PMID: 6984101Jan 1, 1982Paper

Color vision defects in pigmentary retinal dystrophy

Japanese Journal of Ophthalmology
O OkajimaM Okamoto

Abstract

Color vision was studied, using the Farnsworth Panel D-15 test, in 72 patients (115 eyes) with primary pigmentary retina dystrophy of autosomal recessive inheritance, and the results were correlated with the visual acuity and visual field. The incidence of color vision defects and the degree of disturbance increased as the visual acuity and the visual field deteriorated. However, even in cases with the visual acuity better than 0.7, type III acquired blue-yellow defect was found in 22% of the cases. This type of color vision defect was also found in 52% of the cases with the visual acuity between 0.4 and 0.6. In the group with the visual acuity of 0.1 or less, total achromatopsia was found in 64% of the cases. The increment thresholds of the blue and green cone mechanisms in the fovea were determined by the two-color threshold technique of Stiles in 12 patients with the visual acuity better than 0.8. The thresholds of the blue cone mechanism (pi 1) and of the green cone mechanism (pi 4) were found to be elevated over the normal values. The increases in the former and the latter thresholds were correlated linearly with the slope of the regression of 0.64. The increase in the threshold of the blue cone mechanism was more pronounc...Continue Reading

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

Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie
M RoyA Schechter
© 2021 Meta ULC. All rights reserved