Результаты поиска

Assessing spectral effectiveness in color fundus photography for deep learning classification of retinopathy of prematurity.

SIGNIFICANCE: Retinopathy of prematurity (ROP) poses a significant global threat to childhood vision, necessitating effective screening strategies. This study addresses the impact of color channels in fundus imaging on ROP diagnosis, emphasizing the efficacy and safety of utilizing longer wavelengths, such as red or green for enhanced depth information and improved diagnostic capabilities. AIM: This study aims to assess the spectral effectiveness in color fundus photography for the deep learning classification of ROP. APPROACH: A convolutional neural network end-to-end classifier was utilize…

Точность, приемлемость и осуществимость фотографии для использования в обследованиях трахомы: исследование по смешанным методам в Танзании.

Фотография могла бы использоваться для обучения людей диагностике трахоматного воспаления - фолликулярного (ТФ) по мере снижения распространенности трахомы и для обеспечения точной классификации ЦГ на местах при проведении обследований распространения трахомы. Мы сравнили фотографию и сортировку ЦГ на местах и определили приемлемость и осуществимость фотографирования с веками для членов общин и инструкторов по изучению трахомы. В общей сложности 100 детей в возрасте 1-9 лет были обследованы в двух селах Маасаи в Танзании. С помощью смартфона и цифровой фотоаппарат с однополосным рефлексом (DSL

Совпадение в аннотации оригинала
BACKGROUND: Photography could be used to train individuals to diagnose trachomatous inflammation-follicular (TF) as trachoma prevalence decreases and to ensure accurate field TF grading in trachoma prevalence surveys. We compared photograph and field TF grading and determined the acceptability and feasibility of eyelid photography to community members and tr…

Differential distribution of manifest lesions in diabetic retinopathy by fundus fluorescein angiography and fundus photography.

BACKGROUND: To analyze the distribution of manifest lesions of diabetic retinopathy (DR) by fundus fluorescein angiography (FFA) and color fundus photography (FP). METHODS: A total of 566 eyes of 324 Chinese patients diagnosed with DR were included in this retrospective study. DR severity was graded by the international grading criterion. The distributions of microaneurysms (MA), intraretinal hemorrhages/exudates (He/Ex), intraretinal microvascular abnormality (IRMA), capillary nonperfusion areas (NPA), and neovascularization (NV) were estimated by multiple logistic regression analyse based o…

Orbital MRI versus fundus photography in the diagnosis of optic nerve hypoplasia and prediction of vision.

INTRODUCTION: In patients with optic nerve hypoplasia (ONH), the visualisation of the optic disc can be challenging and the definitive diagnosis difficult to ascertain without fundus photography. The use of MRI for diagnosis has been reported as a diagnostic alternative with conflicting results. We retrospectively analysed a disease registry to determine the reliability of orbital MRI measurements of the optic nerve diameter to diagnose ONH, and the correlation with vision outcomes. MATERIALS AND METHODS: From a cohort of 140 patients with ONH (13% unilateral) that had reached age 5 years, we…

Smartphone photography as a possible method of post-validation trachoma surveillance in resource-limited settings.

BACKGROUND: Validation of trachoma elimination requires monitoring after discontinuation of trachoma program activities, though such evaluations are not commonly done. METHODS: Conjunctival examinations and smartphone photography were performed on a random sample of pre-school children from 15 villages in a region of Burkina Faso thought to have eliminated trachoma. RESULTS: No clinically active trachoma was detected by in-field or photographic evaluation. Smartphone images demonstrated high agreement with field grading (>99% concordance). CONCLUSIONS: Trachoma appears to have been eliminat…

RGB Measurements From Endoscopic Photography as a New and Objective Diagnostic Method for Chronic Tonsillitis.

PURPOSE: This study assessed the diagnostic role of a digital photographic assessment of chronic tonsillitis. This study was performed at a tertiary referral center. METHODS: Three cohorts of children were studied based on their diagnoses: current chronic tonsillitis (before tonsillectomy), previous chronic tonsillitis (3 months after tonsillectomy), and healthy children (control group). Oropharyngeal regions of all subjects were examined and photographed endoscopically. Red/green/blue (RGB) values of particular oropharyngeal points were then measured. FINDINGS: The current chronic tonsillit

[Schleimpflug photography detects alterations in corneal density and thickness in patients with dry eye disease].

BACKGROUND: Dry eye disease is a common ocular surface disease that significantly affects the quality of life. Little is known about a potential impact of the disease on corneal morphology. This study was carried out to investigate for the first time if dry eye disease induces changes in corneal density and thickness. METHODS: In total 97 patients suffering from dry eye disease and 33 healthy age-matched individuals were included in this prospective, randomized study. Corneal morphology was documented with Scheimpflug photography and analyzed for central corneal thickness and corneal density …

Medical photography: a reliable and objective method for documenting the results of reconstructive surgery of pectus excavatum.

Patients with a pectus excavatum frequently experience medical problems such as dyspnoea, fatigue and palpitations. After surgical intervention most patients are alleviated of their symptoms. Pectus excavatum can easily be diagnosed by a proper inspection of the chest. In the Atrium Medical Center photographic documentation of the deformation of the chest is part of the treatment protocol before and after surgical correction of a pectus excavatum. In addition to the normal photographic routine two special recording techniques are applied: measuring the depth of the excavation with a rule, and

Standardized Clinical Photography for Improving Dermatological Treatment Adherence (Scoping Review): Evidence Landscape and Research Gaps.

Treatment adherence remains suboptimal across chronic dermatological conditions, contributing to poor clinical outcomes and increased healthcare burden. Despite the established role of standardized clinical photography in clinical documentation, its specific application as an adherence-promoting intervention remains poorly characterized. This scoping review aimed to systematically map the literature on photographic feedback in dermatology, identify research gaps, and propose methodological recommendations for future randomized controlled trials (RCTs). We conducted a scoping review according t…

Three dimensional total body photography identifies cutaneous phenotypes associated with late-onset invasive melanoma risk.

BACKGROUND: High naevus counts and ultraviolet photodamage are strong risk factors for melanoma. However, whole-of-body measures fail to capture variability across body sites. Three-dimensional total body photography (3D-TBP) and artificial intelligence (AI) allow us the opportunity to automate the extraction of site-specific distributions of naevi and photodamage. OBJECTIVES: To identify distinct phenotypic patterns associated with melanoma in a cohort of people at high risk of advanced melanoma, using combined 3D-TBP, AI and unsupervised clustering. METHODS: Participants with a history of …

Comparison of basal diameters in choroidal melanoma using ultra-widefield color fundus photography and ultrasonography.

OBJECTIVE: For diagnosis and monitoring of ocular neoplastic lesions, ultrasonography (US) measurements are pivotal. Using color fundus photographs rather than US may allow follow-up with an ophthalmologist close to patients' home and may reduce the need of patients to travel to specialized ocular-oncological centers. This study aims to compare measurements of choroidal melanoma (CM) diameters in ultra-widefield color fundus images (UWF-CF) to measurements based on US. PATIENTS AND METHODS: In this comparative retrospective study patients with CM and available US and UWF-CF were included. Sta

Combined diagnostic accuracy of two artificial intelligence systems for glaucoma diagnosis using color fundus photography.

PURPOSE: To evaluate the diagnostic accuracy of two commercially available artificial intelligence (AI) systems based on color fundus photography (CFP), the Laguna ONhE and VUNO Med-Fundus AI, for glaucoma detection, both independently and in combination. METHODS: This retrospective cross-sectional study included 370 eyes from 193 patients (248 eyes with primary open-angle glaucoma and 122 healthy eyes). All eyes underwent structural evaluation with swept-source optical coherence tomography (Triton, Topcon) and visual field testing (Octopus 900, Haag-Streit AG). Fundus photographs were analyz…

Color Stability of Ocular Prostheses Subjected to Short-Term Tropical Weathering: A Digital Photography Analysis.

Background and objective Discoloration of ocular prostheses occurs unpredictably and can reduce their functional service life. Ensuring color stability is essential for maintaining long-term aesthetics and clinical performance. This study evaluated the color stability of acrylic ocular prostheses following short-term outdoor weathering using digital image analysis. A secondary aim was to quantify color changes within the weather-exposed group using digital photography with white balance calibration. Materials and methods Thirty custom acrylic ocular prostheses were fabricated and allocated to …

Sensitivity of ultra-widefield fundus photography for retinal break localisation in primary rhegmatogenous retinal detachment.

BACKGROUND/OBJECTIVES: To determine the sensitivity of ultra-widefield imaging (UWFI) for detecting retinal breaks in primary rhegmatogenous retinal detachment (RRD) and to evaluate its utility for preoperative localisation. SUBJECTS/METHODS: We included adults with primary RRD who underwent PPV and had preoperative UWFI. Intraoperative scleral indentation served as reference standard. Breaks were classified by morphology and by a fovea-centred, right-eye standardised clock-hour system. The primary outcome was causative-break detection on UWFI and quadrant-level sensitivities were secondary.

"Mending fractured personalities": A photography-based cultural study of recovery from mental distress in Romania.

This study explored the lived experiences and meanings of recovery from mental distress from the perspective of mental health service users … day centre in Romania. The phenomenological background was enriched with elements of participatory photography to elicit subjective experiences and meanings of recovery. The outcome of this study was a better understanding of recovery in Romanian adults living with mental distress, as a complex and multi-layered phenomenon. Three key themes were identified t …

Machine learning predicting myopic regression after corneal refractive surgery using preoperative data and fundus photography.

PURPOSE: Myopic regression after surgery is the most common long-term complication of refractive surgery, but it is difficult to identify myopic regression without long-term observation. This study aimed to develop machine learning models to identify high-risk patients for refractive regression based on preoperative data and fundus photography. METHODS: This retrospective study assigned subjects to the training (n = 1606 eyes) and validation (n = 403 eyes) datasets with chronological data splitting. Machine learning models with ResNet50 (for image analysis) and XGBoost (for integration of all…

Wound photography for evaluation of surgical site infection and wound healing after lower limb trauma.

AIMS: Deep surgical site infection (SSI) is common after lower limb fracture. We compared the diagnosis of deep SSI using alternative methods of data collection and examined the agreement of clinical photography and in-person clinical assessment by the Centers for Disease Control and Prevention (CDC) criteria after lower limb fracture surgery. METHODS: Data from two large, UK-based multicentre randomized controlled major trauma trials investigating SSI and wound healing after surgical repair of open lower limb fractures that could not be primarily closed (UK WOLLF), and surgical incisions for…