Results 71 to 80 of about 22,871 (209)

Understanding and caring for an indirect ophthalmoscope

Community Eye Health Journal, 2017
The binocular indirect ophthalmoscope, or indirect ophthalmoscope, is an optical instrument worn on the examiner’s head, and sometimes attached to spectacles, that is used to inspect the fundus or back of the eye.
Ismael Cordero
doaj  

Repeatability of \u3cem\u3eIn Vivo\u3c/em\u3e Parafoveal Cone Density and Spacing Measurements [PDF]

, 2012
Purpose. To assess the repeatability and measurement error associated with cone density and nearest neighbor distance (NND) estimates in images of the parafoveal cone mosaic obtained with an adaptive optics scanning light ophthalmoscope (AOSLO).Methods ...
Carroll, Joseph, Cooper, Robert F., Dubis, Adam M., Dubra, Alfredo, Garrioch, Robert, Langlo, Christopher S.   +5 more
core   +1 more source

Population‐Based Cohort Study for Development of National Retinopathy of Prematurity Screening Criteria

Acta Paediatrica, Volume 115, Issue 3, Page 671-678, March 2026.
ABSTRACT Aim Screening criteria for retinopathy of prematurity (ROP) vary among countries. Early detection of ROP and minimising the burden of screening are important. Methods We analysed data from very preterm infants born in Switzerland between 2006 and 2022.
R. Gerull, C. Sanchez, A. Atkinson, M. Schuler‐Barazzoni, M. Adams, F. Barcos Munoz, C. Gerth‐Kahlert, S. M. Schulzke, on behalf of the Swiss Neonatal Network, Ph. Meyer, L. Eisenhut, M. Bryant, A. Kidszun, T. Riedel, M. Gebauer, B. Rogdo, B. Wagner, R. E. Pfister, J.‐F. Tolsa, J. Schneider, M. Stocker, P. Gessler, B. Laubscher, J. Llor, A. Malzacher, A. Birkenmaier, L. Hegi, V. Bernet, M. Tomaske, D. Bassler, V. Cannizzaro, C. Hagmann   +31 more
wiley   +1 more source

Optical coherence tomography and scanning laser ophthalmoscopy: Approaches to dual-channel retinal tissue imaging [PDF]

, 2014
We report a Talbot bands-based optical coherence tomography (OCT) system capable of producing longitudinal B-scan OCT images and en-face scanning laser ophthalmoscopy (SLO) images of the human retina in-vivo, with various degrees of ...
Marques, Podoleanu, Potsaid, Wojtkowski
core   +1 more source

From Aid Dependency to Self‐Reliance: Lessons From Sierra Leone and Rwanda's Strategies for Eliminating Preventable Blindness in Africa: A Perspective Study

Health Science Reports, Volume 9, Issue 2, February 2026.
ABSTRACT Background and Aims Preventable blindness remains a leading cause of disability in low‐income countries (LICs), with 91.5% of cases in Sierra Leone and 83.9% in Rwanda considered avoidable. Reliance on foreign aid has supported eye care development in Africa, yet has also fostered systemic dependency.
Babatunde Ismail Bale, Lynette Delali Amematekpor, Ebunoluwa Anne Ajibola‐Ajo, Seriki Yetunde Mutiat, Ojo Onakhe Emmanuel, Adeleke Oluwatimilehin   +5 more
wiley   +1 more source

Outer Retinal Structure in Best Vitelliform Macular Dystrophy [PDF]

, 2013
Importance Demonstrating the utility of adaptive optics scanning light ophthalmoscopy (AOSLO) to assess outer retinal structure in Best vitelliform macular dystrophy (BVMD).
Carroll, Joseph, Cooper, Robert F., Dubis, Adam M., Dubra, Alfredo, Godara, Pooja, Kay, David B., Land, Megan E., Stepien, Kimberly E.   +7 more
core   +3 more sources

Properly Speaking, Sir Isaac Newton Was the First Perceptual Psychologist and, Therefore, the First Psychologist

Color Research &Application, Volume 51, Issue 1, January/February 2026.
Newton’s insight that “the rays are not colored” anticipated a constructivist view of perception in which physical stimuli provide input but perceptual qualities arise from neural processing. Framed by Newton’s view, early sensory psychology and modern neuroscience converged on the conclusion that color is an internally generated percept, shaped by ...
Billy R. Wooten, Billy R. Hammond
wiley   +1 more source

Retinal Architecture in ​\u3cem\u3eRGS9-\u3c/em\u3e and ​\u3cem\u3eR9AP\u3c/em\u3e-Associated Retinal Dysfunction (Bradyopsia) [PDF]

, 2015
Purpose To characterize photoreceptor structure and mosaic integrity in subjects with RGS9- and R9AP-associated retinal dysfunction (bradyopsia) and compare to previous observations in other cone dysfunction disorders such as oligocone trichromacy ...
Ba-Abbad, Rola, Carroll, Joseph, Cooper, Robert F., Dubis, Adam M., Dubra, Alfredo, Michaelides, Michel, Moore, Anthony T., Strauss, Rupert W., Webster, Andrew R.   +8 more
core   +1 more source

Automated Diagnosis of Hypertensive Retinopathy Using Res‐UNet and Graph Convolutional Networks

Healthcare Technology Letters, Volume 13, Issue 1, January/December 2026.
The proposed framework integrates retinal vessel segmentation and artery/vein classification using deep residual UNET and GCN models for hypertensive retinopathy diagnosis. By computing the arteriovenous ratio, the method accurately detects HR stages from retinal fundus images. The system achieves reliable performance using the DRIVE dataset.
Esra'a Mahmoud Jamil AL Sariera
wiley   +1 more source

Evaluating medical students’ proficiency with a handheld ophthalmoscope: a pilot study

Advances in Medical Education and Practice, 2016
Gregory Gilmour,1 James McKivigan2 1Physical Medicine and Rehabilitation, Michigan State University, Lansing, MI, 2School of Physical Therapy, Touro University, Henderson, NV, USA Introduction: Historically, testing medical students’ skills using a
Gilmour G, McKivigan J
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