Scope of super-resolution in central vision

The British Journal of Ophthalmology
Lars Frisén

Abstract

The term super-resolution refers to computational enhancement of detail in sets of similar images, particularly undersampled images. Undersampling is a key feature of visual disorders associated with neuroretinal matrix damage. It is conceivable that a neurophysiological equivalent of super-resolution might be recruited in these settings. The need for sets of similar images might be satisfied by augmenting retinal image movements. Monocular letter acuity thresholds were measured by computer graphics in normal subjects, with and without controlled test target movements. Various degrees of neuroretinal matrix defects were simulated by superposing stationary masks on the test targets. Static acuity thresholds increased monotonically with increased mask densities. The addition of target movement partially counteracted the threshold increment. The effect was barely measurable at small mask densities and increased monotonically to a gain of approximately two lines on a decimal acuity scale with masks simulating loss of 90% of neural matrix elements. Similar results were obtained from a patient with an acquired neuroretinal matrix defect, attesting to the validity of the mask experiments. Super-normal retinal image movements have subt...Continue Reading

Citations

Jan 22, 2015·Acta Ophthalmologica·Christina Winther, Lars Frisén
Jul 17, 2012·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Lars Frisén
Nov 21, 2019·Journal of Vision·Jonathan A PatrickPaul V McGraw

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

The British Journal of Ophthalmology
Michael Crossland, Gary Rubin
Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie
Lars Frisén, H A Quigley
The British Journal of Ophthalmology
Christina Winther, Lars Frisén
© 2022 Meta ULC. All rights reserved