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Possibilities of Using Corneal Stromal Lenticules Obtained During ReLEx SMILE Refractive Surgery for Transplantation Purposes. A Review.
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2025/7
Yun Min Klimešová, Magdalena Netuková, Alina-Dana Baxant, Martina Poláchová, Pavel Studený

A corneal stromal lenticule (CSL) is a part of the corneal stroma that forms as a waste product during the refractive surgery ReLEx SMILE (Small Incision Lenticule Extraction) and is no longer used. With the increasing number of ReLEx SMILE procedures and the number of potentially available CSLs, two main aspects of their usage are currently being investigated. The first aspect includes the biological properties of CSLs and their proper preservation with respect to long-term storage. The second aspect is related to the potential clinical use of CSLs. As a high-quality biomaterial, CSLs have substantial potential to be used for alternative solutions in the treatment of specific eye diseases. In a number of studies it has been shown that RSL transplantation could be a safe and effective method that does not cause any serious complications, for example in terms of immune reaction. The aim of this article is to present an overview of the possibilities for using CSLs for transplantation purposes, and at the same time to discuss our methodology for processing and preserving CSLs with the protocol used at the Eye Tissue Bank of the Královské Vinohrady University Hospital.

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引用次数: 0
Intravitreal Dexamethasone Implant in the Treatment of Diabetic Macular Edema Focusing on the Role of OCT Biomarkers 玻璃体内地塞米松植入剂治疗糖尿病性黄斑水肿 聚焦。
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2024/29
Tomáš Mudroch, Michal Hrevuš, Marta Karhanová, Jiří Řehák, Klára Marešová

Objective: The aim of this study was to evaluate the outcomes of Ozurdex® (DEX) implant in patients with diabetic macular edema (DME) in real-world clinical practice, and to determine the correlation between known OCT biomarkers and the effect of treatment.

Material and methods: This retrospective study included 42 eyes of 33 patients (16 women, 17 men) treated with DEX at the Department of Ophthalmology, Faculty of Medicine and Dentistry of Palacký University and University Hospital Olomouc for DME indication between 2020 and 2023. Follow-up examinations were conducted at 1, 3, and 6 months after the first DEX application. The main assessed parameters were: best-corrected visual acuity (BCVA), intraocular pressure (IOP), central retinal thickness (CRT), OCT biomarkers. The results were subsequently statistically evaluated.

Results: At the first follow-up after DEX application, there was an average decrease in CRT of 186 ±146µm and a gain of 3 ±7 letters. Positive morphological and functional responses were observed in 39 eyes (92.9%) and 23 eyes (54.8%) respectively. The disorganization of retinal inner layers (DRIL) biomarker was initially present in 41 eyes (97.6%), with reduction or disappearance observed in 13 eyes (31%) post-application. Eyes with ellipsoid zone disruption (EZ disruption) had an average initial BCVA of 49.6 letters, compared to 57.8 letters in the group without this biomarker. The mean gain in BCVA was +8.7 letters in treatment-naive eyes and +2.1 letters in previously treated eyes. Chronic DME was less frequent in treatment-naive (n = 1, 14.3%) compared to previously treated eyes (n = 28, 84.8%). All these results were statistically significant (p < 0.05). An increase in IOP post-DEX application occurred in 9 patients (21.4%).

Conclusion: Our results confirm DEX as a safe and effective treatment option for DME. Treatment-naive patients achieved better functional outcomes. We confirmed ellipsoid zone disruption (EZ disruption) as a negative biomarker. Additionally, we demonstrated the capacity of DEX to reduce disorganization of the retinal inner layers (DRIL).

研究目的本研究旨在评估Ozurdex®(DEX)植入治疗糖尿病黄斑水肿(DME)患者在实际临床实践中的疗效,并确定已知OCT生物标志物与治疗效果之间的相关性:这项回顾性研究纳入了 2020 年至 2023 年期间在帕拉茨基大学医学和牙科学院眼科部以及奥洛穆茨大学医院接受 DEX 治疗的 33 名患者(16 名女性,17 名男性)的 42 只眼睛。在首次使用 DEX 后的 1、3 和 6 个月进行了随访检查。主要评估参数包括:最佳矫正视力(BCVA)、眼压(IOP)、视网膜中央厚度(CRT)、OCT 生物标志物。随后对结果进行了统计评估:在应用 DEX 后的首次随访中,视网膜中央厚度(CRT)平均下降了 186 ± 146 微米,视力增加了 3 ± 7 个字母。39只眼睛(92.9%)和23只眼睛(54.8%)分别出现了积极的形态和功能反应。41只眼睛(97.6%)最初出现视网膜内层紊乱(DRIL)生物标记,13只眼睛(31%)在应用后出现减少或消失。有椭圆形区破坏(EZ 破坏)的眼睛初始 BCVA 平均为 49.6 个字母,而没有这种生物标记物的组为 57.8 个字母。未接受过治疗的眼睛的 BCVA 平均增益为 +8.7 个字母,曾接受过治疗的眼睛的 BCVA 平均增益为 +2.1 个字母。与先前接受过治疗的眼睛(28 只,84.8%)相比,未接受过治疗的眼睛(1 只,14.3%)中慢性 DME 的发生率较低。所有这些结果均具有统计学意义(P < 0.05)。9名患者(21.4%)在使用DEX后眼压升高:结论:我们的研究结果证实,DEX是一种安全有效的治疗DME的方法。结论:我们的研究结果证实,DEX 是治疗 DME 的安全有效的方法。我们证实椭圆形区破坏(EZ 破坏)是一种阴性生物标志物。此外,我们还证明了 DEX 能够减少视网膜内层(DRIL)的紊乱。
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引用次数: 0
Evaluating the Influence of Eye Rubbing and Genetic Predisposition on Keratoconus in Bucaramanga (Colombia): A Case-control Study.
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2025/2
Laura María Duarte-Bueno, Alejandro Tello, Luis Alfonso Diaz-Martínez, Sergio Escobar, Virgilio Galvis

Aim: To determine risk factors associated with keratoconus in Bucaramanga, Colombia.

Material and methods: A paired case-control study was conducted at Bucaramanga, Colombia, between November 2022 and December 2023. The controls were age- and sex-matched. Patients answered a questionnaire designed for this study regarding their family history of keratoconus, eye rubbing, atopy, sun exposure, and sleeping habits. Information from medical records was also obtained. Univariate and multivariate conditional analyses were used to test the significance of associations.

Results: One hundred fifty-six patients with a diagnosis of keratoconus and 312 controls were included. Univariate analyses revealed significant differences between cases and controls in the following factors: very frequent eye rubbing (OR = 20.9, 95% CI 6.2-70.1), a positive family history of keratoconus (OR = 13.0, 95% CI 5.5-30.8), a personal history of atopy (OR = 2.2), and nocturnal eye compression (OR = 1.7, 95% CI 1.0-2.7). Multivariate analysis showed a statistical significance for eye rubbing (OR = 6.9, 95% CI 3.8-12.5), and family history of keratoconus (OR = 10.3, 95% CI 2.3-44.9). There was a significant mild interaction between both, since when the two coincided the OR increased up to 74.1 times.

Conclusion: Eye rubbing and family history of keratoconus were the most important risk factors for keratoconus in our population. Although it is impossible to establish causal relationships, our results suggest that controlling eye rubbing could be a potentially useful preventive measure, particularly in individuals with a family history of keratoconus. Other factors, such as sun exposure, sleeping position, and atopy, may play a role in the pathophysiology of the disease.

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引用次数: 0
Internal Limiting Membrane Dehiscence and Rouleaux Formation in a Case with Branch Retinal Vein Occlusion and Macular Edema Treated with a Single Dexamethasone Implant Administration. A Case Report. 单次地塞米松植入治疗视网膜分支静脉闭塞和黄斑水肿病例中的内限膜开裂和胭脂虫形成。病例报告。
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2025/5
Seher Köksaldı, Nargiz Ahmadova, Remzi Avcı, Osman Ali Saatci

A 70-year-old woman was examined with a 10-day history of photopsia and floaters in her left eye. Her best-corrected visual acuity was 20/25 in both eyes, with a normal intraocular pressure and some nuclear sclerosis. Spectral-domain optical coherence tomography revealed a separated posterior vitreous, with a rolled internal limiting membrane flap and inner retinal dimples in the left eye. Optical coherence tomography angiography demonstrated reduced vessel density in both the superficial and deep capillary plexuses of the left fundus. Sixteen months earlier, she had received a single intravitreal Dexamethasone implant injection, due to inferotemporal branch retinal vein occlusion-related macular edema. A diagnosis of internal limiting membrane tear following an uneventful posterior vitreous detachment was reached and no treatment was recommended.

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引用次数: 0
Surgical Treatment of Rhegmatogenous Retinal Detachment in the Only Seeing Eye. 单眼孔源性视网膜脱离的手术治疗。
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2024/38
Oldřich Chrapek, Veronika Matušková, Daniela Vysloužilová, Jan Souček, Kristína Sičová, Michal Březík

Aim: To retrospectively evaluate the anatomical and functional success of surgical treatment of rhegmatogenous retinal detachment (RRD) in the only remaining seeing eye.

Material and methods: The study included 28 eyes of 28 patients, 19 (68%) of whom were men, with an average age of 46 years. They were operated on by a single surgeon for RRD at the Eye Clinic of the University Hospital and Faculty of Medicine, Masaryk University in Brno, from July 1, 2019, to April 30, 2023, using cryosurgical techniques and/or 25G+ pars plana vitrectomy (PPV). In 11 patients, 25G+ PPV was performed with the application of a pre-equatorial cerclage. The Blunt ocular trauma and uncomplicated cataract surgery with implantation of a posterior chamber intraocular lens were admissible within the patient histories. The cause of RRD was retinal tear(s) regardless of their number and location. The transparency of the anterior segment of the eye enabled reliable visualization of the posterior segment. Preoperative proliferative vitreoretinopathy (PVR) grades A-D2 were acceptable. Patients with a history of penetrating eye injury were excluded. Patients were evaluated 1-3 months after the performance of PPV. The surgery was considered anatomically successful if the retina was completely reattached. Each patient's final visual acuity (VA) was assessed using a Snellen chart. Numerical results were expressed as arithmetic means and percentages. Since the different groups were not compared, no statistical tests were needed.

Results: Retinal reattachment was achieved in 27 patients (97%), while 1 patient (3%) experienced retinal detachment, resulting in anatomical failure of the treatment. 9 patients (32%) achieved VA ≥ 4/8.

Conclusion: We consider cryosurgical techniques using episclerally fixed cerclage bands and buckles, 25G+ PPV, and possibly a combination thereof, to be suitable methods for treating RRD in the only remaining seeing eye.

目的:回顾性评价手术治疗唯一能看见眼孔源性视网膜脱离(RRD)在解剖学和功能上的成功。材料与方法:28例患者28只眼,其中19例(68%)为男性,平均年龄46岁。2019年7月1日至2023年4月30日,他们在布尔诺马萨里克大学医院和医学院眼科诊所由一名外科医生进行RRD手术,使用冷冻技术和/或25G+玻璃体切割(PPV)。在11例患者中,25G+ PPV应用赤道前环扎术。钝性眼外伤和无并发症的白内障手术合并后房型人工晶状体植入术在患者病史中是可以接受的。RRD的原因是视网膜撕裂,不论其数量和位置。眼前段的透明使眼后段的可见性可靠。术前增生性玻璃体视网膜病变(PVR)分级A-D2均可接受。排除有穿透性眼外伤史的患者。在PPV实施后1-3个月对患者进行评估。如果视网膜完全重新附着,手术在解剖学上是成功的。每位患者的最终视力(VA)使用Snellen表进行评估。数值结果用算术平均值和百分比表示。由于没有对不同组进行比较,因此不需要进行统计检验。结果:27例(97%)患者视网膜重新附着,1例(3%)患者视网膜脱离,导致解剖治疗失败。9例(32%)患者VA≥4/8。结论:我们认为冷冻技术应用于锁骨外固定环带和带扣,25G+ PPV,以及可能的组合,是治疗RRD的合适方法。
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引用次数: 0
Long-Term Refractive and Topographical Changes in Keratoconic Eyes after Accelerated Corneal Crosslinking. 角膜加速交联后角膜锥形眼的长期屈光和地形变化。
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2024/37
Karolína Benca Kapitánová, Michal Javorka, Rastislav Vida, Monika Ťažandláková, Miroslava Budinská, Michal Kralik, Peter Žiak, Juraj Halička

Aim: To evaluate the long-term impact of accelerated corneal cross-linking (A-CXL) on selected refractive and topographical parameters in eyes with progressive keratoconus.

Methods: 77 eyes with keratoconus in 54 patients treated with A-CXL (10 min "epi-off" protocol) were included in the analysis. Preoperative and postoperative (1, 3 and 5 years after A-CXL) values of the studied parameters were compared.

Results: In the cohort, there was an improvement in best corrected central visual acuity (BCCVA) 1 year (p = 0.004) and 3 years (p.

目的:评价加速角膜交联(A-CXL)对进行性圆锥角膜屈光和地形参数的长期影响。方法:对54例经A-CXL治疗的77只圆锥角膜患者(10 min epi-off方案)进行分析。比较术前、术后(A-CXL术后1、3、5年)各参数值。结果:在队列中,最佳中央矫正视力(BCCVA)改善1年(p = 0.004)和3年(p = 0.004)。
{"title":"Long-Term Refractive and Topographical Changes in Keratoconic Eyes after Accelerated Corneal Crosslinking.","authors":"Karolína Benca Kapitánová, Michal Javorka, Rastislav Vida, Monika Ťažandláková, Miroslava Budinská, Michal Kralik, Peter Žiak, Juraj Halička","doi":"10.31348/2024/37","DOIUrl":"10.31348/2024/37","url":null,"abstract":"<p><strong>Aim: </strong>To evaluate the long-term impact of accelerated corneal cross-linking (A-CXL) on selected refractive and topographical parameters in eyes with progressive keratoconus.</p><p><strong>Methods: </strong>77 eyes with keratoconus in 54 patients treated with A-CXL (10 min \"epi-off\" protocol) were included in the analysis. Preoperative and postoperative (1, 3 and 5 years after A-CXL) values of the studied parameters were compared.</p><p><strong>Results: </strong>In the cohort, there was an improvement in best corrected central visual acuity (BCCVA) 1 year (p = 0.004) and 3 years (p.</p>","PeriodicalId":39839,"journal":{"name":"Ceska a Slovenska Oftalmologie","volume":"80 Ahead of print","pages":"8-13"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Easy Method of Pterygium Excision using Autologous Blood for Conjunctiva Autograft Fixation.
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2025/1
Radotma Andrea Silitonga, Hasianna Hanna Tabita Silitonga

Aims:  This study was planned to explore the efficacy of autologous blood as a stabilizing agent for graft surgery in pterygium.

Material and methods:  For this observational, non-comparative, interventional study, the hospital data of patients who underwent pterygium surgery with autografting using autologous blood between October 2021 to March 2022 were retrospectively analyzed. The graft stability post-surgery and recurrence was studied. There were 37 eyes of 37 patients undergoing pterygium surgery with autograft using autologous serum. The mean age was 53.5 ±10.10 years.

Results:  Pterygium included were nasal sided primary grade 3 pterygium, double-head pterygium and recurrent pterygium. Postoperatively, there were 4 cases of graft loss (10.8%). The mean time of follow up was 1.8 ±1.4 months (range 1 to 5 months). There was no recurrence seen in patients with graft intact.

Conclusion:  Autologous blood is a good and cost-effective stabilizing agent for graft surgery in pterygium.

{"title":"Easy Method of Pterygium Excision using Autologous Blood for Conjunctiva Autograft Fixation.","authors":"Radotma Andrea Silitonga, Hasianna Hanna Tabita Silitonga","doi":"10.31348/2025/1","DOIUrl":"https://doi.org/10.31348/2025/1","url":null,"abstract":"<p><strong>Aims: </strong> This study was planned to explore the efficacy of autologous blood as a stabilizing agent for graft surgery in pterygium.</p><p><strong>Material and methods: </strong> For this observational, non-comparative, interventional study, the hospital data of patients who underwent pterygium surgery with autografting using autologous blood between October 2021 to March 2022 were retrospectively analyzed. The graft stability post-surgery and recurrence was studied. There were 37 eyes of 37 patients undergoing pterygium surgery with autograft using autologous serum. The mean age was 53.5 ±10.10 years.</p><p><strong>Results: </strong> Pterygium included were nasal sided primary grade 3 pterygium, double-head pterygium and recurrent pterygium. Postoperatively, there were 4 cases of graft loss (10.8%). The mean time of follow up was 1.8 ±1.4 months (range 1 to 5 months). There was no recurrence seen in patients with graft intact.</p><p><strong>Conclusion: </strong> Autologous blood is a good and cost-effective stabilizing agent for graft surgery in pterygium.</p>","PeriodicalId":39839,"journal":{"name":"Ceska a Slovenska Oftalmologie","volume":"81 Ahead of Print","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143075961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Choroidal Thickness and Central Macular Thickness Measurements with Cirrus HD-OCT in Healthy Individuals in the Turkish Population 用 Cirrus HD-OCT 测量健康人的脉络膜厚度和黄斑中心厚度
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2024/24
Tuba Kara Akyüz, Fatma Betül Gürağaç, Yüksel Totan

Aim: This research was conducted to determine the normal values of choroidal thickness in healthy individuals and to evaluate the relationship between this thickness and age, gender, refraction, axial length and average macular thickness using OCT.

Material and method: In the study, the right eyes of 400 healthy individuals (234 women, 166 men) between the ages of 4 and 70 years, who applied to the Department of Ophthalmology outpatient clinic for examination, were evaluated.

Results: Macular thickness, macular volume, and foveal thickness were found to be 249.12 ±21.32 µm, 9.98 ±0.5 µm3 and 280 ±13.45 µm, respectively. According to linear regression analysis, a negative correlation was detected between age and subfoveal choroidal thickness (p < 0.05). It was determined that foveal thickness, retinal volume and average retinal thickness were higher in men, and foveal thickness increased with age (p < 0.05).

Conclusion: As a result of the research, it was determined that age is an important factor affecting choroidal thickness. It is thought that, in future, improving in vivo imaging of the choroid and measuring choroidal thickness using OCT will facilitate understanding of the pathophysiological basis of many ophthalmological diseases.

目的:本研究旨在确定健康人脉络膜厚度的正常值,并使用 OCT 评估脉络膜厚度与年龄、性别、屈光度、轴向长度和黄斑平均厚度之间的关系:这项研究评估了 400 名到眼科门诊接受检查的 4 至 70 岁健康人(234 名女性,166 名男性)的右眼:黄斑厚度、黄斑体积和眼窝厚度分别为 249.12 ±21.32 µm、9.98 ±0.5 µm3 和 280 ±13.45 µm。根据线性回归分析,年龄与眼底脉络膜厚度呈负相关(p < 0.05)。研究结果表明,男性的眼窝厚度、视网膜体积和平均视网膜厚度较高,且眼窝厚度随年龄增长而增加(p < 0.05):研究结果表明,年龄是影响脉络膜厚度的一个重要因素。研究结果表明,年龄是影响脉络膜厚度的重要因素。今后,改进脉络膜的活体成像和使用 OCT 测量脉络膜厚度将有助于了解许多眼科疾病的病理生理基础。
{"title":"Choroidal Thickness and Central Macular Thickness Measurements with Cirrus HD-OCT in Healthy Individuals in the Turkish Population","authors":"Tuba Kara Akyüz, Fatma Betül Gürağaç, Yüksel Totan","doi":"10.31348/2024/24","DOIUrl":"10.31348/2024/24","url":null,"abstract":"<p><strong>Aim: </strong>This research was conducted to determine the normal values of choroidal thickness in healthy individuals and to evaluate the relationship between this thickness and age, gender, refraction, axial length and average macular thickness using OCT.</p><p><strong>Material and method: </strong>In the study, the right eyes of 400 healthy individuals (234 women, 166 men) between the ages of 4 and 70 years, who applied to the Department of Ophthalmology outpatient clinic for examination, were evaluated.</p><p><strong>Results: </strong>Macular thickness, macular volume, and foveal thickness were found to be 249.12 ±21.32 µm, 9.98 ±0.5 µm3 and 280 ±13.45 µm, respectively. According to linear regression analysis, a negative correlation was detected between age and subfoveal choroidal thickness (p &lt; 0.05). It was determined that foveal thickness, retinal volume and average retinal thickness were higher in men, and foveal thickness increased with age (p &lt; 0.05).</p><p><strong>Conclusion: </strong>As a result of the research, it was determined that age is an important factor affecting choroidal thickness. It is thought that, in future, improving in vivo imaging of the choroid and measuring choroidal thickness using OCT will facilitate understanding of the pathophysiological basis of many ophthalmological diseases.</p>","PeriodicalId":39839,"journal":{"name":"Ceska a Slovenska Oftalmologie","volume":"80 Ahead of print","pages":"32-36"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141459865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sleeping Behavior and Keratoconus: A Scoping Review.
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2025/6
Alejandro Tello, Paula Alejandra Navarro, Angelica Pedraza-Concha, Sylvia J Villamizar, Virgilio Galvis

Aims: This scoping review was conducted to investigate whether nocturnal eye compression from inappropriate sleeping postures may contribute to the development or asymmetry of keratoconus (KC), by examining the association between sleeping positions and KC.

Material and methods: A systematic search of CENTRAL, MEDLINE, EMBASE, LILACS, ClinicalTrials.gov, gray literature, and selected journals from inception to January 18, 2023, was undertaken.

Results: Ten studies involving 2 322 participants met inclusion criteria. These studies were categorized into analytical and non-analytical designs to evaluate the relationship between prone, lateral, or supine sleeping positions and KC presence or asymmetry. Among the included studies, 50% were non-analytical, all indicating a correlation between KC parameters and nocturnal eye compression. In contrast, a statistically significant association between sleeping positions and KC risk was reported in 3 out of 5 analytical studies (60%).

Conclusion: Findings suggest a possible link between prone or lateral sleeping positions and KC development or asymmetry, implying that these positions may increase corneal biomechanical stress during sleep. However, the association was confirmed in only 60% of analytical studies. The review highlights the necessity for additional research to validate these findings and to explore potential causal mechanisms between sleeping positions and KC.

{"title":"Sleeping Behavior and Keratoconus: A Scoping Review.","authors":"Alejandro Tello, Paula Alejandra Navarro, Angelica Pedraza-Concha, Sylvia J Villamizar, Virgilio Galvis","doi":"10.31348/2025/6","DOIUrl":"10.31348/2025/6","url":null,"abstract":"<p><strong>Aims: </strong>This scoping review was conducted to investigate whether nocturnal eye compression from inappropriate sleeping postures may contribute to the development or asymmetry of keratoconus (KC), by examining the association between sleeping positions and KC.</p><p><strong>Material and methods: </strong>A systematic search of CENTRAL, MEDLINE, EMBASE, LILACS, ClinicalTrials.gov, gray literature, and selected journals from inception to January 18, 2023, was undertaken.</p><p><strong>Results: </strong>Ten studies involving 2 322 participants met inclusion criteria. These studies were categorized into analytical and non-analytical designs to evaluate the relationship between prone, lateral, or supine sleeping positions and KC presence or asymmetry. Among the included studies, 50% were non-analytical, all indicating a correlation between KC parameters and nocturnal eye compression. In contrast, a statistically significant association between sleeping positions and KC risk was reported in 3 out of 5 analytical studies (60%).</p><p><strong>Conclusion: </strong>Findings suggest a possible link between prone or lateral sleeping positions and KC development or asymmetry, implying that these positions may increase corneal biomechanical stress during sleep. However, the association was confirmed in only 60% of analytical studies. The review highlights the necessity for additional research to validate these findings and to explore potential causal mechanisms between sleeping positions and KC.</p>","PeriodicalId":39839,"journal":{"name":"Ceska a Slovenska Oftalmologie","volume":"81 Ahead of Print","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143075968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modern Biomarkers for Early Diagnosis of Ocular Surface Disease in Type 1 Diabetes. A Pilot Study.
Q4 Medicine Pub Date : 2025-01-01 DOI: 10.31348/2025/3
Josef Štorm, Marie Česká Burdová, Jiří Uhlík, Marcela Minaříková, Tereza Vrabcová Lainová, Martin Hložánek, Gabriela Mahelková

Patients with dry eye syndrome form a significant proportion of those treated in everyday ophthalmology practice. Diabetes mellitus is a major risk factor for the development of dry eye syndrome. Changes in tear film homeostasis, chronic inflammation and subsequent corneal nerve fiber pathology play a key role in its progression. The aim of this study was to describe the status of modern biomarkers of ocular surface damage in patients with type 1 diabetes and asses their utility in early diagnosis of dry eye syndrome.

Material and methods:  In total the pilot study included 19 patients with type 1 diabetes (T1D) and 15 patients in the control group. All patients underwent a detailed ocular surface examination, sample collection for matrix metalloproteinase-9 (MMP-9) laboratory analysis and epithelial HLA-DR expression evaluation, and in-vivo corneal confocal microscopy.

Results:  T1D patients showed statistically significantly reduced corneal nerve fiber length (p = 0.0482). The differences between the groups in terms of osmolarity, corneal sensitivity, Oxford score, tear break-up time and MMP-9 level were not statistically significant (p = 0.8272, p = 0.6029, p = 0.3507, p = 0.7561 and p = 0.0826 respectively). HLA-DR expression was examined in 10 T1D patients and 8 patients in the control group. Both groups showed minimal or no expression (p > 0.9999).

Conclusion:  The previously published literature supports our finding of corneal nerve fiber length reduction in T1D patients compared to controls. However, we did not find any significant changes in standard or modern ocular surface markers (MMP-9 levels, HLA-DR expression) measured in patients with dry eye syndrome.

{"title":"Modern Biomarkers for Early Diagnosis of Ocular Surface Disease in Type 1 Diabetes. A Pilot Study.","authors":"Josef Štorm, Marie Česká Burdová, Jiří Uhlík, Marcela Minaříková, Tereza Vrabcová Lainová, Martin Hložánek, Gabriela Mahelková","doi":"10.31348/2025/3","DOIUrl":"https://doi.org/10.31348/2025/3","url":null,"abstract":"<p><p>Patients with dry eye syndrome form a significant proportion of those treated in everyday ophthalmology practice. Diabetes mellitus is a major risk factor for the development of dry eye syndrome. Changes in tear film homeostasis, chronic inflammation and subsequent corneal nerve fiber pathology play a key role in its progression. The aim of this study was to describe the status of modern biomarkers of ocular surface damage in patients with type 1 diabetes and asses their utility in early diagnosis of dry eye syndrome.</p><p><strong>Material and methods: </strong> In total the pilot study included 19 patients with type 1 diabetes (T1D) and 15 patients in the control group. All patients underwent a detailed ocular surface examination, sample collection for matrix metalloproteinase-9 (MMP-9) laboratory analysis and epithelial HLA-DR expression evaluation, and in-vivo corneal confocal microscopy.</p><p><strong>Results: </strong> T1D patients showed statistically significantly reduced corneal nerve fiber length (p = 0.0482). The differences between the groups in terms of osmolarity, corneal sensitivity, Oxford score, tear break-up time and MMP-9 level were not statistically significant (p = 0.8272, p = 0.6029, p = 0.3507, p = 0.7561 and p = 0.0826 respectively). HLA-DR expression was examined in 10 T1D patients and 8 patients in the control group. Both groups showed minimal or no expression (p &gt; 0.9999).</p><p><strong>Conclusion: </strong> The previously published literature supports our finding of corneal nerve fiber length reduction in T1D patients compared to controls. However, we did not find any significant changes in standard or modern ocular surface markers (MMP-9 levels, HLA-DR expression) measured in patients with dry eye syndrome.</p>","PeriodicalId":39839,"journal":{"name":"Ceska a Slovenska Oftalmologie","volume":"81 Ahead of Print","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143075965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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