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1.
Arq. bras. oftalmol ; 88(1): e2023, 2025. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1568847

RESUMEN

ABSTRACT Purpose: To determine the clinical outcomes in patients after type 1 Boston keratoprosthesis surgery and the significance of ultrasound biomicroscopy imaging for postoperative follow-up. Methods: This retrospective analysis included 20 eyes of 19 patients who underwent corneal transplantation with type 1 Boston keratoprosthesis between April 2014 and December 2021. Data on patient demographics, preoperative diagnosis, visual acuity, and postoperative clinical findings were analyzed. Results: Type 1 Boston keratoprosthesis implantation resulted in intermediate- and long-term positive outcomes. However, blindness and other serious complications such as glaucoma, retroprosthetic membrane formation, endophthalmitis, or retinal detachment also occurred. The use of ultrasound biomicroscopy imaging allowed for better evaluation of the back of the titanium plate, anterior segment structures, and the relationship of the prosthesis with surrounding tissues, which provided valuable postoperative information. Conclusion: Regular lifetime monitoring and treatment are necessary in patients who undergo Boston type 1 keratoprosthesis implantation for high-risk corneal transplantation. ultrasound biomicroscopy imaging can be a valuable imaging technique for the evaluation of patients with Boston type 1 keratoprosthesis, providing important information on anterior segment anatomy and potential complications. Further studies and consensus on postoperative follow-up protocols are required to optimize the management of patients with Boston type 1 keratoprosthesis.

2.
Am J Ophthalmol ; 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39244000

RESUMEN

PURPOSE: Describe complications, functional success, and retention of the Lucia Keratoprosthesis (KPro). DESIGN: Retrospective interventional case series METHODS: The demographic data, baseline characteristics, complications, functional success, and retention were analyzed for Lucia KPro at Instituto de Oftalmologia Conde de Valenciana in Mexico City from 2021-2023. Multivariate regression analysis and Kaplan-Meier plots were performed to identify associations with functional failure. The main outcome measures were postoperative complications; functional success defined as best-corrected visual acuity (BCVA) ≥ 20/200 (LogMAR 1.0); and device retention rate. RESULTS: Forty-eight eyes of 48 patients (56.88% male) were studied. The mean age at implantation was 57.29 ± 15.63 years (range 27-91) with a mean follow-up of 20.5 ± 8.83 months (range: 3-40). Diagnostic indications for implantation included recurrent graft rejection (54.17%), autoimmune disease (20.83%), chemical injury (12.5%), and other (12.5%). At least one postoperative complication occurred in 75% of patients leading to 65 additional interventions (mean number of subsequent procedures: 1.35 ± 1.3, range 0-5). The preoperative BCVA was 2.40 ± 0.36 LogMAR. At the final follow-up, 62.5% had achieved functional success and 22.92% had a BCVA of 20/40 (LogMAR 0.3) or better. Glaucoma (adjusted OR: 469.74, 95% CI 5.02 - 43939.14, p=0.007) and retinal pathology before KPro (adjusted OR: 372.38, 95% CI 4.18 - 33162.11, p=0.009) were associated with functional failure. The device remained in place in 95.83% of recipients over the follow-up period. CONCLUSION: The Lucia KPro offers functional success in severe corneal diseases and excellent retention in the short to intermediate term.

3.
Curr Eye Res ; : 1-5, 2024 Sep 08.
Artículo en Inglés | MEDLINE | ID: mdl-39246004

RESUMEN

PURPOSE: Corneal neurotization (CN) is a novel, potentially curative surgical procedure for the treatment of neurothophic keratopathy (NK). Patients with severe NK can present with corneal opacification requiring optical keratoplasty, which would likely fail without a proper trophic support of corneal nerves in the recipient cornea. METHODS: This is a pilot study on 4 patients undergoing keratoplasty after CN. Pre- and postoperative data at 12, 24 months and at the last follow-up were collected for the examination of (i) best corrected visual acuity (BCVA), (ii) slit lamp examination and photograph acquisition with and without fluorescein staining, (iii) corneal aesthesiometry, (iv) in vivo confocal microscopy of the central cornea. Neurophysiological study of the corneal reflex before corneal graft and at last follow up was performed. RESULTS: Four female patients (47.25 ± 5.06 y.o.) underwent keratoplasty after CN (3 penetrating keratoplasty, 1 deep anterior lamellar keratoplasty). The mean interval between CN and keratoplasty was 22 (± 12) months. The mean graft survival time was 42 (± 25) months. Graft follow-up ranged from 72 to 132 months. At the final follow-up, BCVA was improved in 2 out of 4 patients. The mean corneal sensitivity was 11.9 ± 8.3 mm at last follow-up. In vivo confocal microscopy confirmed the presence of functioning nerves at the last follow-up in all patients. NK-related complications occurred in 3 eyes (2 persistent epithelial defect, 1 corneal melting). The former complication was successfully treated by autologous serum eye drops while the latter required repeated keratoplasty. CONCLUSIONS: Keratoplasty is a viable strategy to improve visual acuity in patients with corneal opacity who underwent CN for the treatment of NK. Even in the presence of functioning corneal nerves before keratoplasty, surgeons should be aware of the increased rate of NK-related complications that could require the need for repeated procedure.

4.
Ann Med ; 56(1): 2398723, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39247943

RESUMEN

PURPOSE: To evaluate the clinical characteristics and viral Colonization of corneas donated by volunteers with coronavirus disease 2019 (COVID-19) before and after corneal transplantation. METHODS: We retrospectively compared the characteristics and clinical outcomes of patients who received corneas from donors with and without a history of COVID-19 after corneal transplantation. Reverse transcription-polymerase chain reaction (RT-PCR) was performed to evaluate the expression of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA on ocular surfaces in corneal preservation solutions as well as the recipients' tears. Immunofluorescence was also performed to evaluate the expression of viral spike proteins in the corneas. Intraocular pressure (IOP) measurement, optical coherence tomography (OCT), and slit-lamp inspection at each follow-up examination were performed to assess the surgical efficacy. RESULTS: The RT-PCR results of eye surface swabs before corneal extraction, the corneal preservation solutions before transplantation as well as the recipients' tears were negative, thereby indicating the suitability for transplantation. No significant differences in IOP measurements, OCT findings, or in the incidence of post transplantation complications were observed between donors with and without COVID-19. CONCLUSIONS: Corneal transplantation using corneas from COVID-19 infected donors does not alter clinical outcomes when compared to controls receiving corneas from non-infected donors.


Asunto(s)
COVID-19 , Córnea , Trasplante de Córnea , SARS-CoV-2 , Donantes de Tejidos , Humanos , Masculino , Trasplante de Córnea/efectos adversos , Trasplante de Córnea/métodos , Femenino , Persona de Mediana Edad , Estudios Retrospectivos , Córnea/virología , Córnea/cirugía , Adulto , Anciano , ARN Viral/aislamiento & purificación , ARN Viral/análisis
5.
Eur J Ophthalmol ; : 11206721241284405, 2024 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-39275841

RESUMEN

PURPOSE: To explore the challenges of managing recurrent graft rejections in patients with Macular Corneal Dystrophy (MCD) undergoing Penetrating Keratoplasty (PKP) who also have an underlying diagnosis of Systemic Sclerosis, specifically the limited form known as CREST syndrome. METHODS: The case of a 47-year-old female diagnosed with MCD who underwent multiple PKPs over a 13 year period was reviewed. The patients treatment included extensive surgical interventions (PKPs, amniotic membrane transplatation, tarsorrhaphy) and medical management involving systemic and topical steroids and immunosuppressive therapy (Tacrolimus ointment). RESULTS: Initial PKP surgeries improved the patients vision, but subsequently graft rejections,both acute and chronic, required further surgical and medical interventions. Despite aggressive management, the patient experienced multiple graft failures, with the final visual outcome being significantly compromised (vision 6/60). the presence of CREST syndrome complicated the management and prognosis of graft survival. CONCLUSION: This case illustrates the significant impact of systemic autoimmune disorders like CREST syndrome on the prognosis of PKP in patients with MCD. It highlights the necessity for diligent systemic evaluation and possibly more aggressive immunosuppresive strategies to manage graft rejections and prolong graft survival in such complex clinical scenarios.

6.
Ophthalmic Epidemiol ; : 1-8, 2024 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-39288325

RESUMEN

PURPOSE: To evaluate co-morbid sociomedical conditions affecting corneal donor endothelial cell density and transplant suitability. METHOD(S): Corneal donor transplant information was collected from the CorneaGen eye bank between June 1, 2012 and June 30, 2016. A natural language processing algorithm was applied to generate co-morbid sociomedical conditions for each donor. Variables of importance were identified using four machine learning models (random forest, Glmnet, Earth, nnet), for the outcomes of transplant suitability and endothelial cell density. SHAP (SHapley Additive exPlanations) values were generated, with beeswarm and box plots to visualize the contribution of each feature to the models. RESULTS: With a total of 23,522 unique donors, natural language processing generated 30,573 indices, which were reduced to 41 most common co-morbid sociomedical conditions. For transplant suitability, hypertension ranked the top overall variable of importance in two models. Hypertension, chronic obstructive pulmonary disease, history of smoking, and alcohol use appeared consistently in the top variables of importance. By SHAP feature importance, hypertension (0.042), alcohol use (0.017), ventilation of donor (0.011), and history of smoking (0.010) contributed the most to the transplant suitability model. For endothelial cell density, hypertension was the sociomedical condition of highest importance in three models. SHAP scores were highest among the sociomedical conditions of hypertension (0.037), alcohol use (0.013), myocardial infarction (0.012), and history of smoking (0.011). CONCLUSION: In a large cohort of corneal donor eyes, hypertension was identified as the most common contributor to machine learning models examining sociomedical conditions for corneal donor transplant suitability and endothelial cell density.

7.
JMIR Med Inform ; 12: e48407, 2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39284177

RESUMEN

BACKGROUND: Corneal transplantation, also known as keratoplasty, is a widely performed surgical procedure that aims to restore vision in patients with corneal damage. The success of corneal transplantation relies on the accurate and timely management of patient information, which can be enhanced using electronic health records (EHRs). However, conventional EHRs are often fragmented and lack standardization, leading to difficulties in information access and sharing, increased medical errors, and decreased patient safety. In the wake of these problems, there is a growing demand for standardized EHRs that can ensure the accuracy and consistency of patient data across health care organizations. OBJECTIVE: This paper proposes the use of openEHR structures for standardizing corneal transplantation records. The main objective of this research was to improve the quality and interoperability of EHRs in corneal transplantation, making it easier for health care providers to capture, share, and analyze clinical information. METHODS: A series of sequential steps were carried out in this study to implement standardized clinical records using openEHR specifications. These specifications furnish a methodical approach that ascertains the development of high-quality clinical records. In broad terms, the methodology followed encompasses the conduction of meetings with health care professionals and the modeling of archetypes, templates, forms, decision rules, and work plans. RESULTS: This research resulted in a tailored solution that streamlines health care delivery and meets the needs of medical professionals involved in the corneal transplantation process while seamlessly aligning with contemporary clinical practices. The proposed solution culminated in the successful integration within a Portuguese hospital of 3 key components of openEHR specifications: forms, Decision Logic Modules, and Work Plans. A statistical analysis of data collected from May 1, 2022, to March 31, 2023, allowed for the perception of the use of the new technologies within the corneal transplantation workflow. Despite the completion rate being only 63.9% (530/830), which can be explained by external factors such as patient health and availability of donor organs, there was an overall improvement in terms of task control and follow-up of the patients' clinical process. CONCLUSIONS: This study shows that the adoption of openEHR structures represents a significant step forward in the standardization and optimization of corneal transplantation records. It offers a detailed demonstration of how to implement openEHR specifications and highlights the different advantages of standardizing EHRs in the field of corneal transplantation. Furthermore, it serves as a valuable reference for researchers and practitioners who are interested in advancing and improving the exploitation of EHRs in health care.


Asunto(s)
Trasplante de Córnea , Registros Electrónicos de Salud , Humanos , Trasplante de Córnea/métodos , Trasplante de Córnea/normas , Registros Electrónicos de Salud/normas
8.
Eur J Ophthalmol ; : 11206721241286252, 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39295314

RESUMEN

PURPOSE: To describe features in silicone oil keratopathy using multimodal imaging and histopathological examination. METHODS: Case report. RESULT: A 21-year-old male developed right corneal decompensation in the heavy SO (HSO)-filled eye. The patient underwent an initial lensectomy, pars plana vitrectomy (PPV) and HSO tamponade due open-globe injury with corneal wound, lens damage and in two retained intravitreal glass foreign bodies, followed by a revisional PPV with HSO tamponade due to tractional detachment associated with proliferative vitreoretinopathy and epiretinal membrane. One month after the removal of HSO, ophthalmic examination of the right eye showed corneal decompensation. The AS-OCT showed corneal thickening, intrastromal scattered hyperreflective dots and large rounded/oval hyporeflective space; the latter were suggestive of emulsified HSO microbubbles and larger bubbles, respectively. In vivo confocal microscopy showed multiple presumed SO-related corneal changes, including hyper-reflective fibrotic changes in the basal epithelium, reduced density ans altered morphology of keratocytes cell population, increased pleomorphism and polymegathism of the endothelium with reduced endothelial cell, and presence of inflammatory cells. The patient underwent a penetrating keratoplasty, pupilloplasty and retropupillary iris-claw IOL implantation. The histopathological examination of the host corneal button showed Descemet's membrane irregularity and thickened corneal stroma with focal intrastromal silicone oil vacuoles, surrounded by macrophages. CONCLUSION: We described for the first time intrastromal hyperreflective dots as a sign associated with SO-related keratopathy. Moreover, this case report supports the ability of emulsified SO to penetrate the cornea inducing a local low-grade chronic inflammation.

9.
Curr Eye Res ; : 1-7, 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39229665

RESUMEN

PURPOSE: Dermoid excision combined with lamellar keratoplasty was one of the most common surgical techniques for corneal dermoid. Due to the huge shortage of corneal donors, small incision lenticule extraction (SMILE) derived lenticules might be the novel and feasible corneal grafts instead of traditional corneal donors. Therefore, we tried to use FG boned multi-layer lenticules as grafts in the treatment of corneal dermoid. METHODS: Five patients (the oldest patient was 54 years old and the youngest case was 5 years old) were diagnosed with corneal dermoid and complaining of blurred vision or unsatisfied cosmetic appearance. All patients underwent corneal dermoid excision combined with FG boned multi-layer corneal lenticules transplantation. Slit-lamp microscopy and anterior-segmental optical coherence tomography(AS-OCT)were used to observe ocular appearance, corneal grafts survival, epithelialization, transparency, interlamellar fluid accumulation and the degradation of FG. The preoperative and postoperative change of best-corrected visual acuity (BCVA) and astigmatism were respectively recorded. RESULTS: All patients were satisfied with the postoperative cosmetic results. BCVA had been increased and astigmatism had been decreased in all cases. We observed that the FG boned multi-layer corneal lenticules were covered with smooth corneal epithelium in one week after transplantation and successfully adhered to the corneal beds, without any dislocation or interlayer separation. FG was gradually degraded and absorbed within 1 month after surgery. The lenticule grafts grew well without rejection and kept transparency during the follow-up period. CONCLUSIONS: FG boned multi-layer lenticules would be the novel and feasible substitute for lamellar keratoplasty in the treatment of corneal dermoid. FG could not be only used as binder adhering multi-layer lenticules, closing the interlayer space of multi-layer lenticules, preventing the formation of interlayer fluid, but also increasing the thickness and toughness of lenticules, and therefore which is more facilitate to intraoperative suture.

10.
Regen Med ; 19(6): 303-315, 2024 Jun 02.
Artículo en Inglés | MEDLINE | ID: mdl-39177571

RESUMEN

Aim: The escalating demand for corneal transplants significantly surpasses the available supply. To bridge this gap, we concentrated on ethical and sustainable corneal grafting sources. Our objective was to create viable corneal scaffolds from preserved slaughterhouse waste.Materials & methods: Corneas were extracted and decellularized from eyeballs that had been refrigerated for several days. These scaffolds underwent evaluation through DNA quantification, histological analysis, surface tension measurement, light propagation testing, and tensile strength assessment.Results: Both the native and acellular corneas (with ~90% DNA removed using a cost-effective and environmentally friendly surfactant) maintained essential optical and biomechanical properties for potential clinical use.Conclusion: Our method of repurposing slaughterhouse waste, stored at 4°C for several days, to develop corneal scaffolds offers a sustainable and economical alternative xenograft model.


[Box: see text].


Asunto(s)
Mataderos , Córnea , Andamios del Tejido , Animales , Andamios del Tejido/química , Córnea/citología , Ovinos , Trasplante de Córnea/métodos , Ingeniería de Tejidos/métodos
11.
Case Rep Ophthalmol ; 15(1): 648-655, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39144639

RESUMEN

Introduction: Complex corneal conditions present surgical challenges and necessitate innovation. Here, we present two cases where we performed intraocular lens trans-scleral fixation using the double-needle Yamane technique, followed by penetrating keratoplasty and vitrectomy using a temporary Landers wide-field keratoprosthesis. Case Presentation: Case 1 involved a 70-year-old man with an aphakic eye of bullous keratopathy and corneal opacity owing to multiple penetrating and endothelial keratoplasty, endophthalmitis, and herpetic keratitis. His visual acuity was counting fingers at 20 cm before surgery. Penetrating keratoplasty with vitrectomy and intraocular lens scleral fixation was performed using the double-needle Yamane technique, and 10 months postoperatively, his best-corrected visual acuity improved to 0.6, presenting a clear cornea. Case 2 involved a 62-year-old man who underwent penetrating keratoplasty twice for corneal perforation and therapeutic penetrating keratoplasty with vitrectomy for traumatic globe rupture, resulting in the loss of the intraocular lens. The patient exhibited graft failure, and his best-corrected visual acuity was 0.03. Utilizing a temporary Landers wide-field keratoprosthesis, we performed penetrating keratoplasty and intraocular lens trans-scleral fixation without complications. His final best-corrected visual acuity improved to 0.15 with a clear cornea. Conclusions: Trans-scleral fixation of intraocular lens with penetrating keratoplasty, using temporary Landers wide-field keratoprosthesis, yielded positive clinical outcomes without serious complications.

12.
Eur J Ophthalmol ; : 11206721241267277, 2024 Aug 09.
Artículo en Inglés | MEDLINE | ID: mdl-39119830

RESUMEN

PURPOSE: In Descemet Membrane Endothelial Keratoplasty (DMEK) a gas bubble is usually used to attach the graft to the host cornea. In this study, we observed the bubble size and bubble-graft coverage at different gaze angles following DMEK. METHODS: This observational prospective study analyzed 465 images of patients who underwent an uneventful DMEK. Intraoperatively, the anterior chamber was filled up to 90% of its volume with a 20% Sulfur Hexafluoride (SF6) gas-air mixture. Postoperatively, the bubble was photographed daily in different gaze angles ranging from a supine position (0°) to an upright position (90°) and a slightly inclined position (105°). The primary outcomes were bubble-graft coverage and bubble diameters depending on the gaze angle and time after DMEK. RESULTS: The highest bubble-graft coverage was achieved at a 0° gaze angle at all times of measurement. In the first 48 h after DMEK, the mean bubble-graft coverage was over 85% at a gaze angle between 0° and 45°. Starting 72 h after DMEK, the graft coverage declined at all gaze angles. The graft coverage at a 0° gaze angle was 88.61 ± 10.90% after 96 postoperative hours, while the graft coverage was below 85% at all other gaze angles. CONCLUSION: Our clinical results provide novel insight into variation in bubble-graft coverage as a function of gaze angle and may be used to aid in patient counselling for appropriate body positioning following DMEK to prevent early graft detachment. Maintaining supine positioning seems to be most advantageous starting 48 h after DMEK.

13.
Cell Tissue Bank ; 2024 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-39212857

RESUMEN

Bowman's layer is an acellular corneal structure, which is considered to be a specially modified anterior stroma. It is presumed, that it forms as a result of ongoing epithelial-stromal interactions and no clear physiological purpose has been proven. Despite this fact, Bowman's layer has found its place in corneal transplantation. It has been performed for over a decade, mainly in treatment of advanced keratoconus with multiple modifications. Transplantation of Bowman's layer can be expected to become a widely used surgical procedure in the treatment of many corneal pathologies involving fragmentation and destruction of Bowman's layer. This article aims to summarize information available on its structure, possible function, and transplantation. A thorough literature search was performed in the PubMed database and Google Scholar using keywords: Bowman's layer, structure, function, preparation and corneal transplantation. All the relevant sources were used, which represent 77 peer-reviewed articles with information corcerning the topic of this article.

14.
Clin Ophthalmol ; 18: 2083-2091, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39051020

RESUMEN

Purpose: To assess the efficiency and safety of an intracanalicular dexamethasone insert (Dextenza, Ocular Therapeutix, Inc) supplemented with a reduced-frequency topical drop regimen in mitigating pain and inflammation post-penetrating keratoplasty (PKP), Descemet stripping endothelial keratoplasty (DSEK), and Descemet membrane endothelial keratoplasty (DMEK), compared to standard topical corticosteroid therapy. Patients and Methods: Eyes were categorized within the DSEK, DMEK, or PKP groups based on ocular characteristics and surgical indications. Randomized in a 1:1 ratio, the intervention group received Dextenza alongside a lowered drop frequency, while the control group followed a conventional drop protocol with no Dextenza. Primary outcomes included average pain scores and absence of anterior chamber cell and flare. Secondary outcomes included delayed re-epithelialization, corneal rejection episodes, instances of intraocular pressure (IOP) elevation >10mmHg above baseline, cystoid macular edema (CME) occurrence, and the necessity for steroid rescue. Results: The study included 30 eyes (10 PKP, 10 DSEK, 10 DMEK). Mean pain scores (0-100 scale; (0-39 = mild pain, 40-69 = moderate pain, 70-100 = severe pain) in the Dextenza group were 3.6 (PKP), 12 (DSEK), 8 (DMEK), compared to 1.2 (PKP), 0 (DSEK), and 4 (DMEK) in controls. PKP control (n=5): 1 delayed re-epithelialization, 1 IOP elevation, 2 CME. DSEK control (n=5): 1 corneal rejection, 1 IOP elevation, 1 CME. DMEK control (n=5): 1 IOP elevation, 1 CME. DMEK Dextenza (n=5): 1 delayed re-epithelialization, 1 CME. No cases required steroid rescue, and no cell or flare was observed one-week post-surgery. There were no statistically significant differences in pain, delayed re-epithelialization, IOP elevation, corneal rejection, or CME between the Dextenza and control groups regardless of the type of corneal transplantation performed. Conclusion: Dextenza, when combined with a lower-frequency drop regimen, demonstrates a safety profile comparable to that of a traditional higher-frequency drop protocol in terms of pain management and the adverse events explored in this study, potentially enhancing postoperative drop adherence.

15.
Case Rep Ophthalmol ; 15(1): 518-524, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39015243

RESUMEN

Introduction: Corneal graft detachment is a major postoperative complication of Descemet's stripping automated endothelial keratoplasty (DSAEK). When a corneal graft becomes detached, corneal endothelial function generally fails, and repeat corneal transplantation is required. Herein, we report a rare case in which a transparent cornea was maintained after the removal of a dislocated DSAEK graft. Case Presentation: A 79-year-old woman with a residual lens cortex who had undergone cataract surgery was referred to our hospital. The cortex was removed, and bullous keratopathy progressed. Six months after the initial surgery, DSAEK was performed under topical anesthesia without any complications. Although the corneal graft had attached fairly well, it detached from the host cornea 3 weeks later. Two months after DSAEK, an air tamponade was used to treat the anterior chamber with single interrupted suturing; however, the graft detached again, except for the suture site. Because the detached cornea became cloudy in the anterior chamber, it was surgically removed 8 months after DSAEK. Accordingly, the host cornea transparency improved to a best-corrected visual acuity of 0.8 with a rigid gas permeable lens and a central corneal thickness of 580 µm. The corneal endothelial cell density was 995 cells/mm2. Conclusion: Removal of the corneal graft from the dislocated cloudy graft improved the visual acuity of this patient after DSAEK. The condition of the cornea should be carefully monitored after corneal endothelial transplantation, even after the graft has been dislocated.

16.
Front Ophthalmol (Lausanne) ; 4: 1361704, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38984120

RESUMEN

Corneal transplantation is a common treatment for corneal diseases. Secondary glaucoma after corneal transplantation is the second leading cause of failure of keratoplasty. This article reviews the mechanism and treatment of secondary glaucoma after corneal transplantation.

17.
Sci Rep ; 14(1): 15319, 2024 07 03.
Artículo en Inglés | MEDLINE | ID: mdl-38961236

RESUMEN

To evaluate the impact of excimer laser-assisted deep anterior lamellar keratoplasty (Exc-DALK) and excimer laser-assisted penetrating keratoplasty (Exc-PKP) on subfoveal choroidal thickness (SFCT) in eyes with advanced keratoconus. A retrospective comparative clinical study, which compares the outcomes of 24 eyes treated with Exc-DALK (G1) against matched group of 43 eyes treated with Exc-PKP (G2) at both 2 months (T1) and 2 years (T2) postoperatively. Main outcomes included best-corrected visual acuity (BCVA), central macular thickness (CMT), and SFCT. Preoperatively, there were no significant differences between both groups regarding BCVA, CMT or SFCT (p > 0.05). There were no significant differences between both groups regarding BCVA at both follow-ups (p > 0.05). There were no significant differences between both groups regarding CMT at both follow-ups (p > 0.05). SFCT was higher in G2 than G1 at both follow-ups (p < 0.01). Compared to preoperative SFCT, there were no significant changes in SFCT in G1 at both follow-ups (p > 0.05). In G2, SFCT increased significantly at T1 (p < 0.01) and did not differ significantly at T2 (p = 0.17). SFCT increased significantly after Exc-PKP but not after Exc-DALK, which might indicate that Exc-DALK affects the choroid less and thus could represent a less traumatic approach to ocular tissue than Exc-PKP.


Asunto(s)
Coroides , Queratoplastia Penetrante , Agudeza Visual , Humanos , Coroides/patología , Coroides/cirugía , Coroides/diagnóstico por imagen , Masculino , Femenino , Adulto , Queratoplastia Penetrante/métodos , Estudios Retrospectivos , Láseres de Excímeros/uso terapéutico , Queratocono/cirugía , Tomografía de Coherencia Óptica/métodos , Adulto Joven , Resultado del Tratamiento , Persona de Mediana Edad , Trasplante de Córnea/métodos
18.
Jpn J Ophthalmol ; 2024 Jul 31.
Artículo en Inglés | MEDLINE | ID: mdl-39083145

RESUMEN

Endothelial transplantation has recently been accepted worldwide, in the long history of corneal transplantation. The introduction of endothelial keratoplasty (Descemet stripping automated endothelial keratoplasty and Descemet membrane endothelial keratoplasty) has enabled us to expand the surgical indications owing to the low incidence of rejection and quick recovery of visual function. New technologies have been developed to ensure stable postoperative outcomes with a shorter learning curve, such as transplantation using cultured human endothelial cells and induced pluripotent stem cells (iPS) or new devices such as artificial endothelium. This review discusses the history and characteristics of corneal transplantation alongside new treatment options that may offer hope for patients with endothelial disease in the future.

19.
BMC Ophthalmol ; 24(1): 234, 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38831303

RESUMEN

BACKGROUND: Ochrobactrum anthropi is widely distributed and primarily infects patients with compromised immune functions . Historically, O. anthropi has been considered to possess low toxicity and pathogenicity; however, recent studies suggest that it may in fact cause severe purulent infections. In this case study, we examine a case of O. anthropi infection following corneal transplantation, exploring the occurrence and outcomes of such post-operative infections. CASE PRESENTATION: A retrospective analysis of cases involved examinations, genetic testing for diagnosis, and subsequent treatment. In patients undergoing partial penetrating keratoplasty with a fungal corneal ulcer perforation, anterior chamber exudation and purulence were observed post-surgery. Despite antifungal treatment, genetic testing of the anterior chamber fluid and purulent material confirmed O. anthropi infection. The use of antimicrobial treatment specifically targeting O. anthropi was found to be effective in treating the infection. CONCLUSION: Inflammatory reactions following corneal transplantation should be should be monitored for the presence of other infections. Genetic testing has significant implications for clinical diagnosis and treatment.


Asunto(s)
Infecciones Bacterianas del Ojo , Infecciones por Bacterias Gramnegativas , Ochrobactrum anthropi , Humanos , Ochrobactrum anthropi/aislamiento & purificación , Infecciones por Bacterias Gramnegativas/diagnóstico , Infecciones por Bacterias Gramnegativas/microbiología , Infecciones por Bacterias Gramnegativas/etiología , Infecciones Bacterianas del Ojo/diagnóstico , Infecciones Bacterianas del Ojo/microbiología , Infecciones Bacterianas del Ojo/etiología , Masculino , Queratoplastia Penetrante/efectos adversos , Úlcera de la Córnea/microbiología , Úlcera de la Córnea/diagnóstico , Úlcera de la Córnea/etiología , Trasplante de Córnea/efectos adversos , Femenino , Persona de Mediana Edad , Antifúngicos/uso terapéutico
20.
Int Ophthalmol ; 44(1): 289, 2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38937283

RESUMEN

PURPOSE: To evaluate the impact of an educational video in improving awareness of eye donation among non-medical healthcare workers at a tertiary health centre. METHODS: A socio-behavioural study on knowledge and attitude towards eye donation was conducted among 373 non-medical healthcare workers through a printed semi-structured questionnaire before and after viewing a bilingual educational video. The responses were evaluated and scored. RESULTS: Pre-intervention, only 5.4% of the participants had adequate knowledge, which improved significantly to 71.6% after watching the video (P < .001). Respondents with elementary school education showed the greatest change in knowledge. Pre-intervention, 72.4% were willing to donate their eyes, which significantly increased to 89.5% after watching the video. Pre-intervention, 66.22% showed a "highly favourable" attitude, which improved to 97.86% after watching the video. CONCLUSION: The 25 min video about eye donation and eye banking significantly changed the participants' knowledge, willingness, and attitude. Hence, media-based (video) awareness platforms may be valuable for improving the general public's knowledge and attitude towards eye donation. This may help in enhancing the eye donation rate in the long term.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Personal de Salud , Centros de Atención Terciaria , Obtención de Tejidos y Órganos , Humanos , Masculino , Femenino , Adulto , Encuestas y Cuestionarios , Obtención de Tejidos y Órganos/métodos , Personal de Salud/educación , Persona de Mediana Edad , Adulto Joven , Donantes de Tejidos/psicología , Grabación en Video , Educación en Salud/métodos
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