Contact Lens & Anterior Eye最新文献

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International trends in rigid contact lens prescribing (2000–2023): An update 硬性隐形眼镜处方的国际趋势(2000-2023 年):更新。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-27 DOI: 10.1016/j.clae.2024.102255
{"title":"International trends in rigid contact lens prescribing (2000–2023): An update","authors":"","doi":"10.1016/j.clae.2024.102255","DOIUrl":"10.1016/j.clae.2024.102255","url":null,"abstract":"<div><h3>Purpose</h3><p>Rigid contact lenses have an important role in contact lens practice. The purpose of this work is to update earlier surveys by describing global trends in rigid lens fitting between 2000-2023.</p></div><div><h3>Method</h3><p>An annual contact lens prescribing survey was sent to eye care practitioners in up to 71 countries between 2000 and 2023. Data relating to 342,500 fits undertaken in 20 countries returning reliable longitudinal data were analysed in respect of rigid lens fitting, defined as the fitting of any design of a contact lens manufactured in a rigid material.</p></div><div><h3>Results</h3><p>Overall, rigid lens prescribing increased slightly over time, from 14.2 % of lens fits in 2000 to 15.2 % in 2023 (p &lt; 0.0001). However, post-hoc analysis shows that the change over time is best described as a decline between 2000 and 2012, followed by a steady increase subsequently. There were significant differences in rigid lens prescribing between countries (p &lt; 0.0001). The difference between the percentage of males fitted with rigid lenses, as a proportion of all contact lenses (12.7 %), and females (12.0 %) is significant (p &lt; 0.0001), although not clinically meaningful. Rigid lens wearers are older at fitting than soft lens wearers (38.7 vs 31.3 years, respectively) (p &lt; 0.0001). Analysis of 5,994 rigid lens fits prescribed currently (2019–2023) were categorised as: corneal sphere – 30 %; scleral and corneo-scleral – 28 %; corneal myopia control/orthokeratology – 21 %; and corneal complex (including toric, multifocal and monovision) – 16 %.</p></div><div><h3>Conclusion</h3><p>There has been a slight increase in rigid lens fitting during the second decade of this century. This increase is apparently due to a ‘repurposing’ of rigid lenses, with the growth of scleral/corneo-scleral and myopia control/orthokeratology lens fits essentially replacing conventional spherical corneal lens fits.</p></div>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1367048424001474/pdfft?md5=63e2cd10db2d6ed38442cb3d49aeb974&pid=1-s2.0-S1367048424001474-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new look at the myopia control efficacy of orthokeratology 重新审视角膜矫形术的近视控制效果。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-21 DOI: 10.1016/j.clae.2024.102251
{"title":"A new look at the myopia control efficacy of orthokeratology","authors":"","doi":"10.1016/j.clae.2024.102251","DOIUrl":"10.1016/j.clae.2024.102251","url":null,"abstract":"<div><h3>Purpose</h3><p>To evaluate the efficacy of orthokeratology contact lens wear in slowing the axial elongation of the eye in myopic children.</p></div><div><h3>Methods</h3><p>Data from three prospective studies, which evaluated the use of orthokeratology for slowing myopia progression in children in comparison to a parallel control group of distance, single-vision spectacle lens wearers over a 2-year period, were pooled together for analysis.</p></div><div><h3>Results</h3><p>Collectively, data from 125 orthokeratology and 118 control subjects were analyzed in this study. Of these, 101 (81 %) and 88 (75 %) orthokeratology and control subjects completed the 2-year follow-up period, respectively. Statistically significant differences in the change in axial length from baseline were found over time, between groups and for the time*group interaction (all p &lt; 0.001), indicating that the rate of increase in axial length over time was significantly lower in the orthokeratology versus the control group. The lower axial elongation of the orthokeratology versus the control group was statistically significant at all time points (all p &lt; 0.001), with significant differences being also present between each of the different pairs of time points (all p &lt; 0.001). The interactions of group with age, gender, mean spherical refractive error and ethnicity at baseline were not significant (p &gt; 0.05). The change in axial length at the 2-year visit in comparison to baseline for the orthokeratology and control groups were 0.41 ± 0.25 and 0.65 ± 0.30 mm, respectively, thus providing a treatment effect following 2-years of lens wear of 0.24 mm (95 % confidence intervals: 0.15 to 0.34 mm). About 40 % and 25 % of the orthokeratology subjects experienced remarkably low and high levels of myopia progression, respectively (2-years axial elongation: ≤0.30 mm and &gt;0.59 mm, respectively).</p></div><div><h3>Conclusions</h3><p>Orthokeratology lens wear slows the axial elongation of the eye in comparison to spectacle lens wear in myopic children. The use of these lenses for slowing myopia progression appears to be very effective and not effective at all in 40% and 25% of orthokeratology lens wearers, respectively.</p></div>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1367048424001437/pdfft?md5=2a3f1804c2044e39e739a9b9ec9241bd&pid=1-s2.0-S1367048424001437-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141437643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of midday removal and re-application of a scleral lens on fluid reservoir thickness, pre-lens tear film quality and visual acuity. 中午摘除和重新佩戴巩膜透镜对储液厚度、透镜前泪膜质量和视力的影响。
IF 3.2 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-18 DOI: 10.1016/j.clae.2024.102250
Rute J Macedo-de-Araújo, Ana Amorim-de-Sousa, José M González-Méijome
{"title":"Influence of midday removal and re-application of a scleral lens on fluid reservoir thickness, pre-lens tear film quality and visual acuity.","authors":"Rute J Macedo-de-Araújo, Ana Amorim-de-Sousa, José M González-Méijome","doi":"10.1016/j.clae.2024.102250","DOIUrl":"https://doi.org/10.1016/j.clae.2024.102250","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate whether the midday removal and re-application of scleral lenses (SL) influences fluid reservoir (FR) thickness, pre-lens tear film quality and visual acuity.</p><p><strong>Methods: </strong>Two clinical experiments were conducted. A total of 49 keratoconic eyes were evaluated for Part1(tear film and visual acuity analysis) and 12 keratoconic eyes for Part2 (FR thickness analysis). All subjects were wearing 16.4 mm SL for more than 12-months. Tear Film Surface Quality (TFSQ) was evaluated with Medmont E300 at more than 120 min of SL wear, 10 min after SL removal (pre-corneal TFSQ) and 5 min after re-apply the same SL. High and Low Contrast Visual Acuity (HCVA and LCVA) were also assessed with the SL on eye (before and after re-application). For Part2, Anterior OCT (MOptim MOcean4000, China) measurements were taken with and without the SL (at the same time points of Part1) and three outcomes were evaluated: FR thickness, SL thickness (control measurement) and corneal thickness.</p><p><strong>Results: </strong>Removing and re-applying a SL had a statistically significant positive impact on TFSQ, with an improvement from 0.26 ± 011 to 0.16 ± 0.08 (p = 0.001). This was accompanied by a statistically significant improvement in LogMAR HCVA (from 0.10 ± 0.09 to 0.08 ± 0.08, p < 0.001) and LCVA (from 0.39 ± 0.13 to 0.36 ± 0.13, p < 0.001). Regarding Part2 of the study, a statistically significant increase in FR thickness was observed after SL re-application (from 223.64 ± 48.08 µm to 267.81 ± 80.03 µm, p = 0.007). No changes in corneal thickness were observed.</p><p><strong>Conclusions: </strong>Midday removal and re-application of a scleral lens positively impacted pre-lens tear film surface quality, although the observed improvement in visual acuity does not constitute a clinically significant change. Clinicians should consider that removing and reapplying a scleral lens may result in an overestimation of the fluid reservoir thickness, which could affect clinical assessments and treatment decisions.</p>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141428072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Care practices of contact lens solutions and microbial contamination among wearers in Ghana 加纳隐形眼镜护理液的护理方法与配戴者的微生物污染。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-17 DOI: 10.1016/j.clae.2024.102252
{"title":"Care practices of contact lens solutions and microbial contamination among wearers in Ghana","authors":"","doi":"10.1016/j.clae.2024.102252","DOIUrl":"10.1016/j.clae.2024.102252","url":null,"abstract":"<div><h3>Purpose</h3><p>This study sought to assess contact lens solutions<span> care practices, and their microbial contamination among contact lens wearers in Ghana and to profile their antibiotic susceptibility pattern.</span></p></div><div><h3>Methods</h3><p>The study employed a biphasic approach which involved a cross-sectional design that investigated participants’ habits related to care for the solutions with a two-part questionnaire and a microbiological analysis of samples of contact lens care solutions of the participants for microbial contamination. A snowball sampling method provided access to 32 different contact lens wearers in four care facilities in Ghana. In most cases, the participants had no pre-existing familial relationship with each other or with the care facilities.</p></div><div><h3>Results</h3><p><span>Out of 32 samples of contact lens solutions, 30 were tested for microbial contamination. A total of 23 (76.67 %) samples of contact lens solution were found to be contaminated with </span><span><em>Enterobacter</em></span> sp. (34.80 %), <span><em>Pseudomonas</em></span> sp. (21.70 %), <span><em>Bacilli</em></span> sp. (21.70 %), <span><em>Klebsiella</em></span> sp. (17.20 %), and <em>Escherichia coli</em> (4.60 %). The duration of solution storage in the open bottle and nonadherence to manufacturer instructions for solution storage showed a statistically significant association with microbial contamination (<em>p</em> ≤ 0.05).</p></div><div><h3>Conclusion</h3><p>Contact lens care solutions have been found to harbour multiple antibiotic-resistant bacteria that are potentially pathogenic to the corneal surface. The contamination is associated with some unhealthy solution-care practices among wearers.</p></div>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141421583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes in bulbar conjunctival microcirculation and microvasculature during short-term scleral lens wearing and their associated factors 短期佩戴巩膜透镜期间球结膜微循环和微血管的变化及其相关因素。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-08 DOI: 10.1016/j.clae.2024.102159
{"title":"Changes in bulbar conjunctival microcirculation and microvasculature during short-term scleral lens wearing and their associated factors","authors":"","doi":"10.1016/j.clae.2024.102159","DOIUrl":"10.1016/j.clae.2024.102159","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Objective&lt;/h3&gt;&lt;p&gt;&lt;span&gt;&lt;span&gt;To explore the changes in microcirculation&lt;span&gt; and microvasculature of the &lt;/span&gt;&lt;/span&gt;bulbar conjunctiva during the short-term wearing of the &lt;/span&gt;scleral lenses (ScCL). And investigate the factors affecting the microcirculation and microvasculature of the bulbar conjunctiva.&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Methods&lt;/h3&gt;&lt;p&gt;&lt;span&gt;&lt;span&gt;In this prospective cross-sectional study, functional slit lamp biomicroscopy (FSLB) was used to image the &lt;/span&gt;ocular surface&lt;span&gt; microcirculation and microvascular images at two different sites (under the area of ScCL and outside of the area of ScCL) before (baseline) and during the wearing of ScCL at 0 h, 1 h, 2 h and 3 h. Anterior segment optical coherence tomography (AS-OCT) (RTVue, Optovue Inc, USA) was also used to image central post-lens tear film (PoLTF) and the morphology changes of the conjunctiva under the landing zone at the same time period. The semi-automatic quantification of microcirculation and microvasculature including vessel density (D&lt;/span&gt;&lt;/span&gt;&lt;sub&gt;box&lt;/sub&gt;&lt;span&gt;), vessel diameter&lt;span&gt; (D), axial blood flow velocity (Va) and blood flow volume (Q). And the morphological changes of conjunctiva and PoLTF fogging grading were evaluated manually. The changes in the microcirculation and microvasculature of the ocular surface, PoLTF fogging grade and conjunctival morphology were compared before and during the ScCL wearing at different time periods, and the relationship between them was analyzed.&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;p&gt;Nineteen eyes (11 right eyes, 8 left eyes) were analyzed in this study. Outside of the area of ScCL, the D&lt;sub&gt;box&lt;/sub&gt; before wearing lenses was less than that at 0 h (P = 0.041). The Q at baseline was greater than that after 1 h ScCL wearing (P = 0.026). Under the area of the ScCL, the Q at 1 h was less than that at baseline and 3 h. During the ScCL wearing, statistically significant conjunctival morphology changes were found among different time stages (baseline (0 μm), 0 h (113.18 μm), 2 h (138.97 μm), 3 h (143.83 μm) (all P <0.05). Outside the area of the ScCL, the morphology changes of the conjunctiva were negatively correlated with the changes of Va (P<0.001,r = -0.471) and Q (P = 0.003,r = -0.348),but positively correlated with the D&lt;sub&gt;box&lt;/sub&gt; (P = 0.001,r = 0.386). Under the area of ScCL, the morphology changes of the conjunctiva were negatively correlated with the Q (P = 0.012, r = -0.291). The fogging grade was positively correlated with the Q under the area of the ScCL (P = 0.005, r = 0.331).&lt;/p&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusions&lt;/h3&gt;&lt;p&gt;The microcirculation and microvasculature of the ocular surface and conjunctival morphology were changed after wearing ScCL in wearers, which indicated that the microvascular responses happened in the ScCL wearers and the severity of microvascular responses of the ocular surface related to the morphology changes of the conjunctiva. The quantification methods and findings in this stud","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141293875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Absorption and attachment of atropine to etafilcon A contact lenses 阿托品在依他菲康 A 隐形眼镜上的吸收和附着。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-08 DOI: 10.1016/j.clae.2024.102246
{"title":"Absorption and attachment of atropine to etafilcon A contact lenses","authors":"","doi":"10.1016/j.clae.2024.102246","DOIUrl":"10.1016/j.clae.2024.102246","url":null,"abstract":"<div><h3>Purpose</h3><p>Myopia (short-sightedness) is a growing vision problem worldwide. Currently atropine eye drops are used to control the progression of myopia but these suffer from potential lack of bioavailability and low ocular residence time. Commercially available myopia control contact lenses are also used to limit myopia progression, but neither atropine nor contact lenses individually completely stop progression. Development of myopia control contact lenses which could deliver therapeutic doses of atropine is thus desirable and may provide increased efficacy. This study was designed to explore the feasibility of attaching atropine to etafilcon A contact lenses through an esterification reaction.</p></div><div><h3>Methods</h3><p>Carboxylic acid groups on etafilcon A contact lenses were quantified using Toluidine Blue O. The carboxylic acid groups in etafilcon A contact lenses were activated using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC-HCl) and N-hydroxysuccinimide (NHS) crosslinkers after which atropine was added to undergo potential binding via esterification. Atropine was released from lenses by alkaline hydrolysis. Reverse phase high performance liquid chromatography (HPLC) was used to detect and quantify the released atropine and its degradation products in solution. Contact lenses that had not been activated by EDC-NHS (controls) were also examined to determine the amount of atropine that could be absorbed rather than chemically bound to lenses.</p></div><div><h3>Results</h3><p>Each etafilcon A contact lens contained 741.1 ± 5.5 µg carboxylic acid groups which may be available for esterification. HPLC had a limit of detection for atropine of 0.38 µg/mL and for tropic acid, an atropine degradation product, of 0.80 µg/mL. The limits of quantification were 1.16 µg/mL for atropine and 2.41 µg/mL for tropic acid in NH<sub>4</sub>HCO<sub>3</sub>. The etafilcon A lenses adsorbed up to 7.69 μg atropine when incubated in a 5 mg/mL atropine solution for 24 h. However, there was no evidence that atropine could be chemically linked to the lenses, as washing in a high concentration of NaCl removed all the atropine from the contact lenses with no atropine being subsequently released from the lenses after incubating in 0.01 N NH<sub>4</sub>HCO<sub>3</sub>.</p></div><div><h3>Conclusions</h3><p>Etafilcon A contact lenses contain free carboxylic acids which may be an appropriate option for attaching drugs such as atropine. Etafilcon A lenses adsorbed up to 7.69 μg atropine, which would be more than enough to deliver atropine to eyes to control myopia. However, atropine could not be chemically bound to the carboxylic acids of the etafilcon A lenses using this methodology.</p></div>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1367048424001383/pdfft?md5=26abd8cfb208cd043814bc7ffd9bfdef&pid=1-s2.0-S1367048424001383-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141293873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Discordant dry eye disease and chronic pain: A systematic review and meta-analysis. 不一致的干眼症和慢性疼痛:系统回顾和荟萃分析。
IF 3.2 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-07 DOI: 10.1016/j.clae.2024.102248
M Hoffmann, S Farrell, L H Colorado, K Edwards
{"title":"Discordant dry eye disease and chronic pain: A systematic review and meta-analysis.","authors":"M Hoffmann, S Farrell, L H Colorado, K Edwards","doi":"10.1016/j.clae.2024.102248","DOIUrl":"https://doi.org/10.1016/j.clae.2024.102248","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the relative contributions of objective and subjective indicators of dry eye disease (DED) in individuals with chronic pain conditions compared with controls.</p><p><strong>Methods: </strong>A systematic review and meta-analysis was conducted of studies that reported the signs and symptoms of DED and/or their prevalence in individuals with chronic pain compared with controls. International Association for the Study of Pain (IASP) International Classification of Diseases (ICD)-11 codes for chronic pain conditions were applied, and outcomes defined as DED signs and symptoms. A search strategy utilised the EMBASE, Web of Science, Cochrane Library and MEDLINE databases. Risk of bias assessment was performed with the Newcastle-Ottawa scale. Random effects meta-analysis calculated mean differences (MD) and odds ratios (OR), while subgroup analysis of different chronic pain conditions explored their relative association with the signs and symptoms of DED. Evidence certainty was evaluated using Grades of Recommendation, Assessment, Development, and Evaluation (GRADE).</p><p><strong>Results: </strong>Fourteen observational studies comprising 3,281,882 individuals were included. Meta-analysis found high quality evidence that individuals with chronic pain were more likely to experience symptoms of DED than controls (OR = 3.51 [95 %CI: 3.45,3.57]). These symptoms were more severe (MD = 18.53 [95 %CI: 11.90, 25.15]) than controls with a clinically meaningful effect size. Individuals with chronic pain had more rapid tear film disruption (MD = -2.45 [95 %CI: -4.20, -0.70]) and reduced tear production (MD = -5.57 [95 %CI: -9.56, -1.57]) compared with controls (with moderate evidence quality). High quality evidence revealed individuals with chronic pain had lower basal tear production (anaesthetised) than controls (MD = -2.59 [95 %CI: -3.60, -1.58]). Tear film osmolarity showed no significant differences between the chronic pain and pain-free groups. Group differences for DED signs were not considered clinically meaningful.</p><p><strong>Conclusion: </strong>More severe, clinically meaningful symptoms of DED were reported in individuals with chronic pain than controls, however group differences for the signs of DED were typically of limited or questionable clinical relevance. This ocular phenotype where DED is felt more than it is seen in chronic pain may reflect underlying sensory hypersensitivity, shared by both conditions and contributing to their frequent comorbidity. Advancing understanding of this potential pathophysiological mechanism may guide clinical management.</p>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141293876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contact lenses as a potential vehicle of Candida transmission 隐形眼镜是传播念珠菌的潜在媒介。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-05 DOI: 10.1016/j.clae.2024.102249
{"title":"Contact lenses as a potential vehicle of Candida transmission","authors":"","doi":"10.1016/j.clae.2024.102249","DOIUrl":"10.1016/j.clae.2024.102249","url":null,"abstract":"<div><h3>Purpose</h3><p>Contact lenses can be contaminated with various microorganisms, including pathogenic yeasts of the genus <em>Candida</em><span>, which are known for their ability to adhere to abiotic surfaces<span>, including plastic materials used for various medical purposes. Microbial contamination of the lenses can lead to infection of the wearer’s eyes. The purpose of this study was to simulate the contamination of contact lenses with </span></span><span><span>C. albicans</span></span> and <em>C. parapsilosis</em>, analyze the interaction of the microorganisms with the lens material, and optimize the protocol for PCR-based analysis of the microbial agents responsible for lens contamination.</p></div><div><h3>Methods</h3><p>Hilafilcon lenses were exposed to <span><em>C. albicans</em></span> and <em>C. parapsilosis</em><span><span><span> cultures, washed, and examined for their ability to further spread the contamination. Scanning electron microscopy was used to analyze the attachment of </span>yeast cells to the lenses. </span>Infrared spectroscopy was used to examine the potential changes in the lens material due to </span><em>Candida</em><span> contamination. The protocol for DNA isolation from contaminated lenses was established to enable PCR analysis of microbes attached to the lenses.</span></p></div><div><h3>Results</h3><p>Hilafilcon lenses contaminated with <em>Candida</em> were able to spread the contamination even after washing with saline or with a commercial cleaning solution. In the present experimental settings, the yeasts did not grow into the lenses but began to form biofilms on the surface. However, the ability of the lenses to retain water was altered. The PCR-based protocol could be used to help identify the type of contamination of contact lenses.</p></div><div><h3>Conclusion</h3><p>Once contaminated with <span><em>Candida albicans</em></span> or <span><span>Candida parapsilosis</span></span>, Hilafilcon contact lenses are difficult to clean. Yeasts began to form biofilms on lens surfaces.</p></div>","PeriodicalId":49087,"journal":{"name":"Contact Lens & Anterior Eye","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141263174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of autologous serum and platelet-rich plasma in the treatment of severe dry eye and persistent epithelial defects. 比较自体血清和富血小板血浆在治疗严重干眼症和持续性上皮缺损中的作用。
IF 3.2 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-06-03 DOI: 10.1016/j.clae.2024.102247
İbrahim Özlük, Bora Yüksel, Tuncay Küsbeci
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引用次数: 0
Bilateral axial length growth patterns of myopic anisometropes undergoing sequential monocular to binocular orthokeratology treatment 接受单眼到双眼正视镜连续治疗的近视散光患者的双侧轴长增长模式。
IF 4.1 3区 医学
Contact Lens & Anterior Eye Pub Date : 2024-05-28 DOI: 10.1016/j.clae.2024.102192
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