Results 1 to 10 of about 3,248,315 (198)

Visual function rather than visual acuity [PDF]

The Lancet Global Health, 2021
Ian Murdoch, David Crabb
doaj   +6 more sources

Functional Visual Loss [PDF]

Neurologic Clinics, 2010
Neurologists frequently evaluate patients complaining of vision loss, especially when the patient has been examined by an ophthalmologist who has found no ocular disease. A significant proportion of patients presenting to the neurologist with visual complaints have nonorganic or functional visual loss. Although there are examination techniques that can
Beau B, Bruce, Nancy J, Newman
  +6 more sources

Investigating Determinants and Evaluating Deep Learning Training Approaches for Visual Acuity in Foveal Hypoplasia

Ophthalmology Science, 2023
Purpose: To describe the relationships between foveal structure and visual function in a cohort of individuals with foveal hypoplasia (FH) and to estimate FH grade and visual acuity using a deep learning classifier. Design: Retrospective cohort study and
Volha V. Malechka, MD, Dat Duong, PhD, Keyla D. Bordonada, MD, Amy Turriff, MS, Delphine Blain, MS, MBA, Elizabeth Murphy, PhD, Wendy J. Introne, MD, Bernadette R. Gochuico, MD, David R. Adams, MD, PhD, Wadih M. Zein, MD, Brian P. Brooks, MD, PhD, Laryssa A. Huryn, MD, Benjamin D. Solomon, MD, Robert B. Hufnagel, MD, PhD   +13 more
doaj   +1 more source

Visual acuity assessment of central retinal artery occlusion patients with or without paracentral acute middle maculopathy via OCT-A

BMC Ophthalmology, 2023
Purpose The association between paracentral acute middle maculopathy (PAMM) and visual acuity in patients with central retinal artery occlusion (CRAO) is still unclear.
Hongxia Gong, Bin Wu, Shiyong Xie
doaj   +1 more source

Evolution of focal choroidal excavation in ABCA4-related retinopathy

American Journal of Ophthalmology Case Reports, 2022
Purpose: To report long-term evolution of unilateral focal choroidal excavation in a patient with ABCA4-related retinopathy. Observations: A 51-year-old female with ABCA4-related retinopathy developed a small juxtafoveal defect in Bruch's membrane in a ...
Matthew D. Benson, Carly B. Feldman, Wadih M. Zein   +2 more
doaj   +1 more source

Extraction (DSX) from Erigeron breviscapus modulates outward potassium currents in rat retinal ganglion cells [PDF]

International Journal of Ophthalmology, 2015
AIM: To investigate the effect of DSX, an active component extracted from Erigeron breviscapus, on the voltage-gated outward K+ channel currents in rat retinal ganglion cells (RGCs) by using electrophysiological method, and to explore the possible ...
Shuo Yin, Zhong-Feng Wang, Jun-Guo Duan, Lu Ji, Xue-Jing Lu   +4 more
doaj   +1 more source

Functional regulation of an outer retina hyporeflective band on optical coherence tomography images

Scientific Reports, 2021
Human and animal retinal optical coherence tomography (OCT) images show a hyporeflective band (HB) between the photoreceptor tip and retinal pigment epithelium layers whose mechanisms are unclear.
Shasha Gao, Yichao Li, David Bissig, Ethan D. Cohen, Robert H. Podolsky, Karen Lins Childers, Gregory Vernon, Sonia Chen, Bruce A. Berkowitz, Haohua Qian   +9 more
doaj   +1 more source

Adaptive Scales of Spatial Integration and Response Latencies in a Critically-Balanced Model of the Primary Visual Cortex [PDF]

, 2018
The brain processes visual inputs having structure over a large range of spatial scales. The precise mechanisms or algorithms used by the brain to achieve this feat are largely unknown and an open problem in visual neuroscience.
Hayton, Keith, Magnasco, Marcelo, Moirogiannis, Dimitrios   +2 more
core   +5 more sources

Protocol to generate endothelial cells, pericytes, and fibroblasts in one differentiation round from human-induced pluripotent stem cells

STAR Protocols, 2023
Summary: Here, we present a protocol for differentiating human-induced pluripotent stem cells into three distinct mesodermal cell types: vascular endothelial cells (ECs), pericytes, and fibroblasts.
Tea Soon Park, Rishabh Hirday, Amir Ali, Roba Megersa, Rafael Villasmil, Eric Nguyen, Kapil Bharti   +6 more
doaj   +1 more source

Dysflective cones: Visual function and cone reflectivity in long-term follow-up of acute bilateral foveolitis. [PDF]

, 2017
PURPOSE:Confocal adaptive optics scanning laser ophthalmoscope (AOSLO) images provide a sensitive measure of cone structure. However, the relationship between structural findings of diminished cone reflectivity and visual function is unclear.
Cunningham, Emmett T, Duncan, Jacque L, Foote, Katharina G, Gorin, Michael B, Lujan, Brandon J, Qin, Jia, Ratnam, Kavitha, Roorda, Austin, Tu, Joanna H, Tuten, William S   +9 more
core   +1 more source