Acta Ophthalmologica最新文献

{"title":"Genetic diversity of Acanthamoeba and clinical outcome predictors in Danish patients with Acanthamoeba keratitis.","authors":"Sandra M Skovdal, Christen Rune Stensvold, Henrik Vedel Nielsen, Stine Elkjær Nielsen, Jesper Hjortdal, Anders Ivarsen","doi":"10.1111/aos.17527","DOIUrl":"https://doi.org/10.1111/aos.17527","url":null,"abstract":"<p><strong>Purpose: </strong>Acanthamoeba keratitis (AK) is a severe corneal infection with potential detrimental effects on visual outcome and quality of life, primarily affecting young contact lens wearers. We report Acanthamoeba genotypes, subtypes and clinical outcome from Danish patients with AK.</p><p><strong>Methods: </strong>Thirty-nine PCR-positive AK cases diagnosed and treated at Aarhus University Hospital, Denmark, from 2002 to 2022 were included. Corneal samples underwent next-generation sequencing (NGS) for Acanthamoeba genotyping. These data were compared with clinical data and results from PCR.</p><p><strong>Results: </strong>Acanthamoeba T4 was the most frequent genotype (n = 35), with four subtypes identified (T4A, T4B, T4D and T4G); three cases of the T3 genotype were observed. Three samples showed evidence of two distinct Acanthamoeba sequences. The median patient age was 35 years, genders were equally represented and the median time from symptom onset to diagnosis was 26 days. Ninety per cent had identifiable risk factors in addition to contact lens wear. Corticosteroid treatment prior to AK diagnosis, moderate-to-severe pain, male gender, older age, ring infiltration and infiltrate size >3 mm were associated with poor visual outcome. No significant correlation was found between Acanthamoeba genotype or subtype and clinical outcomes.</p><p><strong>Conclusion: </strong>We reveal the genetic diversity of Acanthamoeba involved in AK in Denmark. However, genotype or subtype did not predict clinical outcome. Further research is needed to clarify the role of specific genotypes and subtypes in disease progression and treatment response.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092540","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}

{"title":"Diet and myopic macular degeneration in the Aier-SERI high myopia adult cohort study.","authors":"Kai-Xiong Cheong, Meible Chi, Wei Pan, Yu-Qi Lee, Yijia Zhang, Ziqi Hu, Hla Myint Htoon, Quan V Hoang, Mary Foong-Fong Chong, Weizhong Lan, Seang-Mei Saw, Ecosse L Lamoureux","doi":"10.1111/aos.17528","DOIUrl":"https://doi.org/10.1111/aos.17528","url":null,"abstract":"<p><strong>Purpose: </strong>We investigated relationships between two dietary composite scores and myopic macular degeneration (MMD) in a high myopia adult cohort, as there is a knowledge gap regarding the role of diet in MMD.</p><p><strong>Methods: </strong>This is a cross-sectional analysis of a population-based prospective cohort, the Aier-Singapore Eye Research Institute (SERI) high myopia cohort study of Chinese adults, in Changsha, central China. Systemic and ocular (including cycloplegic spherical equivalent [SE] and axial length [AL]) assessments were carried out. A self-administered food frequency questionnaire was used to assess the dietary intake. Dietary intake was categorised into 13 food groups (refined grains, whole grains, meat, fish, processed/unhealthy meat, plant-based protein, fruits, vegetables, fast food and savoury snacks, dairy products, desserts and sweet snacks, sugar-sweetened beverages, and alcohol). Using exploratory factor analysis, two dietary patterns (Dietary Pattern 1 [less healthy] and 2 [healthier]) were identified. Multivariable logistic regression analyses with Bonferroni corrections were performed to assess associations between diet and MMD.</p><p><strong>Results: </strong>Of 445 participants, 71 (16.0%) had MMD. The participants had an overall mean age of 42.3 ± 7.3 years, SE of -9.5 ± 4.3 dioptres (D) and AL of 27.3 ± 11.86 mm. In the multivariable analyses, none of the 13 food groups (p > 0.004 for all) or 2 dietary patterns (p > 0.05 for both) were associated with MMD, after adjusting for age, sex, education, SE and AL.</p><p><strong>Conclusion: </strong>We did not find associations between diet and MMD in a cohort of highly myopic adults. There is currently no dietary advice to prevent MMD. Larger and prospective studies conducted over multiple time points are required.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092536","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}

{"title":"Outsourced eye care in the Finnish capital region: Switching from fee-for-service to bundled payment model.","authors":"Susanna Moisander, Jukka Ari Olavi Moilanen, Hans Henrik Konstantin Backström, Olga Marjasova, Marko Juhani Myöhänen, Taina Pauliina Nykänen, Mikko Juhani Pietilä, Paulus Torkki","doi":"10.1111/aos.17523","DOIUrl":"https://doi.org/10.1111/aos.17523","url":null,"abstract":"<p><strong>Purpose: </strong>The demand for specialised eye care has quadrupled over the last two decades, driven by an aging population and the advent of new treatments. This surge has led to increased outsourcing by the Helsinki and Uusimaa Hospital District (HUS) Eye Hospital, initially relying on a fee-for-service model. This model, however, has been marked by excessive bureaucracy and transaction costs. Between 2019 and 2021, HUS Eye Hospital embarked on a comparative analysis of outsourcing models to identify the most cost-effective, efficient and suitable approach.</p><p><strong>Methods: </strong>After the review of literature and stakeholder interviews, three different outsourcing models were assessed: fee-for-service, capitation and bundled payment. The models were evaluated against each other and HUS insourcing using SWOT analysis, custom-made evaluation matrices and cost analysis.</p><p><strong>Results: </strong>The evaluation identified bundled payments as the most promising model for HUS eye care outsourcing. Under this model, patients diagnosed with or suspected of having eye diseases are referred to external service providers for a predetermined period, encompassing follow-up and treatment, with providers receiving a fixed payment for each assigned patient.</p><p><strong>Conclusion: </strong>Determining the optimal outsourcing model for HUS Eye Hospital was a complex process and necessitated the development of a new quality control system. The selection of bundled payment as the preferred method required an adaptation of it to the national requirements and legislation. While bundled payments have been successfully implemented in other medical specialties, their application in ophthalmology is novel, with forthcoming data from HUS Eye Hospital expected to shed further light on its effectiveness.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092553","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}

{"title":"Jackknife and bootstrapping resampling techniques to evaluate the precision of lens formula constants.","authors":"Achim Langenbucher, Jascha Wendelstein, Alan Cayless, Thomas Olsen, Peter Hoffmann, Nóra Szentmáry","doi":"10.1111/aos.17522","DOIUrl":"https://doi.org/10.1111/aos.17522","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to develop a method for evaluating intraocular lens (IOL) formula constant uncertainties using two modern statistical techniques-jackknife and bootstrap resampling.</p><p><strong>Methods: </strong>Using two datasets (dataset 1: 888 eyes treated with the aberration correcting Hoya Vivinex IOL, dataset 2: 821 eyes with the spherical Alcon SA60AT/SN60AT IOL), formula constant uncertainties for the SRK/T (Aconst), Hoffer-Q (pACD), Holladay 1 (SF), simplified Haigis (a0) with preset a1/a2, Haigis (triplet a0/a1/a2), Castrop (triplet C/H/R) and Olsen formula (ACD) were evaluated. All input parameters were jackknife and bootstrap (N_B = 1000) resampled, and formula constants for each sample derived using nonlinear iterative optimisation techniques.</p><p><strong>Results: </strong>In single constant formulae where the constant acts directly on the effective lens position (Hoffer-Q, Holladay 1, simplified Haigis, Olsen), the formula constant in each case showed a standard deviation (SD) of about 0.01 with both jackknife and bootstrap sampling. The SRK/T Aconst showed a SD of about 0.018, and the Haigis and Castrop formulae with constant triplets showed large variations in the 3 constants (a0/a1/a2 about 0.036/0.005/0.002, C/H/R about 0.001/0.011/0.012). Direct formula reversion and solving for the formula constant yielded systematically larger SD values (Aconst/pACD,SF/a0/ACD = 0.586/0.395/0.403/0.324/0.304) with highly skewed distributions.</p><p><strong>Conclusion: </strong>The distributions of formula constants with relevant benchmarks such as SD or confidence intervals can be derived with jackknife and bootstrap resampling techniques, offering potential advantages over direct formula reversion which yields skewed distributions, making central metrics such as the formula constant distribution mean unsuitable for constant optimisation.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075313","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}

{"title":"Laser prophylaxis for retinal detachment in Stickler syndrome: A systematic review and meta-analysis.","authors":"David A Camp, Saaquib R Bakhsh, Ali Torkashvand, Nathan R Jensen, Ameay V Naravane, Peter J Belin, Polly A Quiram, Tsveta Ivanova, Thomas J Wubben, Cagri G Besirli, Brenda L Bohnsack, Michael J Shapiro, Michael P Blair, Amir R Hajrasouliha","doi":"10.1111/aos.17509","DOIUrl":"https://doi.org/10.1111/aos.17509","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the effectiveness of laser prophylaxis in preventing retinal detachment (RD) in patients with Stickler syndrome.</p><p><strong>Methods: </strong>A literature search was performed to identify studies that compared RD rates between eyes that received laser prophylaxis and eyes that received no laser prophylaxis in patients with Stickler syndrome. Data sets from the included studies were pooled and analysed. Individual eyes that presented with RD and eyes without RD with <6 months of follow-up were excluded. The primary outcome was the rate of RD. The study was conducted in accordance with the PRISMA guideline 2020 for systematic reviews.</p><p><strong>Results: </strong>There were 6 articles included in the meta-analysis, including 400 eyes of 225 patients. RD rate was 6.6% (19 of 289) in eyes with laser compared to 36.0% (40 of 111) in eyes with no laser (p < 0.00001, chi-square) with a mean follow-up interval of 6.3 years for eyes with laser and 4.0 years for eyes with no laser. The pooled risk ratio for retinal detachment after laser prophylaxis was 0.23 (95% CI: 0.13-0.41).</p><p><strong>Conclusion: </strong>Prophylactic laser therapy was associated with a significantly lower risk of RD in patients with Stickler syndrome compared to no laser prophylaxis.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075316","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}

{"title":"Fundus autofluorescence lifetimes in age-related macular degeneration versus healthy controls in a pseudophakic population.","authors":"Jana Oertel, Dominik Fischer, Melih Tarhan, Daniel Meller, Martin Hammer","doi":"10.1111/aos.17519","DOIUrl":"https://doi.org/10.1111/aos.17519","url":null,"abstract":"<p><strong>Purpose: </strong>To check whether prolonged fundus autofluorescence (FAF) lifetimes in age-related macular degeneration (AMD) could be an artefact resulting from lens fluorescence.</p><p><strong>Methods: </strong>Fluorescence lifetime imaging ophthalmoscopy (FLIO) was performed in pseudophakic intermediate AMD as well as healthy controls. The median values of FAF lifetimes in the centre, the inner and the outer ring of the ETDRS grid, obtained as amplitude-weighted mean of the lifetimes from a three-exponential fit of the fluorescence decay over time in two spectral channels, as well as peak emission wavelengths (PEW) were compared between patients and controls. The age dependence of FAF lifetime was checked per group. In the patient cohort, FAF lifetimes of individuals with and without subretinal drusenoid deposits (SDD) were compared.</p><p><strong>Results: </strong>Forty-four AMD patients (mean age 80.0 ± 6.0 years) and 26 controls (mean age 73.0 ± 10.2 years) were included. The FAF lifetimes of a subgroup of patients (N = 25, mean age 76.3 ± 5.6 years), age-matched to the controls, were significantly longer than those of the controls (all grid areas and spectral channels p < 0.001). FAF lifetimes increased with age in the controls (p = 0.006-0.03), but not in the patients. Patients with SDD had longer FAF lifetimes than those without (p = 0.003-0.068). PEW neither showed significant group differences nor age dependence.</p><p><strong>Conclusions: </strong>Although long fluorescence lifetimes of the lens can affect FAF lifetime measurements, prolonged FAF lifetimes in AMD are specific to the disease and not a lens artefact as shown in pseudophakic eyes. The effect of AMD on the lifetimes outweighs that of age. Patients with SDD, who have a higher risk of AMD progression, also show longer FAF lifetimes.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957553","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}

{"title":"Prevalence of central serous chorioretinopathy in Denmark.","authors":"Ida N Frederiksen, Danson V Muttuvelu, Rodrigo Anguita, Lasse J Cehofski, Nathalie S Eriksen, Carsten Faber, Mads K Falk, Lorenzo Ferro Desideri, Giuseppe Giannaccare, Jakob Grauslund, Michael Stormly Hansen, Josef Huemer, Morten B Larsen, Ligor P Kiruparajan, Chris B Søndergaard, Andrea Taloni, Tobias E Torp-Pedersen, Elon H C van Dijk, Marie L R Rasmussen, Yousif Subhi","doi":"10.1111/aos.17520","DOIUrl":"https://doi.org/10.1111/aos.17520","url":null,"abstract":"<p><strong>Purpose: </strong>Central serous chorioretinopathy (CSC) is a prevalent maculopathy, but epidemiological studies are few. In this study, we determined the prevalence of CSC for the first time in a Scandinavian population.</p><p><strong>Methods: </strong>This cross-sectional study was based on nationwide opportunistic retinal examination from 79 high street chain optician stores in Denmark. Retinal imaging was made using non-mydriatic colour fundus photography. Any abnormal result in the optometrist-facilitated retinal examination was referred to tele-ophthalmologic evaluation, which was performed by experienced consultant ophthalmologists who diagnosed CSC.</p><p><strong>Results: </strong>During the 4-year study period, a total of 968 610 unique individuals underwent retinal examination, which corresponded to 16.3% of the entire population of Denmark. Of these, 113 individuals were diagnosed with CSC, which corresponded to a prevalence of 14 per 100 000. Individuals with CSC presented at a mean age of 48.2 ± 12.3 years; however, CSC was present in a large age range as both teenagers and the elderly with CSC were identified. Male biological sex was a statistically significant risk factor (odds ratio: 2.33; 95% confidence interval: 1.64-3.33, p < 0.0001). By extrapolating prevalence numbers to population statistics, we estimate that 219 females and 511 males had CSC in Denmark in December 2022.</p><p><strong>Conclusion: </strong>We identified a prevalence of 14 per 100 000, confirmed male biological sex as a significant risk factor for CSC, and found that the disease most commonly occurs among individuals aged 30-60 years. Further studies with multimodal imaging including optical coherence tomography are warranted for better accuracy.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951864","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}

{"title":"Influence of posterior staphyloma morphology on macular hole closure patterns in highly myopic eyes.","authors":"Matteo Mario Carlà, Laura De Luca, Giorgia Campaniello, Francesco Mottola, Mattia Cusato, Gianmarco Oreste, Emanuele Crincoli, Fiammetta Catania, Gloria Gambini, Tomaso Caporossi, Elise Philippakis, Aude Couturier, Stanislao Rizzo, Carlos Mateo","doi":"10.1111/aos.17521","DOIUrl":"https://doi.org/10.1111/aos.17521","url":null,"abstract":"<p><strong>Purpose: </strong>To examine how posterior staphyloma morphology affects macular hole closure patterns in highly myopic eyes.</p><p><strong>Methods: </strong>Retrospective study analysing 188 highly myopic macular holes (MMH) with axial length ≥ 26.5 mm that underwent surgery with either internal limiting membrane (ILM) peeling or inverted flap technique over a 10-year period. Posterior staphylomas were classified as: none, wide macular, narrow macular or peripapillary. Closure patterns were categorized according to Rossi's classification (0A-C, 1A-C, 2A-D). Statistical analysis examined associations between staphyloma types and closure patterns.</p><p><strong>Results: </strong>ILM peeling and inverted flap showed similar overall anatomical success rates (97.4% vs. 97.3%). Type 1 closure predominated with ILM peeling (97.4% vs. 57.3%), while Type 2 closure was exclusive of ILM inverted flap (40.0%). Staphyloma morphology significantly influenced closure patterns in the ILM inverted flap group. Eyes with wide macular staphyloma had lower odds of Type 2 closure (OR = 0.19, 95% CI: 0.06-0.53, p = 0.002), while the peripapillary one was associated with higher risk (OR = 2.58, 95% CI: 1.13-5.92, p = 0.029). In multivariate analysis, narrow and peripapillary staphylomas remained independent predictors of Type 2 closure. Specific closure subtypes showed distinct associations with staphyloma types: narrow macular with Type 2A closure and peripapillary with Type 2A and 2C closure. Larger MMH (≥400 μm) in eyes with peripapillary staphyloma had the highest rate of Type 2 closure (80.0%).</p><p><strong>Conclusion: </strong>Posterior staphyloma morphology significantly influences MMH closure patterns in highly myopic eyes, especially with the ILM inverted flap technique. The posterior segment geometry likely affects gas-retina contact during recovery, resulting in different closure patterns.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957667","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}

{"title":"Individuals with severe visual field loss from stroke and glaucoma could have on-road driving safety comparable to normally sighted drivers.","authors":"Tomas Bro, Jan Andersson","doi":"10.1111/aos.17512","DOIUrl":"https://doi.org/10.1111/aos.17512","url":null,"abstract":"<p><strong>Background: </strong>Vision is a critical component of safe driving, yet establishing effective legal vision requirements for driver licensing remains challenging. Current EU regulations mandate minimum standards for visual acuity and visual fields, but also allow exemptions based on practical driving tests. This study investigates the on-road driving performance of individuals with visual field loss (VFL) who regained their licences after passing a simulator-based assessment, compared to age-matched and younger, normally sighted controls.</p><p><strong>Method: </strong>The study included 72 individuals with VFL who had successfully completed a simulator test and regained their driver's licences. Each participant was matched with an age- and gender-matched normally sighted control and a younger normally sighted control (in total 212 participants). All participants underwent a standardized on-road driving test administered by certified examiners blinded to group allocation. The test evaluated vehicle knowledge, eco-driving, adherence to traffic rules and traffic safety/behaviour using the Swedish national driving test protocol. Logistic regression analysis was performed to assess factors influencing pass rates.</p><p><strong>Results: </strong>Participants with VFL achieved a pass rate of 68%, comparable to the age-matched controls (66%) but lower than the younger controls (81%). No significant differences were observed in the proportions of passed tests, test elements, driving habits or interventions across groups. Within the VFL group, neither diagnosis type (e.g., glaucoma, stroke) nor the extent of visual field loss predicted test outcomes. While older groups (VFL and age-matched controls) received more remarks regarding observational competence compared to younger controls, no differences emerged in risk identification or other competence areas.</p><p><strong>Conclusions: </strong>This study suggests that individuals with VFL can drive as safely as age-matched, normally sighted controls. Simulator and on-road tests are critical tools for individualized assessment, challenging the sole reliance on perimetry for licensing decisions. These findings support the inclusion of practical on-road driving tests as a regulatory option for individuals with VFL, promoting mobility while maintaining road safety.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957554","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}

{"title":"Effect of anticholinergic eye drops on intraorbital, periorbital and brain pulsation power.","authors":"Seyed Mohsen Ebrahimi, Niko Huotari, Ville Saarela, Marja Honkamo, Lauri Raitamaa, Vesa Korhonen, Johanna Tuunanen, Janne Kananen, Vesa Kiviniemi","doi":"10.1111/aos.17510","DOIUrl":"https://doi.org/10.1111/aos.17510","url":null,"abstract":"<p><strong>Purpose: </strong>The study aims to investigate the effect of pharmacologically reducing parasympathetic activity on ocular and cerebral pulsations, inspired by recent discoveries of a glymphatic-like system in the eye driven by physiological pulsations.</p><p><strong>Methods: </strong>Forty-six healthy volunteers were subjected to fMREye imaging, with 23 receiving topical tropicamide and 23 serving as controls. Additionally, 83 healthy volunteers were scanned using 3D whole-brain magnetic resonance encephalography (MREG). Ocular pulsation power across very low-frequency, respiratory and cardiac bands was quantified in each individual.</p><p><strong>Results: </strong>Topical tropicamide significantly reduced physiological pulsation power throughout the eye, including the cornea, lens, vitreous body, retina and optic nerve. Similar reductions were observed in the untreated eye, indicating potential systemic effects. In the brain, significant pulsation changes were noted in the venous sinus and internal carotid artery following tropicamide application.</p><p><strong>Conclusion: </strong>The findings suggest parasympathetic activity is crucial in modulating physiological pulsations in both ocular and cerebral glymphatic pathways. This interplay may have implications for conditions involving impaired fluid dynamics, such as glaucoma and traumatic brain injury.</p>","PeriodicalId":6915,"journal":{"name":"Acta Ophthalmologica","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957564","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}