March 2018: Eye & Contact Lens
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