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Mechanical behavior of the iris-lens-zonule-ciliary body system.

The mechanical behavior of athe iris-lens-zonule-ciliary body (ILZC) system under intraocular pressure variations, measured with Scan A, is studied on a series of 20 rabbit eyes. The experiments indicate that the ILZC system behaves like a partition between the anterior and vitreous chambers and not like a supporting structural member. The observed behavior is related to previous clinical observations and to the biostructural model of the eye described in a previous paper by the authors.

Small animal model for investigation of subarachnoid hemorrhage and cerebral vasospasm.

A method for induction of subarachnoid hemorrhage (SAH) in a rat model is described. Resolution of the hemorrhage was documented photographically and microscopically at intervals from 1 hr to 8 days. Photographs indicated that most of the hemorrhage was resorbed within 3 days, an observation confirmed microscopically by the amount of red blood cells in the subarachnoid space. Significant cerebral vasospasm was documented within the first 2 days after the induction of hemorrhage with the basilar artery returning to baseline values at an average of 3 days followed by moderate dilatation at 5 to

Rapid detection of changes in the optic disc: stereo-chronoscopy.

Easy detection of temporal variations of tissue configurations within the optic disc or other structures is possible by means of stereoscopy: Stereochronoscopy. Photographic pictures of the papilla are taken from time to time at exactly the same angle; when any two of them are paired and viewed with a stereoscope, temporal form changes immediately show up as stereo effects (Schirmer [2]). Since continuing glaucomatous damage cannot be diagnosed either by visual field defects or by actual c/d ratios but only by their temporal changes, this method may prove of diagnostic value.

The management of deformities of the foot in children with spina bifida.

A simple photographic technique is described which measures the weight-bearing and non-weight-bearing areas of the feet in the standing child. The child stands on a rectangular sheet of thick glass which is set into the floor. Beneath the floor is a cellar, from which the soles of the feet may be observed and photographed. A transparent grid placed over the photographic print enables the weight-bearing and non-weight-bearing areas of the foot to be measured, and thus to express the weight-bearing areas as a percentage of the total area of the sole of the foot. The procedure was used to assess

Sonar measurement of fetal crown-rump length as means of assessing maturity in first trimester of pregnancy.

A method is reported by which the "in utero" crown-rump length of the fetus may be determined by sonar in the first trimester of pregnancy. The accuracy of the technique was assessed by comparing the sonar and the direct postabortum measurements of fetuses in cases of missed abortion. A normal curve of fetal crown-rump length was derived from 214 examinations on 80 patients and by using these values in a further "blind" series it was found possible to predict the maturity of pregnancy to within three days, between the sixth and the 14th weeks of pregnancy.

ACUTE DEFEROXAMINE-INDUCED RETINOPATHY.

PURPOSE: To report a case of acute retinopathy in a 65-year-old woman secondary to the administration of only five subcutaneous infusions of deferoxamine. METHODS: Clinical findings and multimodal imaging (color fundus photography, optical coherence tomography, and fundus autofluorescence) in a patient with acute deferoxamine-induced retinopathy. RESULTS: The patient developed retinal toxicity after only five cycles of standard-dose subcutaneous deferoxamine. Immediate drug discontinuation was recommended, and the patient was re-examined six weeks later with a functional and anatomical impro…

Spontaneous Closure of a Macular Hole Secondary to Paracentral Acute Middle Maculopathy After Vitrectomy for Retinal Detachment.

PURPOSE: To report a case of spontaneous closure of a macular hole secondary to paracentral acute middle maculopathy (PAMM) following vitrectomy for retinal detachment. METHODS: Case report. RESULTS: A 67-year-old female patient with a history of rheumatoid arthritis, hypertension, and peripheral vascular occlusive disease underwent pars plana vitrectomy for retinal detachment. Following surgery, a parafoveal grayish lesion was observed on color fundus photography, and optical coherence tomography revealed a band-like hyperreflective lesion in the inner nuclear layer. A macular hole secondar…

The future of paediatric obstructive sleep apnoea assessment: Integrating artificial intelligence, biomarkers, and more.

Assessing obstructive sleep apnoea (OSA) in children involves various methodologies, including sleep studies, nocturnal oximetry, and clinical evaluations. Previous literature has extensively discussed these traditional methods. Despite this, there is no consensus on the optimal screening method for childhood OSA, further complicated by the complexity and limited availability of diagnostic polysomnography (PSG). Recent advancements, such as the integration of artificial intelligence, biomarkers, 3D facial photography, and wearable technology, offer promising alternatives for early detection an…

Tractional Retinal Detachment in a Patient With a History of Methamphetamine Use.

Purpose: To describe the development of tractional retinal detachments (TRD) in a patient with diabetic retinopathy (DR) and a history of methamphetamine use. Methods: A single case was evaluated. Results: A 38-year-old man with type 2 diabetes mellitus presented to the clinic with worsening blurry vision in both eyes. A fundus examination, fundus photography, and optical coherence tomography were performed. The patient's bilateral TRDs were attributed to poorly controlled DR; thus, he was administered 1 intravitreal aflibercept injection in each eye and scheduled for surgery. His glycosylated…

A green chemical analysis of ethanol using a smart phone.

This research presents a novel method for measuring ethanol concentrations using a smartphone. The method involves an oxidation reaction with potassium dichromate and concentrated sulfuric acid, resulting in a green-blue color formation. The color intensity, corresponding to ethanol concentrations ranging from 0 to 100%, was captured using a smartphone camera within a specialized photography box. The images were then analyzed using a specific application, converting the color signal into an absorbance value. The calibration curve demonstrated excellent linearity in the range of 0-0.55 v/v % an…

Insights into the diagnosis and management of sarcoid uveitis: A review.

Sarcoidosis is a leading cause of non-infectious uveitis that commonly affects middle-aged individuals and has a female preponderance. The disease demonstrates age, sex and ethnic differences in clinical manifestations. A diagnosis of sarcoidosis is made based on a compatible clinical presentation, supporting investigations and histologic evidence of non-caseating granulomas, although biopsy is not always possible. Multimodal imaging with widefield fundus photography, optical coherence tomography and angiography can help in the diagnosis of sarcoid uveitis and in the monitoring of treatment re…

Distribution of Pupil Size and Associated Factors: Results from the Population-Based Gutenberg Health Study.

RESULTS: 18,335 eyes of 9,559 participants aged 40 to 80 years were included in the analysis. Median pupil diameter was 4.19 mm in right eye … diabetes have a smaller pupil. This should be taken into account when planning nonmydriatic fundus photography-based screening programs, for instance, for diabetic retinopathy.

УНИВЕРСАЛЬНАЯ АКУТЕ-ИДИОФАТИЧЕСКАЯ МАКУЛОФАТИЯ В ТРУДЯЩЕЙСЯ БЕДСТВИЮЩЕЙ РАДИОЛОГИИ: СЛУЧАЙНЫЙ ДОКЛАД.

ЦЕЛЬ: продемонстрировать редкую причину острого, фокусного хореорита. МЕТОДЫ: Обзор фондоскопии слизистой лампы, цветной фотографии, спектрально-доменной оптической последовательности томографии и ангиографии флуоресцеина. РЕЗУЛЬТАТЫ: В ходе осмотра световых ламп были выявлены парафовиальные микроаневризмы, внутриреберные кровоизлияния парафовиальных лучей и нарушения внешнего сегмента левого глаза. На фотографиях Fundus было показано кровоизлияние в сетчатку и серого шипа в центральной парафовиальной зоне. Томография оптической согласованности была примечательна для небольшого кармана внешнег

Совпадение в аннотации оригинала
PURPOSE: To demonstrate a rare cause of acute, focal chorioretinitis. METHODS: Review of slit-lamp fundoscopy, color fundus photography, spectral-domain optical coherence tomography, and fluorescein angiography. RESULTS: Slit-lamp examination revealed parafoveal microaneurysms, parafoveal intraretinal hemorrhages, and outer segment irregularity in the left…

Multimodal imaging of type 2 acute macular neuroretinopathy in a young woman.

We report a case of type 2 acute macular neuroretinopathy (AMN) that occurred in an otherwise healthy 22-year-old white woman taking oral contraceptives and consuming large quantities of caffeinated coffee. The patient presented with a teardrop-shaped scotoma just inferior to her central vision in her left eye after a recent and significant increase in coffee consumption. A small extrafoveal retinal lesion was present superior to the fovea on pseudocolor fundus photography. Multimodal retinal imaging demonstrated focal disruption of the inner segment-outer segment junction of the photoreceptor…

Direct patient-to-physician teledermatology: Not a flash in the pan(demic).

Dermatology is a clinical and visual discipline, which makes it the quintessential medical specialty for spot diagnosis and telemedicine. The COVID-19 pandemic has led to an unprecedented worldwide renaissance of teledermatology (TD). It has helped deliver high-quality medical care, while protecting the medical personnel and vulnerable patients from potential infection. Examining a patient from a distance through digital photography has many drawbacks, including lack of physical touch, difficulties in performing full body examinations, and several legal and ethical issues. We summarize have su…