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Soft contact lens

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https://www.readbyqxmd.com/read/29033270/a-survey-of-contact-lens-related-complications-in-a-tertiary-hospital-in-china
#1
Weiwei Li, Xuguang Sun, Zhiqun Wang, Yang Zhang
PURPOSE: To describe the type of complications related to contact lens (CL) wear in a tertiary hospital in XX, China. METHODS: A retrospective study of 141 patients who complained discomfort after wearing contact lens on an outpatient basis of XX Hospital were conducted from the January 2012 to December 2015. The data included patients' demographics, lens type, history, slit-lamp examination, reports of corneal scrapings, culture, and examination of in vivo confocal microscopy...
October 12, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29017826/disability-glare-in-soft-multifocal-contact-lenses
#2
Siegfried Wahl, Luise Fornoff, G Alex Ochakovski, Arne Ohlendorf
PURPOSE: The study investigated the effect of the design of multifocal contact lenses on the sensitivity to contrast and disability glare. METHODS: Contrast sensitivity was measured in 16 young adults (mean age: 25.5±2.5years) at a distance of 2m under two conditions: no-glare and glare. Two designs (Center Near and Center Distance) of the Biofinity soft contact lens were used to simulate correction for presbyopes, while a correction with single vision trial lenses and contact lenses acted as controls...
October 7, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28993070/the-effect-of-soft-contact-lens-thickness-in-visual-function-after-intracorneal-ring-segments-surgery
#3
G Carracedo, J Canales, P Gonzalez, A Rechionni, C Carpena-Torres, J Carballo-Álvarez
OBJECTIVE: To study the influence of soft contact lens (SCL) central thickness and material in keratoconus on visual function after intracorneal ring segment (ICRS) surgery. METHODS: A pilot, experimental, prospective, cross-sectional and double-blind study was performed. Fourteen keratoconus patients with age range of 34.75±9.22years (7 males and 7 females) with ICRS implanted were involved in the study. Two different SCL materials [Hioxifilcon A (G-5X/p-GMA/HEMA) and Lucifilcon A (silicone-hydrogel)] with four different central thicknesses (0...
October 6, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28968299/contact-lens-compliance-with-ophthalmologists-and-other-health-professionals
#4
Ayse Guzin Taslipinar Uzel, Mehmet Murat Uzel, Nilay Yuksel, Emine Kalkan Akcay
PURPOSE: To assess the compliance with contact lens (CL) use among ophthalmologists and other health professionals, and to identify the main noncompliant behaviors. METHODS: A cross-sectional, comparative study was designed for soft CL wearers. Twenty-five ophthalmologists, 24 medical doctors other than ophthalmologists, 20 nurses (health professionals), and 52 lay people (members of the public) subjects were included in the interview. The compliance rate for each behavior were determined and compared...
September 29, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28965795/acanthamoeba-keratitis-in-noncompliant-soft-contact-lenses-users-genotyping-and-risk-factors-a-study-from-cairo-egypt
#5
Eman E Taher, Eman M H Méabed, Islam Abdallah, Wafaa Y Abdel Wahed
Acanthamoeba keratitis (AK) is a severe corneal infection that may occur as a serious outcome of improper use of contact lenses (CL). OBJECTIVES: The study aimed to diagnose AK in soft CL users presenting with infectious keratitis, and to identify the prevalent genotypes isolated from different cases. Another aim was to determine the CL hygiene-related risk behaviors, and to explore the risk of water exposure for developing AK. METHODS: A cross sectional study was performed...
September 28, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28953599/evaluation-of-pigment-distribution-and-depth-analysis-methods-for-decorative-soft-contact-lenses
#6
Yusuke Nomura, Hitomi Toida, Chie Fukui, Shigemi Kai, Ryusuke Nakaoka, Reiko Kato, Miyuki Uematsu, Koichi Ono, Atsushi Kanai, Yuji Haishima
OBJECTIVES: This study evaluates pigment component distribution and depth in decorative soft contact lenses (DSCLs) using a variety of analytical methods. METHODS: We sampled 18 DSCLs using optical microscopy, optical coherence tomography analysis, Z-stack analysis, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX), and time-of-flight secondary ion mass spectrometry (TOF-SIMS) to evaluate the distribution and depth of pigment components...
September 26, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28952979/intermediate-term-outcomes-of-early-posttrabeculectomy-bleb-leaks-managed-by-large-diameter-soft-bandage-contact-lens
#7
SriRamani Gollakota, Chandra S Garudadri, Ashik Mohamed, Sirisha Senthil
PURPOSE: To study the outcomes of large diameter soft bandage contact lens (BCL) in managing early trabeculectomy bleb leak. MATERIALS AND METHODS: Of 972 eyes that underwent fornix-based trabeculectomy between 2011 and 2015, 19 eyes with bleb leak with at least 1 year follow-up were eligible. Bleb leak was conservatively managed using large diameter BCL (≥15.5 mm in diameter). Success was defined as complete, if bleb leak resolved and the intraocular pressure (IOP) was ≥5 and ≤18 mm Hg with no additional antiglaucoma medication and failure if surgical intervention was needed...
August 4, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28952168/contact-lens-trends-over-three-decades-in-a-hospital-based-practice-in-india
#8
Rajni Rajan, Rajeswari Mahadevan, Ann Mary Thomas, Pradipta Bhattacharjee
BACKGROUND: Contact lens fittings in a hospital-based practice are different from those in private practices because of specialised conditions. Few studies have been published on material preferences of such wearers, especially in long-term wearers. The aim of this study is to document contact lens prescribing trends in a hospital-based practice among long-term lens wearers and to identify their demographic profile. METHODS: Subjects reporting to a contact lens clinic of a tertiary eye-care centre in India from 1 January 2014 to 31 December 2014, with a minimum of five years of lens wear, were included in the study...
September 26, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28945646/efficacy-of-toric-contact-lenses-in-fitting-and-patient-reported-outcomes-in-contact-lens-wearers
#9
Stephanie M Cox, David A Berntsen, Katherine M Bickle, Jessica H Mathew, Daniel R Powell, B Kim Little, Kathrine Osborn Lorenz, Jason J Nichols
OBJECTIVES: To assess whether patient-reported measures are improved with soft toric contact lenses (TCLs) compared with soft spherical contact lenses (SCLs) and whether clinical time needed to fit TCL is greater than SCL. METHODS: Habitual contact lens wearers with vertexed spherical refraction +4.00 to +0.25 D or -0.50 to -9.00 D and cylinder -0.75 to -1.75 DC were randomly assigned to be binocularly fitted into a TCL or SCL, and masked to treatment assignment...
September 21, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28945644/effects-of-contact-lens-wear-on-biometry-measurements-for-intraocular-lens-calculations
#10
Jay J Meyer, Michelle J Kim, Terry Kim
OBJECTIVES: To determine the effects of contact lens (CL) wear on biometry measurements for cataract surgery and whether a CL hiatus can reduce the prediction error of intraocular lens (IOL) calculations. METHODS: Retrospective, interventional case series of eyes that received repeat biometry measurements for IOL calculations after discontinuing hard or soft CLs for at least 14 days. PRIMARY OUTCOME MEASURES: intersession change in axial length, average keratometry, astigmatism, and axis...
September 21, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28940531/tear-film-evaluation-and-management-in-soft-contact-lens-wear-a-systematic-approach
#11
REVIEW
Laura E Downie, Jennifer P Craig
The human tear film is a highly ordered structure consisting of a thin layer of lipid on the surface and a thicker aqueous-mucin phase, which increases in mucin concentration toward the corneal epithelial cell layer. The health of the tear film and ocular surface influences the likelihood of being able to achieve successful contact lens wear. Contact lens discomfort and dryness are the most frequent reasons why contact lens wearers experience reduced wearing times, which can eventually lead to contact lens discontinuation...
September 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28932340/contact-lenses-for-keratoconus-current-practice
#12
Marilita M Moschos, Eirini Nitoda, Panagiotis Georgoudis, Miltos Balidis, Eleftherios Karageorgiadis, Nikos Kozeis
BACKGROUND: Keratoconus is a chronic, bilateral, usuallly asymmetrical, non-inflammatory, ectatic disorder, being characterized by progressive steepening, thinning and apical scarring of the cornea. Initially, the patient is asymptomatic, but the visual acuity gradually decreases, resulting in significant vision loss due to the development of irregular astigmatism, myopia, corneal thinning and scarring. The classic treatment of visual rehabilitation in keratoconus is based on spectacles and contact lenses (CLs)...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28927731/effect-of-contact-lens-surface-properties-on-comfort-tear-stability-and-ocular-physiology
#13
Maria Vidal-Rohr, James S Wolffsohn, Leon N Davies, Alejandro Cerviño
AIM: Retrospective analysis of different contact lens wearing groups suggests lens surface lubricity is the main factor influencing contact lens comfort. However, the examined commercially available contact lenses differ in material and design as well as surface properties. Hence this study isolates the contribution of lens surface properties using an ultra-thin coating technology. METHODS: Nineteen habitual contact lens wearers (21.6±1.7years) wore formofilcon B soft monthly disposable contact lenses with and without coating technology modified surface properties for a month each in a randomised double-masked cross-over study...
September 15, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28876138/aetiology-of-acquired-blepharoptosis-in-young-adults
#14
Sulakshan Rasiah, Thomas G Hardy, James E Elder, Cheng Y Ng, Mpopi Lenake, Alan A McNab
PURPOSE: To identify the causes of blepharoptosis in young adults, and explore cases that do not fit into current diagnostic categories. METHODS: A retrospective cohort study of all patients aged 18-40 years ("young adults") with acquired blepharoptosis that presented to two specialist ocular plastics practices and a paediatric ophthalmologist over a period of up to 25 years. Each patient was classified according to diagnosis. Where the diagnosis was uncertain, the files were examined in detail to try and further establish a cause...
September 6, 2017: Orbit
https://www.readbyqxmd.com/read/28871604/rethinking-contact-lens-aftercare
#15
REVIEW
Nathan Efron, Philip B Morgan
The evolution of contact lens technology and clinical practice over the past three decades has been remarkable, with dramatic improvements in material biocompatibility, better lens designs and care systems, and more flexible and convenient modalities of wear. However, our approach to the aftercare examination has remained conservative, with the general modus operandi having not fully evolved from the difficult, early years of fitting non-regular replacement rigid and low water content hydrogel lenses. In this paper, we review current aftercare practice and in particular, the preferred frequency that lens wearers should return for routine visits and the appropriateness of regulations governing contact lens prescription expiry...
September 4, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28868803/epidemiology-of-contact-lens-induced-infiltrates-an-updated-review
#16
REVIEW
Kelsy R Steele, Loretta Szczotka-Flynn
Corneal infiltrative events (CIEs) are well established as a risk associated with soft contact lens wear. The incidence of symptomatic CIEs during extended soft lens wear ranges from 2.5 to six per cent; when asymptomatic CIEs are included, the incidence can be as high as 20-25 per cent. In daily soft lens wear, the annual incidence of symptomatic CIEs is about three per cent. There are various accepted methods of categorising CIEs, and a scoring system based on clinical signs and symptoms is a good approach to grade severity...
September 4, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28858005/preinflammatory-signs-in-established-reusable-and-disposable-contact-lens-wearers
#17
Cecilia Chao, Fiona Stapleton, Mark D P Willcox, Blanka Golebiowski, Kathryn Richdale
SIGNIFICANCE: Established reusable contact lens (CL) wearers show higher tear inflammatory cytokine concentrations and greater conjunctival metaplasia in the region covered by standard soft CLs. The balance of proinflammatory to anti-inflammatory cytokines, but not individual tear cytokine concentrations, was associated with self-reported CL discomfort. PURPOSE: Daily disposable (DD) lenses are often used to improve CL discomfort, but the effect on ocular inflammatory responses has not been fully investigated...
August 29, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28856508/correction-of-hyperopia-with-astigmatism-following-radial-keratotomy-with-daily-disposable-plus-spherical-contact-lens-a-case-report
#18
Yun-Wen Chen, Jiahn-Shing Lee, Chiun-Ho Hou, Ken-Kuo Lin
PURPOSE: To report the refractive correction in a case of hyperopia and astigmatism following radial keratotomy. METHODS: A case report. RESULTS: A 47-year-old woman, who had undergone refractive surgery for radial keratotomy in both eyes 22 years before the present study, presented to our clinic with blurred vision. Her best corrected visual acuity, with spectacle correction of +3.50 DS/-1.50 DCX130° in the right eye and +3.75 DS/-1.50 DCX80° in the left eye, was 0...
August 30, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28822704/corneal-confocal-microscopy-and-dry-eye-findings-in-contact-lens-discomfort-patients
#19
Aysun Sanal Dogan, Canan Gurdal, Nese Arslan
OBJECTIVES: To evaluate the corneal confocal microscopy and dry eye findings in patients with contact lens discomfort. METHODS: The study included 3 groups of participants: Contact lens wearers using silicone hydrogel soft contact lenses who are symptomatic (CLD, n=15) or asymptomatic (ACL, n=11) and non-wearers as controls (n=14). Duration of contact lens wear, Ocular Surface Disease Index (OSDI) questionnaire responses, fluorescein tear break-uptime (FBUT), and corneal confocal microscopy findings were recorded...
August 16, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28811096/topical-anaesthetic-use-prior-to-rigid-gas-permeable-contact-lens-fitting
#20
Felicity R Gill, Paul J Murphy, Christine Purslow
PURPOSE: To investigate effect of topical anaesthetic (TA) during gas permeable (GP) contact lens (CL) fitting on subjective and objective measures of patient anxiety. METHODS: 47 subjects (mean±sd age=26.9±4.9years; soft CL wearers, 18, neophytes, 29). Each subject randomly assigned to Group A or B, and attended on two occasions, one week apart. First visit: subject received bilaterally either a single drop of TA (0.5% proxymetacaine) (Group A) or placebo (0...
August 12, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
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