Abstract:
PURPOSE:To establish if silicone hydrogel (S-H) contact lenses could be a risk factor for Acanthamoeba infection by facilitating the attachment of trophozoites to their surface and transfer to the cornea and to determine the effect Acanthamoeba culture technique, patient wear, and Pseudomonas biofilm coating have on attachment to the S-H lens. DESIGN:Experimental material study. PARTICIPANTS AND CONTROLS:Attachment to a S-H lens was compared with that of a conventional hydrogel control lens. Sixteen replicates were carried out for both lens types under each test condition. METHODS:Unworn S-H (PureVision; Bausch & Lomb, Kingston-Upon-Thames UK) and conventional hydrogel (Acuvue; Vistakon, Johnson & Johnson, Jacksonville, FL USA) lens quarters were incubated for 90 minutes in suspensions of liquid or plate-cultured Acanthamoeba castellanii trophozoites. Unworn, worn, and Pseudomonas biofilm coated S-H and hydrogel quarters were incubated for 90 minutes with plate-cultured trophozoites. MAIN OUTCOME MEASURES:Trophozoites attached to one surface of each lens quarter were counted by direct light microscopy. Logarithmic transformation of data allowed the use of a parametric analysis of variance. RESULTS:Lens polymer had a significant effect on attachment (P < 0.001), with higher numbers of trophozoites attaching to the S-H lens. Culture technique also had a significant effect on attachment (P = 0.013), with higher numbers of liquid-cultured organisms attaching to both lens types. A significant increase in attachment was demonstrated with worn and Pseudomonas biofilm-coated hydrogel lenses (P < 0.001); however, this difference was not seen with the S-H lens. CONCLUSIONS:Acanthamoebal attachment to the S-H lenses was significantly greater than to the conventional hydrogel. Liquid-cultured trophozoites demonstrated a higher affinity for the lenses tested. Wear and bacterial biofilm coating had no effect on attachment to S-H lenses. The increased attachment found with the S-H lens may be an inherent characteristic of the polymer or a side effect of the surface treatment procedure to which the lenses are exposed. It is possible that S-H lenses are at greater risk of promoting Acanthamoeba infection if exposed to the organism because of the enhanced attachment characteristic of this new material.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Beattie TK,Tomlinson A,McFadyen AK,Seal DV,Grimason AMdoi
10.1016/S0161-6420(02)01971-1subject
Has Abstractpub_date
2003-04-01 00:00:00pages
765-71issue
4eissn
0161-6420issn
1549-4713pii
S0161-6420(02)01971-1journal_volume
110pub_type
杂志文章相关文献
OPHTHALMOLOGY文献大全abstract::Ten eyes of eight patients with open-angle glaucoma (OAG) had neodymium (Nd):YAG trabeculopuncture performed in an investigational protocol as an alternative to surgical intervention. In each, at four to six sites in the mid-trabecular meshwork, three to six superimposed applications were made (2 to 6 mJ). In four of ...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(85)33932-5
更新日期:1985-07-01 00:00:00
abstract:PURPOSE:To obtain objective measurements of corneal light scattering after excimer laser keratectomy, and to evaluate the relation of light scattering to clinical haze grading and visual acuity. METHODS:The authors measured best-corrected visual acuity, subjective clinical haze grade, and corneal light-scattering inde...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(96)30674-x
更新日期:1996-03-01 00:00:00
abstract:OBJECTIVE:To compare laser in situ keratomileusis (LASIK) with photorefractive keratectomy (PRK) in the correction of myopia from -2.00 to -5.50 diopters. DESIGN:Prospective, randomized, paired clinical trial. PARTICIPANTS:Fifty-two eyes of 26 myopic patients were enrolled in the study. INTERVENTION:Each patient rec...
journal_title:Ophthalmology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/S0161-6420(99)90084-2
更新日期:1999-02-01 00:00:00
abstract:PURPOSE:To evaluate the clinical features, treatment, and prognosis of patients with uveal metastasis from lung cancer. DESIGN:Retrospective chart review. PARTICIPANTS:There were 194 patients with a diagnosis of uveal metastasis from lung cancer. INTERVENTION:Radiotherapy, chemotherapy, enucleation, or observation. ...
journal_title:Ophthalmology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ophtha.2013.07.014
更新日期:2014-01-01 00:00:00
abstract:PURPOSE:To show that chiasmal hypoplasia or aplasia need not be an isolated developmental anomaly and to examine the spectrum of associated clinical findings to explore the possibility that these patients may represent a phenotypic manifestation of a developmental gene anomaly. DESIGN:An observational case series. PA...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/S0161-6420(99)90539-0
更新日期:1999-12-01 00:00:00
abstract::Cystic intranasal masses were found in seven newborn infants with congenital dacryocystocele. The cysts were a direct extension of the nasolacrimal duct, located beneath the inferior turbinate. Nasal obstruction was present in three infants and was severe enough to cause respiratory distress in two neonates with bilat...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(91)32149-3
更新日期:1991-08-01 00:00:00
abstract:PURPOSE:To test if improving optical coherence tomography (OCT) resolution and scanning speed improves the visualization of glaucomatous structural changes as compared with conventional OCT. DESIGN:Prospective observational case series. PARTICIPANTS:Healthy and glaucomatous subjects in various stages of disease. MET...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ophtha.2007.06.038
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVE:To compare pro re nata (PRN) and monthly injections of 0.5 mg ranibizumab in retinal vein occlusion (RVO) patients stabilized by monthly injections. DESIGN:Randomized, open-label, vision-examiner masked, 15-month study. PARTICIPANTS:Subjects with macular edema secondary to branch or central RVO. METHODS:Su...
journal_title:Ophthalmology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ophtha.2014.06.011
更新日期:2014-12-01 00:00:00
abstract:PURPOSE:To evaluate the performance of retinal specialists in detecting retinal fluid presence in spectral domain OCT (SD-OCT) scans from eyes with age-related macular degeneration (AMD) and compare performance with an artificial intelligence algorithm. DESIGN:Prospective comparison of retinal fluid grades from human ...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ophtha.2020.06.038
更新日期:2021-01-01 00:00:00
abstract:OBJECTIVE:To determine the usefulness of "routine" lacrimal sac biopsy to evaluate unsuspected neoplasm or systemic disease in patients with acquired nasolacrimal duct obstruction. DESIGN:Noncomparative, interventional case series with histopathologic correlation. PARTICIPANTS:Review of charts revealed histopathologi...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(02)01082-5
更新日期:2002-07-01 00:00:00
abstract:PURPOSE:To define the incidence of pseudophakic macular edema (PME) after cataract surgery and to identify contributory risk factors. DESIGN:Retrospective database study of electronic medical records (EMRs). PARTICIPANTS:A total of 81984 eyes undergoing cataract surgery between December 2010 and December 2014 from 8 ...
journal_title:Ophthalmology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ophtha.2015.10.001
更新日期:2016-02-01 00:00:00
abstract:PURPOSE:Assess the impact of false-positives (FP), false-negatives (FN), fixation losses (FL), and test duration (TD) on visual field (VF) reliability at different stages of glaucoma severity. DESIGN:Retrospective. PARTICIPANTS:A total of 10 262 VFs from 1538 eyes of 909 subjects with suspect or manifest glaucoma and...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ophtha.2017.04.035
更新日期:2017-11-01 00:00:00
abstract::Forty-one of 97 eyes with retinal pigment epithelium decompensation (RPED) were treated with monochromatic green argon laser photocoagulation to the focal area of RPE staining detected in the late fluorescein transit. Nineteen eyes were treated because of progressive visual deterioration. The other 22 eyes already had...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(84)34118-5
更新日期:1984-12-01 00:00:00
abstract::Thirteen patients complained of recent fluctuating aching of one orbit, punctuated by stabbing pains. All had exquisite point tenderness over the trochlea and in half of the patients the pain was aggravated by eye movement. Standardized A-scan echography demonstrated swelling of the peritrochlear tissue and thickening...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(84)34198-7
更新日期:1984-09-01 00:00:00
abstract:PURPOSE:To compare the efficacy, safety, and risk factors for failure of standalone ab interno gelatin microstent implantation with mitomycin C (MMC) versus trabeculectomy with MMC. DESIGN:International, multicenter, retrospective interventional cohort study. PARTICIPANTS:Three hundred fifty-four eyes of 293 patients...
journal_title:Ophthalmology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ophtha.2017.05.004
更新日期:2017-11-01 00:00:00
abstract:PURPOSE:The aim of this study was to describe a new technique for transscleral suturing of posterior chamber intraocular lenses (PCIOLs) without intraocular knots. DESIGN:Retrospective noncomparative case series. PARTICIPANTS:Twenty-four eyes underwent implantation of PCIOLs with this new technique. METHODS:Suture f...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/S0161-6420(03)00467-6
更新日期:2003-07-01 00:00:00
abstract:PURPOSE:We compared smartphone fundus photography, nonmydriatic fundus photography, and 7-field mydriatic fundus photography for their abilities to detect and grade diabetic retinopathy (DR). DESIGN:This was a prospective, comparative study of 3 photography modalities. PARTICIPANTS:Diabetic patients (n = 300) were re...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ophtha.2015.06.011
更新日期:2015-10-01 00:00:00
abstract::Hydrogel keratophakia is a new form of lamellar refractive surgery which, in theory, can deal with almost all forms of refractive error. We examined the histopathological effects of several types of hydrogel materials on the cornea of non-human primates. With the exception of one type of hydrogel material, which was a...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(85)33869-1
更新日期:1985-09-01 00:00:00
abstract:OBJECTIVE:To describe three cases of squamous cell carcinoma of the conjunctiva presenting with corneal and scleral inflammation, thinning, and perforation without any tumor formation. DESIGN:Three case reports. PARTICIPANTS:Three male subjects aged 76, 66, and 61 years. INTERVENTION:The subjects had symptoms of ext...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(00)00585-6
更新日期:2001-03-01 00:00:00
abstract:PURPOSE:To determine when posterior vitreous detachments (PVDs) develop after phacoemulsification and aspiration combined with foldable intraocular lens implantation. DESIGN:Prospective, consecutive case series. PARTICIPANTS:A total of 575 eyes without a PVD preoperatively were studied prospectively and followed for ...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ophtha.2012.03.050
更新日期:2012-10-01 00:00:00
abstract:OBJECTIVE:To determine the cost-effectiveness of cataract surgery worldwide and to compare it with the cost-effectiveness of comparable medical interventions. DESIGN:Meta-analysis. PARTICIPANTS:Approximately 12,000 eyes in the studies selected. METHODS:Articles were identified by searching the literature using the p...
journal_title:Ophthalmology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ophtha.2006.12.013
更新日期:2007-09-01 00:00:00
abstract::Progression of the maculopathy in North Carolina macular dystrophy (NCMD) was not well documented. Thus, the author recently examined 22 affected members of the original kindred. Evidence of progression of the macular disease was sought through comparison of the recent fundus findings with old fundus photographs and f...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(89)32655-8
更新日期:1989-12-01 00:00:00
abstract:OBJECTIVE:This study aimed to provide a comparative analysis of American population-based prevalence of uncorrected binocular distance visual acuity in Hispanics and non-Hispanics. DESIGN:The study design was a population-based survey. PARTICIPANTS:Data from the Hispanic Health and Nutrition Examination Survey betwee...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/S0161-6420(98)93042-1
更新日期:1998-03-01 00:00:00
abstract::The zonules of 27 postmortem eyes were studied grossly using a histologic staining technique that allowed easy visualization of the zonules. Large disinsertions of the zonules were present in 5 of the 20 eyes that had undergone extracapsular cataract extraction (ECCE). ...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(87)33423-2
更新日期:1987-05-01 00:00:00
abstract::Neuropathic pain is caused by a primary lesion or dysfunction of the nervous system and can occur in the cornea. However, neuropathic corneal pain (NCP) is currently an ill-defined disease. Patients with NCP are extremely challenging to manage, and evidence-based clinical recommendations for the management of patients...
journal_title:Ophthalmology
pub_type: 杂志文章,评审
doi:10.1016/j.ophtha.2017.08.004
更新日期:2017-11-01 00:00:00
abstract:PURPOSE:Inflammation of the wall of the eyeball may extend to adjacent ocular tissues with blinding consequences and may be associated with potentially lethal systemic disorders. This study was undertaken to evaluate the ocular complications and systemic disease associations of the different types of scleritis and epis...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(94)31325-x
更新日期:1994-02-01 00:00:00
abstract:PURPOSE:A trabeculectomy is frequently combined with extracapsular cataract surgery to minimize the risks of further optic nerve damage associated with intraocular pressure (IOP) elevations after cataract surgery in eyes with glaucoma. Acute IOP elevations still occur after this combined surgery. The author evaluated t...
journal_title:Ophthalmology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0161-6420(93)31603-9
更新日期:1993-05-01 00:00:00
abstract::The authors used the Humphrey Retinal Analyzer to study the effect of acute changes in intraocular pressure (IOP) on the topography of the optic nerve head in normotensive and hypertensive eyes of cynomolgus monkeys. Chronically elevated IOP was produced monocularly in monkeys by argon laser angle treatment. In 8 hype...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(91)32345-5
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the responsiveness of 2 health-related quality-of-life (HRQOL) questionnaires, the Adult Strabismus-20 (AS-20) and National Eye Institute Visual Function Questionnaire-25 (VFQ-25), to changes in HRQOL after strabismus surgery. DESIGN:Cohort study. PARTICIPANTS:We included 106 adults (aged 18-84 ...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ophtha.2010.03.042
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVE:To determine if instrument cleaning techniques affect the rate of diffuse lamellar keratitis (DLK) after laser in situ keratomileusis (LASIK). DESIGN:Retrospective case series. PARTICIPANTS:Two hundred ten eyes of 109 patients. METHODS:A record review was performed of all patients who underwent LASIK at th...
journal_title:Ophthalmology
pub_type: 杂志文章
doi:10.1016/s0161-6420(01)00876-4
更新日期:2002-02-01 00:00:00