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The effect of visual acuity measurement on triage effectiveness in an ophthalmic emergency departmentPurpose: The effect of pre-triage visual acuity (VA) measurement on triage accuracy in a busy ophthalmic casualty department was investigated as a possible means to improve triage quality. Methods: All 576 patients attending the accident and emergency department (A&E) at the Birmingham and Midland Eye Centre (BMEC) over a period of 4 days were included in this prospective cross-sectional study. Patients were assigned to two groups: those who underwent a VA measurement prior to triage (n = 242) and a control group who did not have a VA measurement (n = 234). Clinicians who were masked from the allocation also assessed whether they agreed with the triage decision after assessing each patient. Results: Triage outcomes were recorded for 469 (81%) patients. Those with a pre-triage VA measurement were more likely to be assessed as more urgent (p = 0.005) and less likely to be discharged (p = 0.04). 248 (43%) patients had clinician response with corresponding triage records, of which 136 (55%) had prior VA measurement and 112 (45%) were in the control group. Clinicians responded that patients with VA measurement prior to triage were more accurately triaged than the control group (66% and 54%; p = 0.03). Conclusion: VA measurement prior to triage can help improve triage accuracy and allow better allocation of resources at an overcrowded eye-dedicated emergency department. However, waiting times may increase due to longer triage duration and more patients to be triaged into urgent pathway. Greater staffing resources may be necessary to complement the proposed change to avoid undermining triage efficiency.
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Assessing clinicians' documentation of vision in older adults who presented with a fall at the Accident and Emergency Department of Northampton General HospitalBackground Falls among elderly adults are one of the most common reasons that could lead to injury and modality, as vision is one of the modifiable risk factors for falls. By assessing it, we can detect those needing further follow-up with opticians or ophthalmologists, lowering the risk of falls secondary to poor vision. Methods Data were collected and reviewed retrospectively from a consecutive list of patients who presented with a fall or head injury to the Accident and Emergency Department at Northampton General Hospital. A total of 180 patients aged 75 years or older were randomly selected between November 2022 and January 2023. This audit measured the vision documentation in the vision assessment tool used in the Emergency Department at Northampton General Hospital and was based on the National Institute for Health and Clinical Excellence (NICE) and the Royal College of Physicians guidelines. Results Out of 180 patients in the sample, 34 (19%) had their visual assessments documented. Among them, around six (17.6%) out of 34 patients had a full vision assessment documenting all the sections in the vision assessment tool. Five (14.7%) out of 34 patients and 11 (32.3%) out of 34 patients did not have documentation about their distance and near vision, respectively. The visual fields were not documented in 22 (64.7%) out of 34 patients, and no assessment of the eye movements was reported in 16 (47%) out of 34 patients. Discussion Most of the patients in the Emergency Department lacked visual documentation, resulting in low compliance with the standards. One of the factors that contribute to elderly people's falling is low vision. Uncorrected refractive errors are one of the main causes of poor vision, but their correction is also associated with an increased risk of falls among elderly patients, as they require more time to adapt to changes in prescription (e.g., new glasses). In addition, patients who suffer from some eye conditions, such as glaucoma or macular degeneration, also have a high incidence of falls caused by an impairment of the visual fields. Conclusions All patients over 75 years old who presented with a fall to the Emergency Department should have a vision assessment. Vision documentation is essential to identify patients with vision impairment needing to receive an eye assessment after their discharge to reduce the risk of falls derived from poor vision. Strategies to improve this include training and the dissemination of information (for example, posters), which could help increase documentation rates.
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Artificial intelligence chatbots as sources of patient education material for cataract surgery : ChatGPT-4 versus Google BardObjective: To conduct a head-to-head comparative analysis of cataract surgery patient education material generated by Chat Generative Pre-trained Transformer (ChatGPT-4) and Google Bard. Methods and analysis: 98 frequently asked questions on cataract surgery in English were taken in November 2023 from 5 trustworthy online patient information resources. 59 of these were curated (20 augmented for clarity and 39 duplicates excluded) and categorised into 3 domains: condition (n=15), preparation for surgery (n=21) and recovery after surgery (n=23). They were formulated into input prompts with 'prompt engineering'. Using the Patient Education Materials Assessment Tool-Printable (PEMAT-P) Auto-Scoring Form, four ophthalmologists independently graded ChatGPT-4 and Google Bard responses. The readability of responses was evaluated using a Flesch-Kincaid calculator. Responses were also subjectively examined for any inaccurate or harmful information. Results: Google Bard had a higher mean overall Flesch-Kincaid Level (8.02) compared with ChatGPT-4 (5.75) (p<0.001), also noted across all three domains. ChatGPT-4 had a higher overall PEMAT-P understandability score (85.8%) in comparison to Google Bard (80.9%) (p<0.001), which was also noted in the 'preparation for cataract surgery' (85.2% vs 75.7%; p<0.001) and 'recovery after cataract surgery' (86.5% vs 82.3%; p=0.004) domains. There was no statistically significant difference in overall (42.5% vs 44.2%; p=0.344) or individual domain actionability scores (p>0.10). None of the generated material contained dangerous information. Conclusion: In comparison to Google Bard, ChatGPT-4 fared better overall, scoring higher on the PEMAT-P understandability scale and exhibiting more faithfulness to the prompt engineering instruction. Since input prompts might vary from real-world patient searches, follow-up studies with patient participation are required.
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Pathophysiological Aspects of Ocular Toxoplasmosis: Host-parasite Interactions.Purpose: This review aims to present the state of the art to understand the pathophysiology of ocular toxoplasmosis (OT), providing further foundations that would help to improve the future treatment and prognosis of this potentially blinding disease. Methods: A thorough literature search was performed in PubMed database. An additional search was made in Google Scholar to complete the collected items. Results: Toxoplasma gondii ocular infection is one of the most frequent causes of posterior uveitis. Despite the ocular barriers, the parasite reaches the eye through different mechanisms. Once inside, it remains encysted livelong within the retina, and recurrences cannot be completely avoided. The complexity of host-parasite interactions, leading to the success of this parasite, encompasses host factors such as genetic predisposition, immune status, and age; and parasite factors such as strain diversity, virulence, phylogenetic origin, and geographical distribution. These factors influence the clinical presentation, course, and progression of the disease. Additional elements, such as pregnancy, eating behavior, and environmental, social, and cultural factors may also contribute to this complex balance. Conclusions: The host-parasite interaction in OT is a complex and multifactorial relationship, with the parasite always on the driving edge of the game. There are still multiple incompletely understood fields to be investigated. Future research would permit further insight into the immune-biology of the parasite and recognition of the host-parasite interplay to improve the diagnostic and management performance.
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Patient perceptions on telemedicine eye clinics during COVID-19 pandemic.Patient perceptions on telemedicine eye clinics during COVID-19 pandemic
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Primary retinopexy in preventing retinal detachment in a tertiary eye hospital: a study of 1157 eyes.Purpose: Retinopexy is the most common vitreo-retinal procedure performed in the eye emergency department and significantly reduces the risk of a rhegmatogenous retinal detachment (RRD). There are various indications for retinopexy, with the most common being horseshoe-tears (HST). Multiple treatment techniques exist, ranging from slit-lamp laser-retinopexy, indirect laser-retinopexy or cryopexy. We report on our primary retinopexy 6-month RRD rate, repeat retinopexy rate and compare outcomes of different indications and treatment modalities. Methods: Retrospective consecutive case series of 1157 patients attending Birmingham and Midlands Eye Centre, UK between January 2017 and 2020. Results: The RRD rate at 6 months was 3.9%, with 19.1% requiring subsequent retinopexies. Multivariate Cox survival regression analysis showed that significant risk factors for RRD following primary retinopexy included male gender (p = 0.012), high myopia (≤ - 6.00D, p = 0.004), HST (compared to round holes, p = 0.026) and primary cryopexy (compared to slit-lamp laser, p = 0.014). HST was the most common indication for retinopexy (812 [70.2%]) in which 118 (14.5%) had multiple tears. Slit-lamp laser was used in 883 (76.3%) of cases. The rate for subsequent epiretinal membrane peel surgery was 3 (0.3%) and was higher in eyes that required multiple retinopexy procedures (p = 0.035). Conclusion: With our large cohort of patients over three years, we provide additional evidence on the RRD and subsequent retinopexy rate after primary retinopexy. Further retinopexy is a common occurrence, particularly in high-risk retinal tears such as HST. Strict monitoring and prompt follow-up after retinopexy is important to prevent progression to RRD and should be of priority in the clinicians post-retinopexy management plan, particularly in those with associated risk factors.
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Public perceptions of eye symptoms and hospital services during the first UK lockdown of the COVID-19 pandemic: a web survey study.Objective: This study aimed to explore the British public's healthcare-seeking beliefs concerning eye symptoms, and assess how the first COVID-19 lockdown influenced these. Methods and analysis: An anonymous web-based survey was disseminated through mailing lists and social media between June and August 2020. The survey sought participants' views on the severity and urgency of the need for medical review for four ophthalmic and two general medical scenarios on a five-point scale. Participants were asked to answer questions twice: once ignoring the COVID-19 pandemic, and once taking this into account, with additional questions asked to identify factors influencing the decision to seek medical attention and ward admission. Results: A total of 402 participants completed the survey (mean age 61.6 years, 63.1% female and 87.7% of white ethnicity). Scores for symptom severity and urgency of medical review increased significantly with the severity of the clinical scenario (both p<0.001). However, participants gave significantly lower scores for the urgency of medical attention when accounting for the COVID-19 pandemic (compared with no pandemic) for all scenarios (all p<0.001). Younger age, greater deprivation and non-white ethnicity were correlated with a lower perception of seriousness and urgency of medical attention. Conclusions: During the first UK lockdown of the COVID-19 pandemic, reduced urgency of medical review for ocular and systemic pathologies was reported in response to the pandemic, which represents a barrier to healthcare-seeking behaviour. This has the potential to critically delay medical review and timely management, negatively impacting patient outcomes.
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Qualitative assessment of YouTube videos as a source of patient information for cochlear implant surgeryBackground: YouTube is increasingly used as a source of healthcare information. This study evaluated the quality of videos on YouTube about cochlear implants. Methods: YouTube was searched using the phrase 'cochlear implant'. The first 60 results were screened by two independent reviewers. A modified Discern tool was used to evaluate the quality of each video. Results: Forty-seven videos were analysed. The mean overall Discern score was 2.0 out of 5.0. Videos scored higher for describing positive elements such as the benefits of a cochlear implant (mean score of 3.4) and scored lower for negative elements such as the risks of cochlear implant surgery (mean score of 1.3). Conclusion: The quality of information regarding cochlear implant surgery on YouTube is highly variable. These results demonstrated a bias towards the positive attributes of cochlear implants, with little mention of the risks or uncertainty involved. Although videos may be useful as supplementary information, critical elements required to make an informed decision are lacking. This is of particular importance when patients are considering surgery.
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Real-World Outcomes in Diabetic Macular Edema for the 0.2 µg/Day Fluocinolone Acetonide Implant: Case Series from the Midlands, UK.Aim: To investigate real-world effectiveness and safety of fluocinolone acetonide (FAc) implant over three years of treatment in eyes with diabetic macular edema (DME) in a population with large ethnic diversity. Methods: This audit of three large treatment centres in the UK involved retrospective collection of outcome data (best recorded visual acuity [BRVA] by Early Treatment Diabetic Retinopathy Study [ETDRS] letters, central retinal thickness [CRT], intraocular pressure [IOP] and use of supplementary treatments) from patients with DME treated with 0.2 µg/day FAc intravitreal implant with three-year follow-up expected. Results: A total of 96 eyes were included. Ninety (93.8%) eyes had received prior intravitreal treatment. Increases in mean BRVA were significant at one, two and three years (p<0.05). Overall, 78.1% of eyes gained or maintained BRVA; just over 50% gained ≥5 letters, representing a functional response. Eleven (11.6%) patients lost ≥10 letters by year three. Decreases in central retinal thickness (CRT) nearing 200 µm in the first year were sustained to three years (p < 0.0001). Patients with baseline VA ≥60 letters maintained their BRVA throughout follow-up, while significant improvements at month 12 (p<0.0001) in those with baseline BRVA <60 letters were maintained through month 36 (p < 0.005). Fifty-three (55.2%) eyes required no supplementary therapy during follow-up. Increases in IOP to ≥30 mmHg and ≥25 mmHg were seen in 12 (12.5%) and 23 (24.0%) eyes, respectively. Conclusion: This study confirms the effectiveness and tolerability of FAc implant up to 36 months in a real-world setting, highlighting the importance of early treatment for sustaining functional vision for patients.
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Study of Optimal Perimetric Testing In Children (OPTIC): developing consensus and setting research priorities for perimetry in the management of children with glaucoma.Background: Perimetry is important in the management of children with glaucoma, but there is limited evidence-based guidance on its use. We report an expert consensus-based study to update guidance and identify areas requiring further research. Methods: Experts were invited to participate in a modified Delphi consensus process. Panel selection was based on clinical experience of managing children with glaucoma and UK-based training to minimise diversity of view due to healthcare setting. Questionnaires were delivered electronically, and analysed to establish 'agreement'. Divergence of opinions was investigated and resolved where possible through further iterations. Results: 7/9 experts invited agreed to participate. Consensus (≥5/7 (71%) in agreement) was achieved for 21/26 (80.8%) items in 2 rounds, generating recommendations to start perimetry from approximately 7 years of age (IQR: 6.75-7.25), and use qualitative methods in conjunction with automated reliability indices to assess test quality. There was a lack of agreement about defining progressive visual field (VF) loss and methods for implementing perimetry longitudinally. Panel members highlighted the importance of informing decisions based upon individual circumstances-from gauging maturity/capability when selecting tests and interpreting outcomes, to accounting for specific clinical features (e.g. poor IOP control and/or suspected progressive VF loss) when making decisions about frequency of testing. Conclusions: There is commonality of expert views in relation to implementing perimetry and interpreting test quality in the management of children with glaucoma. However, there remains a lack of agreement about defining progressive VF loss, and utilising perimetry over an individuals' lifetime, highlighting the need for further research.
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The conjunctival extracellular matrix, related disorders and development of substrates for conjunctival restorationThe conjunctiva can be damaged by numerous diseases with scarring, loss of tissue and dysfunction. Depending on extent of damage, restoration of function may require a conjunctival graft. A wide variety of biological and synthetic substrates have been tested in the search for optimal conditions for ex vivo culture of conjunctival epithelial cells as a route toward tissue grafts. Each substrate has specific advantages but also disadvantages related to their unique physical and biological characteristics, and identification and development of an improved substrate remains a priority. To achieve the goal of mimicking and restoring a biological material, requires information from the material. Specifically, extracellular matrix (ECM) derived from conjunctival tissue. Knowledge of the composition and structure of native ECM and identifying contributions of individual components to its function would enable using or mimicking those components to develop improved biological substrates. ECM is comprised of two components: basement membrane secreted predominantly by epithelial cells containing laminins and type IV collagens, which directly support epithelial and goblet cell adhesion differentiation and growth and, interstitial matrix secreted by fibroblasts in lamina propria, which provides mechanical and structural support. This review presents current knowledge on anatomy, composition of conjunctival ECM and related conjunctival disorders. Requirements of potential substrates for conjunctival tissue engineering and transplantation are discussed. Biological and synthetic substrates and their components are described in an accompanying review.
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The impact of COVID-19 on traumatic eye emergencies needing surgery.The impact of COVID-19 on traumatic eye emergencies needing surgery
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The impact of the COVID-19 pandemic on microbial keratitis presentation patternsBackground: Microbial keratitis (MK) is the most common non-surgical ophthalmic emergency, and can rapidly progress, causing irreversible sight-loss. This study explored whether the COVID-19 (C19) national lockdown impacted upon the clinical presentation and outcomes of MK at a UK tertiary-care centre. Methods: Medical records were retrospectively reviewed for all patients with presumed MK requiring corneal scrapes, presenting between 23rd March and 30th June in 2020 (Y2020), and the equivalent time windows in 2017, 2018 and 2019 (pre-C19). Results: In total, 181 and 49 patients presented during the pre-C19 and Y2020 periods, respectively. In Y2020, concurrent ocular trauma (16.3% vs. 5.5%, p = 0.030) and immunosuppression use (12.2% vs 1.7%, p = 0.004) were more prevalent. Despite proportionately fewer ward admissions during the pandemic (8.2% vs 32.6%, p<0.001), no differences were observed in baseline demographics; presenting visual acuity (VA; median 0.6 vs 0.6 LogMAR, p = 0.785); ulcer area (4.0 vs 3.0mm2, p = 0.520); or final VA (0.30 vs 0.30 LogMAR, p = 0.990). Whilst the overall rates of culture positivity were similar in Y2020 and pre-C19 (49.0% vs. 54.7%, p = 0.520), there were differences in the cultures isolated, with a lower rate of poly-microbial cultures in Y2020 (8.3% vs. 31.3%, p = 0.022). Conclusions: Patient characteristics, MK severity and final visual outcomes did not appear to be affected in the first UK lockdown, despite fewer patients being admitted for care. Concurrent trauma and systemic immunosuppression use were greater than in previous years. The difference in spectra of isolated organisms may relate to behavioural changes, such as increased hand hygiene.
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The Risks and Benefits of Myopia Control.Purpose: The prevalence of myopia is increasing around the world, stimulating interest in methods to slow its progression. The primary justification for slowing myopia progression is to reduce the risk of vision loss through sight-threatening ocular pathologic features in later life. The article analyzes whether the potential benefits of slowing myopia progression by 1 diopter (D) justify the potential risks associated with treatments. Methods: First, the known risks associated with various methods of myopia control are summarized, with emphasis on contact lens wear. Based on available data, the risk of visual impairment and predicted years of visual impairment are estimated for a range of incidence levels. Next, the increased risk of potentially sight-threatening conditions associated with different levels of myopia are reviewed. Finally, a model of the risk of visual impairment as a function of myopia level is developed, and the years of visual impairment associated with various levels of myopia and the years of visual impairment that could be prevented with achievable levels of myopia control are estimated. Results: Assuming an incidence of microbial keratitis between 1 and 25 per 10 000 patient-years and that 15% of cases result in vision loss leads to the conclusion that between 38 and 945 patients need to be exposed to 5 years of wear to produce 5 years of vision loss. Each additional 1 D of myopia is associated with a 58%, 20%, 21%, and 30% increase in the risk of myopic maculopathy, open-angle glaucoma, posterior subcapsular cataract, and retinal detachment, respectively. The predicted mean years of visual impairment ranges from 4.42 in a person with myopia of -3 D to 9.56 in a person with myopia of -8 D, and a 1-D reduction would lower these by 0.74 and 1.21 years, respectively. Conclusions: The potential benefits of myopia control outweigh the risks: the number needed to treat to prevent 5 years of visual impairment is between 4.1 and 6.8, whereas fewer than 1 in 38 will experience a loss of vision as a result of myopia control. Keywords: Atropine; Contact lenses; Myopia; Myopic maculopathy; Spectacles; Visual impairment.
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Understanding the Journey of Patients With Vernal Keratoconjunctivitis: A Qualitative Study of the Impact on Children and Families.Purpose: To understand the impact of vernal keratoconjunctivitis (VKC), a chronic allergic inflammation of the ocular surface that primarily affects children and young adults, on daily life. Methods: This qualitative study used an interpretative phenomenological analysis approach. Paired interviews with patients and parents were conducted in the participants' homes. Interviews continued until thematic saturation (no new information arising) was obtained. Nine patients and their families were interviewed. The patients were between 5 and 13 years old with disease severity ranging from mild to severe. Results: Several consistent themes emerged from the study, including the significant impact of VKC on schooling and family life. Families of children with VKC experience delays in receiving an accurate diagnosis and a lack of information and emotional support, which led the parents to report living in a constant state of tension about whether they were doing the right thing for their child. Although many children with VKC also have other atopic conditions, there is no cohesive approach to clinical care. Conclusions: VKC poses a significant burden on the lives of patients and their families. Greater awareness among clinicians is essential for early diagnosis and treatment and to prevent potential sight-threatening complications. The chronic nature of VKC necessitates a holistic approach to patient care to address the multiple clinical and emotional needs of the children and their families.[J Pediatr Ophthalmol Strabismus. 2021;58(5):298-303.].
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Why a dedicated section on keratoconus in the European Journal of Ophthalmology?Keratoconus is emerging as a new subspecialty in ophthalmology. The literature is booming with publications on the topic as we have better understanding of the pathophysiology, treatment and prognosis of the disease over the past two decades. Advances in diagnostic tools as well as genuine increase in prevalence have shifted perspective of the disease from being a rare one. Early diagnosis is of public health interest as early treatment arrests progression. With the view to encourage research, increase awareness and to reflect the evolution of knowledge related to keratoconus, the European Journal of Ophthalmology has dedicate a special section on keratoconus in its journal.
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Importance of Anatomical Efficacy for Disease Control in Neovascular AMD: An Expert Opinion.Background: Neovascular age-related macular degeneration (nAMD) presents a significant treatment burden for patients, carers and medical retina services. However, significant debate remains regarding how best to manage nAMD when assessing disease activity by optical coherence tomography (OCT), and particularly the significance of different types of fluid and how the understanding of anatomical efficacy can influence treatment strategies. This article provides opinion on the practical implications of anatomical efficacy and significance of fluid in the management of nAMD and proposes recommendations for healthcare professionals (HCPs) to improve understanding and promote best practice to achieve disease control. Methods: An evidence-based review was performed and an expert panel debate from the Retina Outcomes Group (ROG), a forum of retinal specialists, provided insights and recommendations on the definition, role and practical implications of anatomical efficacy and the significance of fluid at the macula in the management of nAMD. Results: The ROG has developed recommendations for achieving disease control through a zero-tolerance approach to the presence of fluid in nAMD as patients who avoid fluctuations in fluid at the macula have better visual outcomes. Recommendations cover five key areas: service protocol, training, regimen, multidisciplinary teams and engagement. This approach facilitates more standardised protocol-based treatment strategies. Conclusions: Targeting a fluid-free macula and aiming for disease control are essential to improve outcomes. As new therapies and technologies become available, drying the macula and maintaining disease control will become even more achievable. The outlined recommendations aim to promote best practice among HCPs and medical retina services to improve patient outcomes.
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Cochrane corner : artificial intelligence for keratoconusNo abstract available.