Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Two Eyes Are Better Than One-Binocular Summation of Dark Vision in Healthy Individuals and Patients with Chronic Respiratory Disease

Thylefors, Joakim LU orcid and Havelius, Ulf LU (2014) In Neuro-Ophthalmology 38(3). p.113-121
Abstract

We compared monocular and binocular absolute thresholds of dark adaptation in two separate study populations. Eighteen healthy individuals (Group A) and 13 patients with chronic respiratory insufficiency (Group B) were examined three times each by computerised dark adaptometry with simultaneous but separate recordings from each eye and binocularly. The respiratory patients received oxygen supplement at visits 1 and 3. In Group A, at all three visits, binocular dark adaptation was significantly more sensitive (40.5%) than monocular dark adaptation with either eye. In Group B, at visits 1 and 3, binocular dark adaptation was also significantly more sensitive than monocular dark adaptation (40.5% higher than the right and 47% higher than... (More)

We compared monocular and binocular absolute thresholds of dark adaptation in two separate study populations. Eighteen healthy individuals (Group A) and 13 patients with chronic respiratory insufficiency (Group B) were examined three times each by computerised dark adaptometry with simultaneous but separate recordings from each eye and binocularly. The respiratory patients received oxygen supplement at visits 1 and 3. In Group A, at all three visits, binocular dark adaptation was significantly more sensitive (40.5%) than monocular dark adaptation with either eye. In Group B, at visits 1 and 3, binocular dark adaptation was also significantly more sensitive than monocular dark adaptation (40.5% higher than the right and 47% higher than the left eye). However, in Group B, at visit 2 without oxygen treatment, no significant differences were observed between monocular and binocular sensitivities. Binocular dark vision was superior to monocular dark vision in healthy individuals and in patients with respiratory insufficiency that were provided oxygen supplementation. Furthermore, deficit in oxygen seems to affect binocular summation, perhaps by impaired enhancement in the central nervous system.

(Less)
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Neuro-Ophthalmology
volume
38
issue
3
pages
113 - 121
publisher
Taylor & Francis
external identifiers
  • pmid:27928285
  • scopus:84900526906
ISSN
0165-8107
DOI
10.3109/01658107.2013.879599
language
English
LU publication?
yes
id
b6766621-574b-43ae-97d0-7ccbdaea15f5
date added to LUP
2021-11-18 10:17:59
date last changed
2024-01-05 20:36:00
@article{b6766621-574b-43ae-97d0-7ccbdaea15f5,
  abstract     = {{<p>We compared monocular and binocular absolute thresholds of dark adaptation in two separate study populations. Eighteen healthy individuals (Group A) and 13 patients with chronic respiratory insufficiency (Group B) were examined three times each by computerised dark adaptometry with simultaneous but separate recordings from each eye and binocularly. The respiratory patients received oxygen supplement at visits 1 and 3. In Group A, at all three visits, binocular dark adaptation was significantly more sensitive (40.5%) than monocular dark adaptation with either eye. In Group B, at visits 1 and 3, binocular dark adaptation was also significantly more sensitive than monocular dark adaptation (40.5% higher than the right and 47% higher than the left eye). However, in Group B, at visit 2 without oxygen treatment, no significant differences were observed between monocular and binocular sensitivities. Binocular dark vision was superior to monocular dark vision in healthy individuals and in patients with respiratory insufficiency that were provided oxygen supplementation. Furthermore, deficit in oxygen seems to affect binocular summation, perhaps by impaired enhancement in the central nervous system.</p>}},
  author       = {{Thylefors, Joakim and Havelius, Ulf}},
  issn         = {{0165-8107}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{113--121}},
  publisher    = {{Taylor & Francis}},
  series       = {{Neuro-Ophthalmology}},
  title        = {{Two Eyes Are Better Than One-Binocular Summation of Dark Vision in Healthy Individuals and Patients with Chronic Respiratory Disease}},
  url          = {{http://dx.doi.org/10.3109/01658107.2013.879599}},
  doi          = {{10.3109/01658107.2013.879599}},
  volume       = {{38}},
  year         = {{2014}},
}