Results 1 to 10 of about 24,505 (227)

Nyctalopia Due to Vitamin A Deficiency Secondary to Short Bowel Syndrome: When the Electroretinogram Is the Diagnostic Key [PDF]

Brain Sciences
Background: Vitamin A deficiency (VAD) can occur due to malnutrition or reduced intestinal absorption, such as in short bowel syndrome (SBS). The main causes of SBS in adults include post-radiotherapy and surgery (e.g., repeated bowel resections).
Moisés León-Ruiz, Julián Benito-León, Carlos Castañeda-Cabrero   +2 more
doaj   +2 more sources

Photoreceptor changes in Leber hereditary optic neuropathy with m.G11778A mutation [PDF]

International Journal of Ophthalmology, 2023
AIM: To evaluate the functional and structural changes of photoreceptors in patients and asymptomatic carriers with Leber hereditary optic neuropathy (LHON) using full-field electroretinography (FERG) and optical coherence tomography (OCT).
Qing-Mei Miao, Yu-Fang Cheng, Hong-Mei Zheng, Jia-Jia Yuan, Chang-Zheng Chen   +4 more
doaj   +1 more source

Evaluation of the effectiveness of the decision support algorithm for physicians in retinal dystrophy using machine learning methods

Компьютерная оптика, 2023
Electroretinography is a method of electrophysiological testing, which allows diagnosing diseases associated with disorders of the vascular structures of the retina. The classical analysis of the electroretinogram is based on assessing four parameters of
A.E. Zhdanov, A.Yu. Dolganov, D. Zanca, V.I. Borisov, E. Luchian, L.G. Dorosinsky   +5 more
doaj   +1 more source

OculusGraphy: Signal Analysis of the Electroretinogram in a Rabbit Model of Endophthalmitis Using Discrete and Continuous Wavelet Transforms

Bioengineering, 2023
Background: The electroretinogram is a clinical test used to assess the function of the photoreceptors and retinal circuits of various cells in the eye, with the recorded waveform being the result of the summated response of neural generators across the ...
Aleksei Zhdanov, Paul Constable, Sultan Mohammad Manjur, Anton Dolganov, Hugo F. Posada-Quintero, Aleksander Lizunov   +5 more
doaj   +1 more source

Discrete Wavelet Transform Analysis of the Electroretinogram in Autism Spectrum Disorder and Attention Deficit Hyperactivity Disorder

Frontiers in Neuroscience, 2022
BackgroundTo evaluate the electroretinogram waveform in autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD) using a discrete wavelet transform (DWT) approach.MethodsA total of 55 ASD, 15 ADHD and 156 control individuals ...
Paul A. Constable, Fernando Marmolejo-Ramos, Mercedes Gauthier, Irene O. Lee, David H. Skuse, Dorothy A. Thompson, Dorothy A. Thompson   +6 more
doaj   +1 more source

The Effect of Aging on Retinal Function and Retinal Ganglion Cell Morphology Following Intraocular Pressure Elevation

Frontiers in Aging Neuroscience, 2022
Aging and elevated intraocular pressure (IOP) are two major risk factors for glaucomatous optic neuropathy; a condition characterized by the selective, progressive injury, and subsequent loss of retinal ganglion cells (RGCs). We examined how age modified
Pei Ying Lee, Da Zhao, Vickie H. Y. Wong, Vicki Chrysostomou, Vicki Chrysostomou, Jonathan G. Crowston, Jonathan G. Crowston, Bang V. Bui   +7 more
doaj   +1 more source

Electroretinography and Gene Expression Measures Implicate Phototransduction and Metabolic Shifts in Chick Myopia and Hyperopia Models

Life, 2021
The Retinal Ion-Driven Fluid Efflux (RIDE) model theorizes that phototransduction-driven changes in trans-retinal ion and fluid transport underlie the development of myopia (short-sightedness).
Nina Riddell, Melanie J. Murphy, Sheila G. Crewther   +2 more
doaj   +1 more source

The pattern electroretinogram [PDF]

Eye, 1988
Physiological experiments and the exploitation of clinical conditions have provided compelling evidence that retinal ganglion cells and other inner retinal structures generate the pattern ERG (PERG). As an increasing number of clinical reports have been published some contradictory findings have been reported.
T A, Berninger, G B, Arden
openaire   +2 more sources

Cancer-associated retinopathy 4 years after surgery for ovarian cancer

Oman Journal of Ophthalmology, 2021
A 71-year-old woman presented with progressive, bilateral, blurred vision and nyctalopia for the last 6 months. Her past medical history included total hysterectomy and chemotherapy for ovarian cancer 4 years ago, without metastases.
Eleni Dimitriou, Alexandros Chatzirallis, Sokratis Katopodis, George Theodossiadis, Panagiotis Theodossiadis, Irini Chatziralli   +5 more
doaj   +1 more source

Effectiveness of selenium on acrylamide toxicity to retina [PDF]

International Journal of Ophthalmology, 2014
AIM: To investigate the hematological parameters, biochemical and electrophysiological role of acrylamide (ACR) in the retina and to assess whether selenium (Se) has protective potential in experimental oral intoxication with ACR.METHODS: Sixty Wistar ...
Mervat Ahmed Ali, Eman Mohamed Aly, Amal Ibrahim Elawady   +2 more
doaj   +1 more source