PMID: 9439967Jan 24, 1998Paper

Comparison of line and space bisection in evaluation of normal and amblyopic spatial vision

Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie
S E Graefe, W Haase

Abstract

Partitioning experiments have been used historically and in the recent past to evaluate space perception in visually normal and disturbed individuals. Specifically, amblyopic patients display notably distorted and/or uncertain spatial localization when assessed by either line or space bisection. This investigation was concerned with the comparison of line bisection with space bisection. Normal and amblyopic subjects bisected horizontal lines and spaces extending 1, 2, 3 and 15 deg arc monocularly on a computer screen. Results of the two procedures were compared. Visually normal subjects bisected both lines and spaces without reproducible distortion, within uncertainties approximating 1-3% of their length. No differences were observed between the two procedures. Strabismic amblyopes bisected without constant distortion to either side of the geometrical mean, irrespective of direction or extent of the deviation; their uncertainty at bisecting ranged from 2% to 12%. Again, no distinction between line and space bisection could be made. We conclude that the two procedures yield comparable results.

References

Nov 30, 1978·Pflügers Archiv : European journal of physiology·R F HessT Greenhalgh
Jul 1, 1992·Klinische Monatsblätter für Augenheilkunde·M Fronius, R Sireteanu
Jan 1, 1989·Ultrasound in Medicine & Biology·G KossoffP L Ho
Jan 1, 1987·Vision Research·D M LeviY L Yap
Oct 26, 1973·Science·K Blank, J M Enoch
Jan 1, 1983·Vision Research·D M Levi, S A Klein
Jun 1, 1983·American Journal of Optometry and Physiological Optics·H E Bedell, M C Flom
Aug 1, 1958·The British Journal of Ophthalmology·M PUGH
Apr 1, 1962·The British Journal of Ophthalmology·M Pugh

❮ 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

Journal of Neurology, Neurosurgery, and Psychiatry
V W Mark, Kenneth M Heilman
Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
P Lempert, L Porter
© 2021 Meta ULC. All rights reserved